HK40009399B - Antenna module and electronic equipment - Google Patents

Description

Antenna module and electronic equipment

Technical Field

The application relates to the technical field of antennas, in particular to an antenna module and electronic equipment.

Background

With the development of wireless communication technology, 5G network technology has emerged. The 5G network, as a fifth generation mobile communication network, has a peak theoretical transmission speed of several tens of Gb per second, which is hundreds of times faster than the transmission speed of the 4G network. Therefore, the millimeter wave band having sufficient spectrum resources becomes one of the operating bands of the 5G communication system.

Lid behind metal center cooperation 3D glass or lid behind metal center cooperation pottery, perhaps full 3D glass, full pottery is the mainstream scheme in the design of future comprehensive screen cell-phone structure, can provide better protection, pleasing to the eye degree, thermal diffusion, colour saturation and user experience. However, due to the high dielectric constant of the 3D glass and ceramic back covers, the radiation performance of the millimeter wave antenna is seriously affected, and the antenna array gain is reduced.

Disclosure of Invention

The embodiment of the application provides an antenna module and electronic equipment, can increase the gain of antenna module, improve radiation efficiency.

An antenna module, comprising:

a feed layer;

the grounding layer is positioned on the feed layer and is provided with a first gap and a second gap which are separated and orthogonally arranged in the polarization direction;

the dielectric substrate is positioned on the grounding layer;

the laminated antenna comprises a first radiation patch and a second radiation patch which are arranged corresponding to the first gap and the second gap, wherein the first radiation patch and the second radiation patch are respectively positioned on two sides of the dielectric substrate which are arranged in a back-to-back manner, and the first radiation patch is orthographically projected on the second radiation patch; wherein the content of the first and second substances,

the feeding layer feeds the laminated antenna through the first gap and the second gap so that the first radiating patch generates resonance of a first frequency band and the second radiating patch generates resonance of a second frequency band.

In addition, an electronic device is also provided, comprising

A feed layer;

the grounding layer is positioned on the feed layer and is provided with a first gap and a second gap which are separated and orthogonally arranged in the polarization direction;

the nonmetal rear cover is arranged corresponding to the grounding layer;

the laminated antenna comprises a first radiation patch and a second radiation patch which are arranged corresponding to the first gap and the second gap, wherein the first radiation patch and the second radiation patch are arranged in a back-to-back manner and are positioned in different areas of the rear cover; wherein the content of the first and second substances,

the feeding layer feeds the laminated antenna through the first gap and the second gap so that the first radiating patch generates resonance of a first frequency band and the second radiating patch generates resonance of a second frequency band. .

Above-mentioned antenna module and electronic equipment includes: a feed layer; the grounding layer is positioned on the feed layer and is provided with a first gap and a second gap which are separated and orthogonally arranged in the polarization direction; the dielectric substrate is positioned on the grounding layer; the laminated antenna comprises a first radiation patch and a second radiation patch which are arranged corresponding to the first gap and the second gap, wherein the first radiation patch and the second radiation patch are respectively positioned on two sides of the dielectric substrate which are arranged in a back-to-back manner, and the orthographic projection of the first radiation patch is on the second radiation patch; the feed layer feeds the laminated antenna through the first gap and the second gap so that the first radiation patch generates resonance of a first frequency band and the second radiation patch generates resonance of a second frequency band, and high gain is kept in a millimeter wave full frequency band specified by 3 GPP. Meanwhile, the laminated antenna is fed in a double-slit polarization direction orthogonal coupling mode, so that the impedance bandwidth of the antenna module can cover the millimeter wave full-band requirement specified by 3GPP, and full-band, dual-polarization, high-efficiency and high-gain antenna radiation is realized.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a perspective view of an electronic device in one embodiment;

FIG. 2 is a cross-sectional view of an antenna module according to an embodiment;

fig. 3a is a schematic view of a first radiation patch and a second radiation patch in an embodiment;

fig. 3b is a schematic view of a first and a second radiation patch in another embodiment;

FIG. 4a is a schematic structural diagram of a dual slot and feed unit in one embodiment;

FIG. 4b is a schematic structural diagram of a dual slot and feeding unit in another embodiment;

FIG. 5 is a cross-sectional view of an antenna module according to another embodiment;

FIG. 6 is a cross-sectional view of an antenna module according to yet another embodiment;

FIG. 7 is a cross-sectional view of an antenna module according to yet another embodiment;

FIG. 8 is a cross-sectional view of an electronic device in one embodiment;

FIG. 9 is a diagram illustrating reflection coefficients of an antenna module according to an embodiment;

FIG. 10a is a diagram illustrating the antenna efficiency of the antenna module at 28GHz band in an embodiment;

FIG. 10b is a schematic diagram illustrating the antenna efficiency of the antenna module at 39GHz band in one embodiment;

FIG. 11a is a gain diagram of the antenna module with 0 ° phase shift in the 28GHz band under X polarization according to an embodiment;

FIG. 11b is a gain diagram of the antenna module with 0 ° phase shift in the 39GHz band under X polarization in accordance with an embodiment;

FIG. 11c is a gain diagram of the antenna module with a phase shift of 0 ° in the Y polarization at 28GHz in one embodiment;

FIG. 11d is a gain diagram illustrating the phase shift of the antenna module at 0 ° in the Y polarization and at 39 GHz;

FIG. 12a is a diagram illustrating the 0 orientation of the antenna module in the 28GHz band under X polarization in accordance with one embodiment;

FIG. 12b is a diagram of an embodiment of an antenna module showing a 0 orientation for X polarization in the 39GHz band;

FIG. 12c is a diagram of an embodiment of an antenna module with a 0 orientation in the Y polarization at 28 GHz;

FIG. 12d is a diagram of an embodiment of an antenna module showing a 0 orientation for Y polarization in the 39GHz band;

fig. 13 is a block diagram of a partial structure of a mobile phone related to an electronic device provided in an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

The antenna module of this application embodiment is applied to electronic equipment, and in an embodiment, electronic equipment can be for including cell-phone, panel computer, notebook computer, palmtop computer, Mobile Internet Device (MID), wearable equipment (for example smart watch, intelligent bracelet, pedometer etc.) or other communication module that can set up array antenna module.

