CN113140904A

CN113140904A - Dual-polarized antenna

Info

Publication number: CN113140904A
Application number: CN202110389323.4A
Authority: CN
Inventors: 邢文韬; 张亚飞; 张晓�; 刘博�; 李红芳; 张春荣; 李向坤
Original assignee: Xi'an Tianhe Defense Technology Co ltd
Current assignee: Xi'an Tianhe Defense Technology Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-07-20
Anticipated expiration: 2041-04-12
Also published as: CN113140904B

Abstract

The application is suitable for antenna technical field, provides a dual polarized antenna, includes: the antenna comprises a plurality of first super-meter units, a first substrate, at least one first radiating unit, a dielectric filling layer, at least one second radiating unit, a second substrate, a first metal ground, a third substrate, a feeder line and an antenna feed point; the second radiation units are distributed on the first surface of the second substrate, the number of the second radiation units is the same as that of the first radiation units, and the middle points of the second radiation units are opposite to the middle points of the corresponding first radiation units. The dual-polarized antenna can improve antenna gain.

Description

Dual-polarized antenna

Technical Field

The application relates to the technical field of antennas, in particular to a dual-polarized antenna.

Background

In recent years, with the rapid development of wireless communication technology, the number of users is increasing, and spectrum resources are more and more fully utilized, which shows a tension trend. In the current communication system, the dual-polarized antenna can transmit two different polarized signals in the same bandwidth, so that the frequency band utilization rate is doubled, and the communication capacity is doubled.

However, in an onboard or vehicle-mounted mobile communication application, due to external environments such as space and volume limitations, the gain of the antenna is relatively limited, and the gain requirement in some high-gain scenarios cannot be met, so that the communication quality is affected.

Disclosure of Invention

The embodiment of the application provides a dual-polarized antenna which can improve antenna gain.

In a first aspect, an embodiment of the present application provides a dual-polarized antenna, including: the antenna comprises a plurality of first super-meter units, a first substrate, at least one first radiating unit, a dielectric filling layer, at least one second radiating unit, a second substrate, a first metal ground, a third substrate, a feeder line and an antenna feed point;

the first super-surface units are distributed on the first surface of the first substrate, and the first radiation units are distributed on the second surface of the first substrate;

the second radiating elements are distributed on the first surface of the second substrate, the number of the second radiating elements is the same as that of the first radiating elements, the middle point of each second radiating element is opposite to the middle point of the corresponding first radiating element, the second radiating elements and the first radiating elements are filled by the dielectric filling layer, the first surface of the first metal ground is attached to the second surface of the second substrate, the second surface of the first metal ground is attached to the first surface of the third substrate, the feeder line is attached to the second surface of the third substrate, each first radiating element is connected with the feeder line through a metal through hole, and the feeder line is connected with the antenna feeding point.

In this embodiment, when the resonant cavity can be formed to radiate compared with a single radiating element through the one-to-one correspondence of the midpoints of the first radiating elements and the second radiating elements, on the premise of ensuring high gain of the antenna, the thickness of the required substrate is greatly reduced, so that the total thickness of the antenna is greatly reduced, the light weight of the antenna is realized, and the application scenes are richer. Meanwhile, the first super-meter unit is arranged on the first surface of the first substrate, so that the combination of the super-meter unit and the radiation unit is realized, and a frequency selection surface is formed by adopting a structure formed by combining the super-meter unit and the radiation unit, so that side lobes can be effectively inhibited, the directivity of the antenna is enhanced, the wave beam convergence is realized, and the antenna gain in a specific direction is improved.

Optionally, the antenna further comprises: and the second super-meter units are distributed on the second surface of the first substrate and around the first radiation unit, and the midpoints of the second super-meter units are opposite to the corresponding midpoints of the first super-meter units.

The second super-meter units are distributed around the first radiating unit, so that side lobes can be further suppressed, the directivity of the antenna is further enhanced, the beam convergence is enhanced, and the antenna gain in a specific direction is further improved.

Optionally, the antenna feeding point is disposed on the first surface of the second substrate, and the antenna feeding point is connected to the feeder line through the metal via hole, so that interference from other external signals can be avoided, and transmission performance of the signal is ensured.

Optionally, the method further comprises: the first surface of the fourth substrate is attached to the feeder line, and the second surface of the fourth substrate is attached to the first surface of the second metal ground. Through the setting that increases fourth base plate and second metal ground in the other side of feeder, can wrap up the feeder in the inside of antenna, form the stripline, adopt the stripline to transmit, compare the transmission surface and expose microstrip line in the air, reduced transmission loss, the second metal can not receive the interference of outside other signals when protecting feeder transmission signal, has improved signal transmission's quality.