As shown in fig. 1, in an embodiment of the present application, the electronic device 10 may include a housing assembly 110, a substrate 120, a display screen assembly 130, and a controller. The display screen assembly 130 is fixed to the housing assembly 110, and forms an external structure of the electronic device together with the housing assembly 110. The housing assembly 110 may include a middle frame 111 and a rear cover 113. The middle frame 111 may be a frame structure having a through hole. The middle frame 111 can be accommodated in an accommodating space formed by the display screen assembly and the rear cover 113. The rear cover 113 is used to form an outer contour of the electronic apparatus. The rear cover 113 may be integrally formed. In the forming process of the rear cover 113, structures such as a rear camera hole, a fingerprint recognition module, an antenna module mounting hole, etc. may be formed on the rear cover 113. The rear cover 113 is a non-metal rear cover 113, for example, the rear cover 113 may be a plastic rear cover 113, a ceramic rear cover 113, a 3D glass rear cover 113, or the like. The substrate 120 is fixed inside the housing assembly, and the substrate 120 may be a PCB (Printed Circuit Board) or an FPC (Flexible Printed Circuit). An antenna module for transmitting and receiving millimeter wave signals may be integrated with the rear cover 113, and a controller or the like capable of controlling the operation of the electronic device may be integrated with the rear cover. The display screen component can be used for displaying pictures or fonts and can provide an operation interface for a user.

As shown in fig. 1, in an embodiment, the housing assembly 110 integrates an antenna module 210, and a beam of the antenna module 210 is directed to the outside of the rear cover 113, so that a millimeter wave signal can be transmitted and received through the rear cover 113, thereby enabling the electronic device to achieve wide coverage of the millimeter wave signal.

As shown in fig. 2, an embodiment of the present application provides an antenna module, which includes: the antenna comprises a feed layer 210, a ground layer 220 provided with a first slit 221 and a second slit 223 which are separated from each other and have orthogonal polarization directions, a laminated antenna 230 provided with a first radiation patch 231 and a second radiation patch 233, and a dielectric substrate 240.

In an embodiment, the feeding layer 210 includes a feeding substrate 211, and a first feeding unit 213 and a second feeding unit 215 disposed on the feeding substrate 211, and feeding polarization directions of the first feeding unit 213 and the second feeding unit 215 are different. The feeding substrate 211 includes a first surface and a second surface opposite to each other. Note that the first surface is a surface facing away from the ground layer 220, and the second surface is a surface facing the ground layer 220. Wherein the first feeding unit 213 and the second feeding unit 215 are both disposed on the first surface.

In an embodiment, the first power feeding unit 213 and the second power feeding unit 215 each include a power feeding trace. Here, the first feeding unit 213 may be understood as a vertical polarization feeding trace, and the second feeding unit 215 may be understood as a horizontal polarization feeding trace. Alternatively, the first feeding unit 213 may also be understood as a horizontally polarized feeding trace, and the second feeding unit 215 may be understood as a vertically polarized feeding trace.

The routing direction of the feed unit is the extending direction of the feed routing. Specifically, the feed line is a strip line, so that the impedance is easy to control, and meanwhile, the shielding is good, the loss of electromagnetic energy can be effectively reduced, and the antenna efficiency is improved.

The ground layer 220 is disposed on the feeding substrate 211 and on a side away from the first feeding unit 213 or the second feeding unit 215, and has a first slot 221 and a second slot 223 separated and orthogonally polarized. That is, the ground layer 220 is located on the second surface of the feeding substrate 211.

Specifically, the first slot 221 is disposed separately from the second slot 223, wherein the first slot 221 is disposed corresponding to the first feeding unit 213, and the second slot 223 is disposed corresponding to the second feeding unit 215. Specifically, the area of the first power feeding unit 213 orthographically projected on the ground plane 220 may entirely cover the area of the first slot 221. The area of the second power feeding unit 215 orthographically projected on the ground plane 220 may entirely cover the area where the second slot 223 is located.

The slit direction of the first slit 221 and the slit direction of the second slit 223 are perpendicular to each other, that is, the polarization directions of the first slit 221 and the second slit 223 are perpendicular to each other. For example, when the first slit 221 is a vertically polarized slit, the second slit 223 is a horizontally polarized slit, or, when the first slit 221 is a horizontally polarized slit, the second slit 223 is a vertically polarized slit.

The slit direction of the first slit 221 and the second slit 223 may be understood as being along the longitudinal direction of the slit, and the polarization direction of the first slit 221 and the second slit 223 may be understood as being along the narrow side direction of the slit.

In one embodiment, the slit direction of the first slit 221 is perpendicular to the trace direction of the first power feeding unit 213, and the slit direction of the second slit 223 is perpendicular to the trace direction of the second power feeding unit 215. That is, the polarization direction of the first slot 221 is the same as the polarization direction of the first power feeding unit 213, and the polarization direction of the second slot 223 is the same as the polarization direction of the second power feeding unit 215. For example, when the first slot 221 is a vertically polarized slot, the first feeding unit 213 is a vertically polarized feeding line, the second slot 223 is a horizontally polarized slot, and the first feeding unit 213 is a horizontally polarized feeding line.

The laminated antenna 230 includes a first radiation patch 231 and a second radiation patch 233 which are disposed corresponding to the first slot 221 and the second slot 223, wherein the first radiation patch 231 and the second radiation patch are respectively disposed on two opposite sides of the dielectric substrate 240, and the first radiation patch 231 is orthographically projected on the second radiation patch 233.

The dielectric substrate 240 may be made of a material having a high dielectric constant, such as plastic, ceramic, 3D glass, and the like. The dielectric substrate 240 includes an outer surface and an inner surface that are oppositely disposed, wherein the outer surface is the surface facing away from the ground layer 220, and the inner surface is the surface facing toward the ground layer 220. The first radiation patch 241 is attached to the outer surface of the dielectric substrate 240, the second radiation patch is attached to the inner surface of the dielectric substrate 240, and the first radiation patch 231 can be completely orthographically projected on the area where the second radiation patch 233 is located. In one embodiment, the geometric centers of the first and second radiation patches 231 and 233 are both located on an axis perpendicular to the plane of the back cover 113. That is, the geometric centers of the first and second radiation patches 231 and 233 are symmetrically disposed with respect to the plane of the back cover 113.

In an embodiment, the material of the first radiation patch 231 and the second radiation patch 233 may be a metal material, a transparent conductive material with high conductivity (e.g., indium tin oxide, silver nanowire, ITO material, graphene, etc.).

The feeding layer 210 feeds the laminated antenna 230 through the first slot 221 and the second slot 223, so that the first radiation patch 231 generates a resonance in a first frequency band and the second radiation patch 233 generates a resonance in a second frequency band. The first slot 221 and the second slot 223 can be coupled with the laminated antenna 230 to generate resonance in a predetermined frequency band, so that the first radiation patch 231 generates resonance in a first frequency band and the second radiation patch 233 generates resonance in a second frequency band, thereby realizing full-band coverage of the antenna module.

The third band of resonance is generated by adjusting the sizes of the first slot 221 and the second slot 223 provided in the ground layer 220 and coupling with the laminated antenna 230 (the first radiation patch 231 and the second radiation patch 233). In one embodiment, for example, the slot dimensions (e.g., length, width, and distance between the slot and the laminated antenna 230) may be varied, and when the lengths of the first slot 221 and the second slot 223 are set to 1/2 medium wavelengths, the first slot 221, the second slot 223 and the laminated antenna 230 (the first radiation patch 231 and the second radiation patch 233) are coupled to generate resonance in the vicinity of the 25GHz-26GHz band. The first slot 221 and the second slot 223 can be coupled with the first radiation patch 231 to enable the first radiation patch 231 to generate 28GHz resonance, and can be coupled with the second radiation patch 233 to enable the second radiation patch 233 to generate 39GHz resonance, so as to implement dual-frequency coverage of the antenna module.

According to the 3GPP 38.101 protocol, the 5G NR uses mainly two sections of frequencies: FR1 frequency band and FR2 frequency band. The frequency range of the FR1 frequency band is 450MHz-6GHz, which is generally called as sub 6GHz frequency band; the frequency range of the FR2 frequency band is 4.25GHz-52.6GHz, commonly referred to as millimeter Wave (mm Wave). The 3GPP specifies 5G millimeter wave frequency bands as follows: n257(26.5-29.5GHz), n258(24.25-27.5GHz), n261(27.5-28.35GHz) and n260(37-40 GHz).

In the antenna module, the first slot 221 and the second slot 223 which are separated and are polarized in an inverse orthogonal manner are formed in the ground layer 220 of the antenna module, the feeding layer 210 of the bottom layer is coupled to the laminated antenna 230 (the first radiation patch 231 and the second radiation patch 233) through the first slot 221 and the second slot 223, so that the first radiation patch 231 generates resonance in a first frequency band (for example, 28GHz frequency band) and the second radiation patch 233 generates resonance in a second frequency band (for example, 39GHz frequency band), and the size of the first slot 221 and the second slot 223 is adjusted to generate resonance in a third frequency band (for example, 25GHz) through coupling of the laminated antenna 230, so that the antenna can meet the requirements of a 5G millimeter wave full frequency band (for example, n257, n258, and n261 band), and dual polarization.

As shown in fig. 2, in an embodiment, the first radiation patch 231 is attached to a side of the antenna substrate 240 facing away from the ground layer 220, and the second radiation patch 233 is attached to a side of the antenna substrate 240 facing toward the ground layer 220. Specifically, the antenna substrate 240 includes a third surface and a fourth surface that are opposite to each other, wherein the first radiation patch 231 is attached to the third surface of the antenna substrate 240, and the second multiple radiation patch is attached to the fourth surface of the antenna substrate 240. And the geometric centers of the first radiation patch 231 and the second radiation patch 233 are symmetrically arranged with respect to the plane of the antenna substrate 240.

In one embodiment, the first radiating patch 231 is a loop patch antenna; for example, a square annular patch or a circular annular patch. The second radiation patch 233 is one of a square patch, a circular patch, an annular patch, and a cross-shaped patch. In this embodiment, when the first radiation patch 231 is a loop patch antenna, the effective radiation rate of the second radiation patch 233 can be increased.

In an embodiment, when the first radiation patch 241 is a loop patch antenna, the outer loop shape of the first radiation patch 241 is the same as the shape of the second radiation patch 243. For example, as shown in fig. 3a, the first radiation patch 241 is a circular ring patch, and the second radiation patch 243 is a circular patch; alternatively, as shown in fig. 3b, the first radiation patch 241 is a square ring patch, the second radiation patch 243 is a square patch, etc.

As shown in fig. 4a, in an embodiment, the first slit 221 and the second slit 223 are both rectangular slits, wherein a slit direction of the first slit 221 is perpendicular to a slit direction of the second slit 223. Here, the slit direction may be understood as a direction (L) along the long side of the rectangular slit, and the polarization direction of the first slit 221 and the second slit 223 may be understood as a direction (W) along the narrow side. The routing direction of the first feeding unit 213 is perpendicular to the slit direction of the first slit 221, and the routing direction of the second feeding unit 215 is perpendicular to the slit direction of the second slit 223.