Optionally, the antenna feed points are distributed on the second surface of the fourth substrate and connected to the feeder line through metal vias, so that signals can be led out to the outer surface of the antenna, and a connector or other modules can be mounted at the antenna feed points.

Optionally, the first watch unit is of an X-type structure.

Optionally, the second watch unit is a structural unit provided with a square gap.

Optionally, the second radiation unit is a corner cutting structure unit or a structure unit provided with a cross-shaped gap.

Optionally, the first substrate, the second substrate, the third substrate and the fourth substrate are made of flexible materials.

In the embodiment, the flexible material is adopted as the substrate, so that the antenna can be attached to the surface of the large-curvature structure, the conformal design of the antenna and the attached structure is realized, and the use scene is more flexible.

Optionally, the filler of the medium filling layer is air.

This embodiment adopts the resonant cavity between the air filling radiating element, when can reduce cost, further reduces the thickness of resonant cavity, and then reduces the whole thickness of antenna for the antenna has ultra-thin structure, easily miniaturization and lightweight, has reduced the requirement to service environment.

Optionally, the feeder line is in the form of a power division feed network.

In this embodiment, the power division feed network is used for signal transmission, and the signal intensity of each path of signal can be adjusted by adjusting the sizes of the feed lines at different positions, so that the transmission performance of the signal can be adjusted conveniently.

Drawings

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

Fig. 1 is a schematic longitudinal cross-sectional structure diagram of a dual-polarized antenna provided in an embodiment of the present application;

fig. 2 is a perspective view of a first radiating element and a first super-surface element provided in an embodiment of the present application, in a direction perpendicular to a first surface of a first substrate;

fig. 3 is a schematic longitudinal cross-sectional structure diagram of a dual-polarized antenna provided in an embodiment of the present application;

fig. 4 is a schematic cross-sectional view of an antenna feeding point and a feeding line on the same layer according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a distribution of positions of a first radiation unit and a second super-surface unit on a second surface of a first substrate according to an embodiment of the present application;

fig. 6 is a schematic diagram illustrating a distribution of positions of the first radiation unit and the second super-surface unit on the second surface of the first substrate according to an embodiment of the present application;

fig. 7 is a schematic longitudinal cross-sectional structure diagram of a dual-polarized antenna provided in an embodiment of the present application;

fig. 8 is a schematic longitudinal cross-sectional structure diagram of a dual-polarized antenna provided in an embodiment of the present application;

FIG. 9 is a schematic diagram of the structure and distribution of a first superscalar unit provided by an embodiment of the present application;

FIG. 10 is a diagram illustrating the structure and distribution of a second superscalar unit, according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a second radiation element of a 2 by 2 array according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a second radiation unit provided in an embodiment of the present application;

fig. 13 is a schematic structural diagram of a second radiation unit according to another embodiment of the present application;

fig. 14 is a schematic diagram of a power division feed network used by a 2-by-2 array of radiating elements according to an embodiment of the present application;

fig. 15 is a perspective view of a dual polarized antenna provided by an embodiment of the present application;

fig. 16 is a perspective view of a dual polarized antenna provided by an embodiment of the present application;

FIG. 17 is a graph of voltage standing wave ratio provided by an embodiment of the present application;

FIG. 18 is a graph of antenna gain provided by an embodiment of the present application;

FIG. 19 is a graph of antenna efficiency provided by an embodiment of the present application;

FIG. 20 is an antenna pattern for one direction as provided by an embodiment of the present application;

fig. 21 is an antenna pattern for another direction as provided by an embodiment of the present application;

fig. 22 is a graph of antenna gain provided by an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to" determining "or" in response to detecting ". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

In one embodiment, there is provided a dual polarized antenna, a longitudinal cross-sectional view of which may be as shown in fig. 1, comprising: a plurality of first super cells 111, a first substrate 121, at least one first radiation cell 131, a dielectric filling layer 140, at least one second radiation cell 132, a second substrate 122, a first metal ground 151, a third substrate 123, a feed line 161, and an antenna feed point 162.