In an embodiment, at least part of the first slit 221 is orthographically projected on the area of the first radiation patch 231 or the second radiation patch 233, and at least part of the second slit 223 is orthographically projected on the area of the first radiation patch 231 or the second radiation patch 233.

The first radiation patch 231 and the second radiation patch 233 are coupled and fed through the first slot 221 and the second slot 223, so that the first slot 221, the second slot 223 and the first radiation patch 231 generate 28GHz resonance and the second radiation patch 233 generates 39GHz resonance, thereby meeting the requirements of dual-frequency coverage and dual-polarization of the antenna module.

As shown in fig. 4b, in an embodiment, the first slit 221 and the second slit 223 have the same shape, and the first slit 221 is taken as an example for description, wherein the first slit 221 includes a first portion 221-1, and a second portion 221-2 and a third portion 221-3 respectively communicated with the first portion 221-1, the second portion 221-2 and the third portion 221-3 are arranged in parallel, and the first portion 221-1 is arranged perpendicular to the second portion 221-2 and the third portion 221-3 respectively; wherein the first portion 221-1, the second portion 221-2 and the third portion 221-3 are all linear slits. That is, the first slit 221 and the second slit 223 are both H-shaped slits.

Herein, the slit direction of the first slit 221 and the second slit 223 may be understood as an extending direction of the first portion 221-1, that is, a direction perpendicular to the second portion 221-2 or the third portion 221-3. Meanwhile, the routing directions of the first power feeding unit 213 and the second power feeding unit 215 are both arranged perpendicular to the first portion 221-1 of the "H" shaped slot.

In an embodiment, at least part of the first slit 221 is orthographically projected on the area of the first radiation patch 231 or the second radiation patch 233, and at least part of the second slit 223 is orthographically projected on the area of the first radiation patch 231 or the second radiation patch 233.

In this embodiment, the first slot 221 and the second slot 223 are formed in a manner that the polarization directions are orthogonal, and the first feeding unit 213 and the second feeding unit 215 of the bottom layer are coupled to feed the stacked antenna 230 (the first radiation patch 231 and the second radiation patch 233) through the first slot 221 and the second slot 223, respectively, so that the first radiation patch 231 generates a resonance in a 28GHz band, and the second radiation patch 233 generates a resonance in a 39GHz band. Meanwhile, by adjusting the sizes of the first slot 221 and the second slot 223 and coupling the stacked antenna 230 (the first radiation patch 231 and the second radiation patch 233) to generate another resonance around the 25GHz band, the antenna can meet the requirements of 3GPP full-band and dual-polarization.

As shown in fig. 5, in an embodiment, the antenna module further includes a supporting layer 250 disposed between the dielectric substrate 240113 and the ground layer 220. The support layer 250 may be a laminated structure formed of a foam layer, an air layer, an adhesive layer, or other low dielectric constant support material to prevent the second radiation patch 233 from falling.

Specifically, the dielectric constant of the support layer 250 is smaller than that of the dielectric substrate 240.

As shown in fig. 6, in an embodiment, the number of the first radiation patches 231 and the second radiation patches 233 is equal and may be multiple. That is, the first radiation patch 231 and the second radiation patch 233 are provided in pair. While the number of the first and second slots 221 and 223 opened in the ground layer 220 is matched to the number of the first radiation patches 231. For example, the number of the first slits 221 and the second slits 223 may be equal to the number of the first radiation patches 231.

For example, the number of the first radiation patch 231 and the second radiation patch 233 may be set to four each. That is, four first radiation patches 231 may constitute the first antenna array, and four second radiation patches 233 may constitute the second antenna array. Specifically, the first antenna array and the second antenna array are both one-dimensional linear arrays. For example, the first antenna array is a 1 × 4 linear array, and the second antenna array is also a 1 × 4 linear array.

In this embodiment, the first antenna array and the second antenna array are both one-dimensional linear arrays, so that the occupied space of the antenna module can be reduced, and an angle needs to be scanned, thereby simplifying the design difficulty, the test difficulty, and the complexity of beam management.

As shown in fig. 7, in an embodiment, the antenna module further includes a dual-band rf integrated circuit 260, the dual-band rf integrated circuit 260 is packaged on a side of the first dielectric layer 210 facing away from the ground plane 220, and a feeding port of the dual-band rf integrated circuit 260 is connected to the feeding unit 250 to interconnect with the laminated antenna 230.

As shown in fig. 8, an embodiment of the present application further provides an electronic device. In one embodiment, an electronic device includes:

a feed layer 810;

a ground layer 820 disposed on the feed layer 810 and having a first slot 821 and a second slot 823 which are separated and have orthogonal polarization directions;

a non-metal back cover 113 disposed corresponding to the ground layer 880;

the laminated antenna 830 includes a first radiation patch 831 and a second radiation patch 833 which are disposed corresponding to the first gap 821 and the second gap 823, wherein the first radiation patch 831 and the second radiation patch 833 are disposed opposite to each other and are located in different areas of the rear cover 113; wherein the content of the first and second substances,

the feed layer 810 feeds the laminated antenna 830 through the first and second slots 821 and 823 so that the first radiating patch 831 generates resonance of a first frequency band and the second radiating patch 833 generates resonance of a second frequency band.

The feeding layer 810 feeds the laminated antenna 830 through the first and second slots 821 and 823, so that the first radiating patch 831 generates resonance in a first frequency band and the second radiating patch 833 generates resonance in a second frequency band. The first slot 821 and the second slot 823 can be coupled with the laminated antenna 830 to generate resonance in a preset frequency band, so that the first radiation patch 831 generates resonance in a first frequency band and the second radiation patch 833 generates resonance in a second frequency band, thereby realizing full-frequency coverage of the antenna module.

In an embodiment, the first slot 821 and the second slot 823 provided in the ground layer 880 are adjusted in size, and coupled with the laminated antenna 830 (the first radiation patch 831 and the second radiation patch 833) to generate resonance in the third frequency band. Specifically, the slot dimensions (e.g., length, width, and distance between the slot and the laminated antenna 830) may be changed, and when the lengths of the first slot 821 and the second slot 823 are set to 1/8 medium wavelengths, the first slot 821 and the second slot 823 are coupled to the laminated antenna 830 (the first radiation patch 831 and the second radiation patch 833) to generate resonance in the vicinity of the 25GHz-26GHz band. The first slot 821 and the second slot 823 can perform coupling feeding with the first radiation patch 831 to enable the first radiation patch 831 to generate 28GHz resonance and can perform coupling feeding with the second radiation patch 833 to enable the second radiation patch 833 to generate 39GHz resonance, so that full-frequency coverage of the antenna module is achieved.

According to the 3GPP 38.101 protocol, the 5G NR uses mainly two sections of frequencies: FR1 frequency band and FR2 frequency band. The frequency range of the FR1 frequency band is 450MHz-6GHz, which is generally called as sub 6GHz frequency band; the frequency range of the FR2 frequency band is 4.25GHz-52.6GHz, commonly referred to as millimeter Wave (mm Wave). The 3GPP specifies 5G millimeter wave frequency bands as follows: n257(26.5-29.5GHz), n258(24.25-27.5GHz), n261(27.5-28.35GHz) and n260(37-40 GHz).

In this embodiment, the laminated antenna 830 is integrated on the non-metal rear cover 113 (e.g., 3D glass, ceramic back case, etc.) with a high dielectric constant, so that the coverage problem caused by the non-metal rear cover 113 is directly reduced, and a high gain is maintained in a full millimeter wave band specified by 3 GPP. Meanwhile, the stacked antenna 830 is fed by adopting a dual-slot polarization direction orthogonal coupling mode, so that the impedance bandwidth of the antenna module can cover the millimeter wave full-band requirement specified by 3GPP, and full-band, dual-polarization, high-efficiency and high-gain antenna radiation is realized.

In one embodiment, the feeding layer 810 includes a feeding substrate 811 and a first feeding unit 813 and a second feeding unit 815 disposed on the feeding substrate 811, and the feeding polarization directions of the first feeding unit 813 and the second feeding unit 815 are different. The feeding substrate 811 includes a first surface and a second surface opposite to each other. Note that the first surface is a surface facing away from the ground plane 880, and the second surface is a surface facing the ground plane 880. Wherein, the first feeding unit 813 and the second feeding unit 815 are both disposed on the first surface.

In an embodiment, the first feeding unit 813 and the second feeding unit 815 each include a feeding trace. Here, the first feeding unit 813 can be understood as a vertical polarization feeding trace, and the second feeding unit 815 can be understood as a horizontal polarization feeding trace. Alternatively, the first feeding unit 813 can also be understood as a horizontally polarized feeding trace, and the second feeding unit 815 can be understood as a vertically polarized feeding trace.

The routing direction of the feed unit is the extending direction of the feed routing. Specifically, the feed line is a strip line, so that the impedance is easy to control, and meanwhile, the shielding is good, the loss of electromagnetic energy can be effectively reduced, and the antenna efficiency is improved.

In one embodiment, the first slot 821 is separated from the second slot 823, wherein the first slot 821 corresponds to the first feeding unit 813, and the second slot 823 corresponds to the second feeding unit 815. Specifically, the area of the first power feeding unit 813, which is orthographically projected on the ground plane 880, may entirely cover the area where the first slot 821 is located. The area of the second feeding unit 815 orthographically projected on the ground layer 880 may entirely cover the area where the second slot 823 is located.

The slit direction of the first slit 821 and the slit direction of the second slit 823 are perpendicular to each other, that is, the polarization directions of the first slit 821 and the second slit 823 are perpendicular to each other. For example, when the first slit 821 is a vertically polarized slit, the second slit 823 is a horizontally polarized slit, or when the first slit 821 is a horizontally polarized slit, the second slit 823 is a vertically polarized slit.

Note that the slit direction of the first slit 821 and the second slit 823 is understood to be along the long side direction of the slit, and the polarization direction of the first slit 821 and the second slit 823 is understood to be along the narrow side direction of the slit.

In one embodiment, the slit direction of the first slit 821 is perpendicular to the trace direction of the first feeding unit 813, and the slit direction of the second slit 823 is perpendicular to the trace direction of the second feeding unit 815. That is, the polarization direction of the first slot 821 is the same as the polarization direction of the first feed unit 813, and the polarization direction of the second slot 823 is the same as the polarization direction of the second feed unit 815. For example, when the first slot 821 is a vertically polarized slot, the first feed unit 813 is a vertically polarized feed trace, the second slot 823 is a horizontally polarized slot, and the first feed unit 813 is a horizontally polarized feed trace.

In one embodiment, the first radiating patch 831 is attached to a side of the rear cover 113 facing away from the ground layer 880, and the second radiating patch 833 is attached to a side of the rear cover 113 facing the ground layer 880. Specifically, the rear cover 113 includes a third surface and a fourth surface that are opposite to each other, wherein the first radiation patch 831 is attached to the third surface of the rear cover 113, and the second complex radiation patch is attached to the fourth surface of the rear cover 113. And the geometric centers of the first and second radiation patches 831 and 833 are symmetrically arranged with respect to the plane of the back cover 113.