Specifically, reference may be made to a schematic cross-sectional view of the antenna shown in fig. 1, where fig. 1 is only used for illustrating a relative position relationship between layers of the antenna, and is not used to limit a specific position of each functional unit on the substrate. As shown in fig. 1, the first super cells 111 are distributed on the first surface of the first substrate 121. The first radiation units 131 are distributed on the second surface of the first substrate 121, when the number of the first radiation units 131 is one, that is, the radiation units are in a structure of 1 by 1, as shown in fig. 2, fig. 2 is a perspective view of the first radiation units 131 and the first super-surface unit 111 in a direction perpendicular to the first surface of the first substrate, and as can be seen from fig. 2, the first radiation units 131 are distributed on the first surface of the first substrate 121, and an area where the first radiation units 131 are distributed is enlarged and covered in a direction perpendicular to the first surface of the first substrate 121. In fig. 2, the first radiation unit 131 and the first super-meter unit 111 are illustrated in the form of square metal patches, and the edges of the first radiation unit 131 and the first super-meter unit 111 form an included angle of forty-five degrees with the boundary of the first substrate 121. Alternatively, the first radiation unit 131 and the first super cell 111 may also have other shapes, such as an oval shape, a circular shape, a rectangular shape, or the like, which is not limited in this embodiment.

The first surface and the second surface of the same substrate are two opposite surfaces with the largest area, the orientation of the first surface of each substrate is the same, and the orientation of the second surface of each substrate is the same.

As described above, the second radiation units 132 are distributed on the first surface of the second substrate 122. It should be noted that the number of the second radiation units 132 is the same as that of the first radiation units 131, and the midpoint of each second radiation unit 132 is opposite to the midpoint of the corresponding first radiation unit 131, so that the second radiation units 132 and the first radiation units 131 form a resonant cavity, thereby improving the radiation performance of the second radiation units. Optionally, the midpoints of some of the first super cells 111 are opposite to the midpoints of the corresponding first radiation cells 131. Wherein, the space between the second radiation unit 132 and the first radiation unit 131 is filled by a dielectric filling layer. The first surface of the first metal ground 151 is attached to the second surface of the second substrate 122, the second surface of the first metal ground 151 is attached to the first surface of the third substrate 123, and the feeding line 161 is attached to the second surface of the third substrate 123, that is, the second radiating element 132 and the feeding line 161 are separated by the first metal ground 151, so that signal crosstalk is avoided. Each first radiating element 131 is connected to the feed line 161 through a metal via 171 through a first metal ground 151. Wherein the feeding line 161 and the antenna feeding point 162 are connected, optionally, when the feeding line 161 and the antenna feeding point 162 are on the same surface of the same substrate, they may be directly connected, and if they are on different substrates or different surfaces, they may be connected through the via 171.

In the embodiment shown in fig. 1, the resonant cavity can be formed by the opposite middle points of the first radiation units and the second radiation units one to one for radiation, and compared with the case that a single radiation unit is used for radiation, the thickness of the required substrate is greatly reduced on the premise of ensuring the high gain of the antenna, so that the total thickness of the antenna is greatly reduced, the light weight of the antenna is realized, and the application scenes are richer. Meanwhile, the first super-meter unit is arranged on the first surface of the first substrate, so that the combination of the super-meter unit and the radiation unit is realized, and a frequency selection surface is formed by adopting a structure formed by combining the super-meter unit and the radiation unit, so that side lobes can be effectively inhibited, the directivity of the antenna is enhanced, the wave beam convergence is realized, and the antenna gain in a specific direction is improved.

Optionally, on the basis of the embodiment shown in fig. 1, the dual-polarized antenna may further include: a plurality of second superlattice cells 112, the plurality of second superlattice cells 112 being distributed on the second surface of the first substrate 121 and around the first radiation cell 131, as shown in fig. 3. Fig. 3 is a schematic cross-sectional view of an antenna, and fig. 3 is only used for illustrating the relative position relationship between the layers of the antenna and is not used for limiting the specific position of each functional unit on the substrate. In fig. 3, the antenna feeding point 162 is located on the first surface of the second substrate 122 for example, wherein the antenna feeding point 162 is connected to the feeding line 161 through the via 171; fig. 4 is a schematic cross-sectional view of the antenna feeding point 162 and the feeding line 161 on the same layer, and the position of the antenna feeding point is not limited in this embodiment.

It should be noted that the number and the distribution form of the second super-meter units 112 vary with the number of the first radiation units 131, the number of the first radiation units 131 may be one, that is, the radiation units are in a structure of 1 by 1, as shown in fig. 5, fig. 5 is a schematic diagram of the position distribution of the first radiation units 131 and the second super-meter units 112 on the second surface of the first substrate 121, in fig. 5, the second super-meter units 121 are distributed around the first radiation units 131, as shown in fig. 5, a metal patch in which the first radiation units 131 and the second super-meter units 112 are square is taken as an example, and the edge of the first radiation units 131 and the second super-meter units 112 and the boundary of the first substrate 112 form an included angle of forty-five degrees.