In one embodiment, the first radiating patch 831 is a loop patch antenna; for example, a square annular patch or a circular annular patch. The second radiation patch 833 is one of a square patch, a circular patch, an annular patch, and a cross patch. In this embodiment, when the first radiation patch 831 is a loop patch antenna, the effective radiation rate of the second radiation patch 833 can be increased.

The geometric centers of the first and second radiation patches 831 and 833 are located on an axis perpendicular to the plane of the back cover 113. That is, the geometric centers of the first and second radiation patches 831 and 833 are symmetrically disposed with respect to the plane of the back cover 113. In one embodiment, when the first radiation patch 841 is a loop patch antenna, the outer loop shape of the first radiation patch 841 is the same as the shape of the second radiation patch 843. For example, the first radiation patch 841 is a circular ring patch, and the second radiation patch 843 is a circular patch; alternatively, the first radiation patch 841 is a square ring patch, the second radiation patch 843 is a square patch, or the like.

In an embodiment, the material of the first radiating patch 831 and the second radiating patch 833 can be a metal material, a transparent conductive material with high conductivity (e.g., indium tin oxide, silver nanowires, ITO material, graphene, etc.).

In an embodiment, the back cover 113 of the electronic device is a glass back cover 113, and the first radiation patch 831 and the second radiation patch 833 are both made of a transparent material, wherein the first radiation patch 831 and the second radiation patch 833 are integrated in different planes of the glass back cover 113. The first radiation patch 831 and the second radiation patch 833 are made of transparent antenna materials, and have high light transmittance in the optical band, and have high electrical conductivity in the microwave band, such as the millimeter wave band, similar to a metal antenna.

In an embodiment, the first slit 821 and the second slit 823 are both rectangular slits, wherein a slit direction of the first slit 821 is perpendicular to a slit direction of the second slit 823. Here, the slit direction may be a direction (L) along the long side of the rectangular slit, and the polarization directions of the first slit 821 and the second slit 823 may be a direction (W) along the narrow side. The routing direction of the first feeding unit 813 is perpendicular to the slotting direction of the first slot 821, and the routing direction of the second feeding unit 815 is perpendicular to the slotting direction of the second slot 823.

In an embodiment, at least a portion of the first slit 821 is orthographically projected onto an area of the first or second radiation patch 831 or 833, and at least a portion of the second slit 823 is orthographically projected onto an area of the first or second radiation patch 831 or 833.

In an embodiment, the first slit 821 and the second slit 823 have the same shape, and the first slit 821 is taken as an example for description, wherein the first slit 821 includes a first portion, and a second portion and a third portion respectively communicating with the first portion, the second portion and the third portion are arranged in parallel, and the first portion is respectively arranged perpendicular to the second portion and the third portion; wherein the first portion, the second portion and the third portion are all linear slits. That is, the first slit 821 and the second slit 823 are both H-shaped slits. Here, the slit direction of the first slit 821 and the second slit 823 may be understood as an extending direction of the first portion, that is, a direction perpendicular to the second portion or the third portion. Meanwhile, the wiring directions of the first feed unit and the second feed unit are both perpendicular to the first part of the H-shaped gap.

In one embodiment, the back cover 113 is a glass back cover 113 (e.g., GG5 glass), a Dielectric Constant (DK) of 7.1, a loss factor (Df, also called Dielectric loss factor, Dielectric loss tangent tan δ) of 0.02, and a thickness of the back cover 113 of 0.55 mm; the supporting layer is a foam layer, the thickness of the supporting layer is 0.45mm, the dielectric constant DK is 1.9, and the loss factor Df is 0.02; the first radiation patch 231 is a square ring structure, and the outer edge is 1.3mm long and the inner edge is 1.1mm long; the second radiation patch 233 is a square patch with a side length of 1.3 mm; the first slot 221 and the second slot 223 on the ground layer 220 have the same structure size, and are rectangular slots, and the rectangular slots are 2.75mm long and 0.16mm wide.

FIG. 9 is a schematic diagram of the reflection coefficient of an antenna module according to an embodiment; as can be seen from FIG. 9, when the impedance bandwidth (S11 is less than or equal to-10 dB), the working frequency band of the antenna module can cover the full-frequency millimeter wave band (24.25-29.5 GHz, 37-40GHz) specified by 3 GPP. Fig. 10a is a schematic diagram illustrating the antenna efficiency of the antenna module at 28GHz band in an embodiment, and fig. 10b is a schematic diagram illustrating the antenna efficiency of the antenna module at 39GHz band in an embodiment. As can be seen from FIGS. 10a and 10b, the antenna radiation efficiency is 80% or more in the 28G band (24.25 to 29.5GHz) and 70% or more in the 39GHz band (37 to 40 GHz). FIG. 11a is a schematic diagram illustrating the antenna gain of the antenna module under X polarization with 0 ° phase shift in 28GHz band in an embodiment; FIG. 11b is a schematic diagram illustrating the antenna gain of the antenna module with 0 ° phase shift in 39GHz band under X polarization in an embodiment. As can be seen from FIGS. 11a and 11b, the X-polarization feeding maintains 9.3dB or more in the 28GHz band (24.25-29.5 GHz), 10.1dB or more in the 39GHz band (37-40GHz), 9.9dB or more in the 28GHz band (24.25-29.5 GHz) and 10dB or more in the 39GHz band (37-40GHz), which satisfy the 3GPP performance index.

FIG. 12 is an antenna pattern of an embodiment of an antenna module at 28GHz and 39GHz, wherein 12(a) shows the antenna pattern at 0 ° at 28 GHz; 12(b) shows the antenna pattern at 28GHz 45 ° scan direction; 12(c) shows the antenna pattern at 39GHz 0 deg. As can be seen from fig. 12(a) and 10(b), the antenna module has high gain and phase-scanning function. In the electronic device in this embodiment, the laminated antenna 830 may be integrated in the non-metal rear cover 113 (such as 3D glass, ceramic back shell, etc.) with a high dielectric constant, so as to directly reduce the coverage problem caused by the non-metal rear cover 113, and maintain a high gain in the full millimeter wave band specified by 3 GPP. Meanwhile, the laminated antenna 830 is fed by adopting a dual-slot polarization direction orthogonal coupling mode, so that the impedance bandwidth (S11 is less than or equal to-10 dB) of the antenna module can cover the millimeter wave full-band requirement specified by 3GPP, meanwhile, the radiation efficiency of the antenna module is still over 80% in a 28G frequency band (24.25-29.5 GHz), and the radiation efficiency of the antenna module is over 70% in a 39GHz frequency band (37-40GHz), thereby realizing full-band, dual-polarization, high-efficiency and high-gain antenna radiation.

The electronic Device may be a communication module including a Mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), a wearable Device (e.g., a smart watch, a smart bracelet, a pedometer, etc.), or other settable antenna.

Fig. 13 is a block diagram of a partial structure of a mobile phone related to an electronic device provided in an embodiment of the present invention. Referring to fig. 13, a handset 1300 includes: the array antenna 1310, the memory 1320, the input unit 1330, the display unit 1340, the sensor 1350, the audio circuit 1360, the wireless fidelity (WIFI) module 1370, the processor 1380, and the power supply 1390. Those skilled in the art will appreciate that the handset configuration shown in fig. 13 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The array antenna 1310 may be used for receiving and transmitting information or receiving and transmitting signals during a call, and may receive downlink information of a base station and then process the received downlink information to the processor 1380; the uplink data may also be transmitted to the base station. The memory 1320 may be used to store software programs and modules, and the processor 1380 executes various functional applications and data processing of the cellular phone by operating the software programs and modules stored in the memory 1320. The memory 1320 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function (such as an application program for a sound playing function, an application program for an image playing function, and the like), and the like; the data storage area may store data (such as audio data, an address book, etc.) created according to the use of the mobile phone, and the like. Further, the memory 1320 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 1330 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone 1300. In one embodiment, input unit 1330 may include a touch panel 1331 as well as other input devices 1332. Touch panel 1331, which may also be referred to as a touch screen, can collect touch operations by a user (e.g., operations by a user on or near touch panel 1331 using a finger, a stylus, or any other suitable object or accessory) and drive the corresponding connection device according to a preset program. In one embodiment, touch panel 1331 can include two portions, a touch measurement device and a touch controller. The touch measuring device measures the touch direction of a user, measures signals brought by touch operation and transmits the signals to the touch controller; the touch controller receives touch information from the touch measurement device, converts it to touch point coordinates, and provides the touch point coordinates to the processor 1380, where the touch controller can receive and execute commands from the processor 1380. In addition, the touch panel 1331 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 1330 may include other input devices 1332 in addition to the touch panel 1331. In one embodiment, other input devices 1332 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), and the like.

The display unit 1340 may be used to display information input by a user or information provided to the user and various menus of the cellular phone. The display unit 1340 may include a display panel 1341. In one embodiment, the Display panel 1341 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. In one embodiment, touch panel 1331 can overlay display panel 1341 and, when touch panel 1331 measures a touch event thereon or thereabout, communicate to processor 1380 to determine the type of touch event, and processor 1380 then provides a corresponding visual output on display panel 1341 based on the type of touch event. Although in fig. 13, the touch panel 1331 and the display panel 1341 are two independent components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 1331 and the display panel 1341 may be integrated to implement the input and output functions of the mobile phone.

The cell phone 1300 may also include at least one sensor 1350, such as light sensors, motion sensors, and other sensors. In one embodiment, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 1341 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 1341 and/or the backlight when the phone is moved to the ear. The motion sensor can comprise an acceleration sensor, the acceleration sensor can measure the magnitude of acceleration in each direction, the magnitude and the direction of gravity can be measured when the mobile phone is static, and the motion sensor can be used for identifying the application of the gesture of the mobile phone (such as horizontal and vertical screen switching), vibration identification related functions (such as pedometer and knocking) and the like. The mobile phone may be provided with other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor.

The audio circuit 1360, speaker 1361, and microphone 1362 may provide an audio interface between the user and the cell phone. The audio circuit 1360 may transmit the electrical signal converted from the received audio data to the speaker 1361, and the electrical signal is converted into a sound signal by the speaker 1361 and output; on the other hand, the microphone 1362 converts the collected sound signal into an electrical signal, converts the electrical signal into audio data after being received by the audio circuit 1360, and then outputs the audio data to the processor 1380 for processing, and then the audio data may be transmitted to another mobile phone through the array antenna 1310, or the audio data may be output to the memory 1320 for subsequent processing.

The processor 1380 is a control center of the mobile phone, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 1320 and calling data stored in the memory 1320, thereby integrally monitoring the mobile phone. In one embodiment, processor 1380 may include one or more processing units. In one embodiment, the processor 1380 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, application programs, and the like; the modem processor handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated within processor 1380.

The handset 1300 also includes a power supply 1390 (e.g., a battery) to supply power to the various components, which may preferably be logically connected to the processor 1380 via a power management system to manage charging, discharging, and power consumption management functions via the power management system.

In one embodiment, the cell phone 1300 may also include a camera, a bluetooth module, and the like.

Any reference to memory, storage, database, or other medium used herein may include non-volatile and/or volatile memory. Suitable non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and bus dynamic RAM (RDRAM).

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (23)

1. An antenna module, comprising:

a feed layer;

the grounding layer is positioned on the feed layer and is provided with a first gap and a second gap which are separated and orthogonally arranged in the polarization direction; the first gap and the second gap are arranged on the grounding layer vertically and separately;

the dielectric substrate is positioned on the grounding layer;

the laminated antenna comprises a first radiation patch and a second radiation patch which are arranged corresponding to the first gap and the second gap, wherein the first radiation patch and the second radiation patch are respectively positioned on two sides of the dielectric substrate which are arranged in a back-to-back manner, and the first radiation patch is orthographically projected on the second radiation patch; the first radiation patch is an annular patch antenna, and the shape of the outer ring of the first radiation patch is the same as that of the second radiation patch;

the feed layer feeds the laminated antenna through the first gap and the second gap so that the first radiation patch generates resonance of a first frequency band and the second radiation patch generates resonance of a second frequency band;

and adjusting the sizes of the first gap and the second gap to enable the laminated antenna to generate resonance of a third frequency band.

2. The antenna module of claim 1, wherein the first radiating patch is attached to a side of the dielectric substrate facing away from the ground layer, and the second radiating patch is attached to a side of the dielectric substrate facing toward the ground layer.

3. The antenna module of claim 1, wherein the feed layer comprises a first feed unit and a second feed unit, and the first feed unit and the second feed unit have different routing directions; wherein the content of the first and second substances,

the slotting direction of the first slot is perpendicular to the wiring direction of the first feed unit, and the slotting direction of the second slot is perpendicular to the wiring direction of the second feed unit.

4. The antenna module of claim 3, wherein the first slot and the second slot are both rectangular slots, and wherein a slot opening direction of the first slot is perpendicular to a slot opening direction of the second slot.

5. The antenna module of claim 1, wherein at least a portion of the first slot is orthographic projected onto an area of the first radiating patch and at least a portion of the second slot is orthographic projected onto an area of the first radiating patch.

6. The antenna module of claim 1, wherein the centers of the first and second radiating patches are both located on a central axis perpendicular to the back cover.

7. The antenna module of claim 6, wherein the second radiating patch is one of a square patch, a circular patch, a ring patch, and a cross patch.

8. The antenna module of claim 1, further comprising a support layer disposed between the dielectric substrate and the ground plane.

9. The antenna module of claim 8, wherein the dielectric constant of the support layer is less than the dielectric constant of the dielectric substrate.

10. The antenna module of claim 3, further comprising a radio frequency integrated circuit, wherein the radio frequency integrated circuit is packaged on a side of the feeding layer away from the ground layer, and a feeding port of the radio frequency integrated circuit is connected to the first feeding unit and the second feeding unit respectively, so as to interconnect the laminated antenna.

11. The antenna module of any one of claims 1-10, wherein the first frequency band comprises a 5G millimeter wave 28GHz frequency band, and the second frequency band comprises a 5G millimeter wave 39GHz frequency band.

12. The antenna module of claim 2, wherein the third frequency band comprises a 5G millimeter wave 25GHz frequency band.

13. An electronic device, comprising:

a feed layer;

the grounding layer is positioned on the feed layer and is provided with a first gap and a second gap which are separated and orthogonally arranged in the polarization direction; the first gap and the second gap are arranged on the grounding layer vertically and separately;

the nonmetal rear cover is arranged corresponding to the grounding layer;

the laminated antenna comprises a first radiation patch and a second radiation patch which are arranged corresponding to the first gap and the second gap, wherein the first radiation patch and the second radiation patch are arranged in a back-to-back manner and are positioned in different areas of the rear cover; the first radiation patch is an annular patch antenna, and the shape of the outer ring of the first radiation patch is the same as that of the second radiation patch;

the feed layer feeds the laminated antenna through the first gap and the second gap so that the first radiation patch generates resonance of a first frequency band and the second radiation patch generates resonance of a second frequency band;

and adjusting the sizes of the first gap and the second gap to enable the laminated antenna to generate resonance of a third frequency band.

14. The electronic device of claim 13, wherein the first radiating patch is attached to a side of the non-metallic back cover facing away from the ground layer, and wherein the second radiating patch is attached to a side of the non-metallic back cover facing toward the ground layer.

15. The electronic device of claim 14, wherein the non-metallic back cover is a glass back cover, and wherein the first and second radiating patches are both made of a transparent material, wherein,

the first radiation patch and the second radiation patch are integrated in different planes of the glass rear cover.

16. The electronic device according to claim 13, wherein the feed layer comprises a first feed unit and a second feed unit, and the first feed unit and the second feed unit have different routing directions; wherein the content of the first and second substances,

the slotting direction of the first slot is perpendicular to the wiring direction of the first feed unit, and the slotting direction of the second slot is perpendicular to the wiring direction of the second feed unit.

17. The electronic device according to claim 16, wherein the first slot and the second slot are both rectangular slots, and wherein a slit direction of the first slot is perpendicular to a slit direction of the second slot.

18. The electronic device of claim 13, wherein the first radiating patch and the second radiating patch are each centered on a central axis that is perpendicular to the back cover.

19. The electronic device of claim 13, further comprising a support layer disposed between the non-metallic back cover and the ground layer.

20. The electronic device of claim 19, wherein the dielectric constant of the support layer is less than the dielectric constant of the back cover.

21. The electronic device of claim 13, further comprising a radio frequency integrated circuit, wherein the radio frequency integrated circuit is packaged on a side of the feeding layer facing away from the ground layer, and a feeding port of the radio frequency integrated circuit is connected to the first feeding unit and the second feeding unit respectively so as to be interconnected with the laminated antenna.

22. The electronic device of any of claims 13-21, wherein the first frequency band comprises a 5G millimeter wave 28GHz frequency band, and wherein the second frequency band comprises a 5G millimeter wave 39GHz frequency band.

23. The electronic device of claim 14, wherein the third frequency band comprises a 5G millimeter wave 25GHz frequency band.