Alternatively, taking a structure of the radiation unit being 2 by 2 as an example, the distribution of the positions of the first radiation unit 131 and the second super-surface unit 112 on the second surface of the first substrate 121 can be seen in fig. 6. Fig. 5 and 6 illustrate that the second super watch unit 112 surrounds the first radiation unit 131 once, and optionally, the second super watch unit 112 may also be disposed to surround the first radiation unit 131 twice or three times, which is not limited in the embodiment of the present application.

Alternatively, the center point of each first super cell 111 and the center point of the corresponding second super cell 112 may correspond, so that the second super cell 112 and the first super cell 111 form a resonant cavity. Optionally, the midpoints of some first super-meter cells 111 are opposite to the midpoints of the corresponding first radiation cells 131, and the midpoints of other first super-meter cells 111 are opposite to the midpoints of the corresponding second super-meter cells 112.

The first and second

super cells

111 and 112 are super material surface structure cells, and can change the radiation characteristics of the adjacent radiation cells. The metamaterial surface structure unit is made of a metamaterial, the metamaterial can be a left-handed material, a photonic crystal and the like, and the metamaterial is not limited in the embodiment of the application.

In this embodiment, the second super-meter units are distributed around the first radiation unit, so that side lobes can be further suppressed, the directivity of the antenna is further enhanced, beam convergence is enhanced, and the antenna gain in a specific direction is further improved.

Alternatively, on the basis of the above embodiment, the antenna feeding point 162 is disposed on the first surface of the second substrate 122, and the antenna feeding point 162 is connected to the feeding line 161 through the metal via 171. Specifically, as shown in fig. 1, the antenna feeding point 162 is disposed on the first surface of the second substrate 122, and compared with the antenna feeding point disposed on the outer surface of the whole antenna, the antenna feeding point can avoid interference from other external signals, and ensure the transmission performance of the signals.

Optionally, on the basis of the foregoing embodiments, the dual-polarized antenna may further include: a fourth substrate 124 and a second metal ground 152, wherein a first surface of the fourth substrate 124 is attached to the feed line 161, and a second surface of the fourth substrate 124 is attached to a first surface of the second metal ground 152. Reference may be made in particular to the schematic cross-sectional view of the antenna shown in fig. 7, where fig. 7 is used to illustrate the relative position relationship between the layers of the antenna, and is not used to limit the definition of the specific position of each functional unit on the substrate. In general, the metal grounds of different layers may be connected through vias to achieve common ground. In the embodiment shown in fig. 7, the feeder line can be wrapped inside the antenna by adding the fourth substrate and the second metal ground to the other side of the feeder line, so as to form a strip line. And the strip line is adopted for transmission, so that compared with a microstrip line with the transmission surface exposed in the air, the insertion loss in the transmission process is reduced. Meanwhile, the second metal can protect the feeder line from being interfered by other external signals during signal transmission, and the quality of signal transmission is improved.

Optionally, on the basis of the above embodiment, the antenna feeding points 162 are distributed on the second surface of the fourth substrate 124 and connected to the feeding lines 161 through the metal vias 171, for example, as shown in fig. 8 for the position of the antenna feeding point 162, the antenna feeding points are disposed on the second surface of the fourth substrate 124, and can lead out signals to the outer surface of the antenna, so as to facilitate mounting a connector or other module at the antenna feeding points.

Alternatively, the first wristwatch unit 111 may be a square structural unit, a structural unit in which square-shaped gaps are formed in the square, a structural unit in which gaps having other shapes are formed in the square, or a structural unit in which four corners of the square are chamfered, which is not limited in this embodiment of the application.

Alternatively, the second watch unit 112 may be a square structural unit, a structural unit in which square-shaped gaps are formed in the square, a structural unit in which gaps in other shapes are formed in the square, or a structural unit in which four corners of the square are chamfered, which is not limited in this embodiment of the application.

Alternatively, the first super cell 111 and the second super cell 112 may be the same structural unit or different structural units, which is not limited in this embodiment of the present application.

Alternatively, the number of the first and second

super cells

111 and 112 may be the same; optionally, the first and second

super cells

111 and 112 are in one-to-one correspondence and are disposed opposite to each other with the first substrate 121 in between, for example, a line connecting midpoints of any one of the first and second

super cells

111 and 112 is perpendicular to the first surface of the first substrate 121.

Optionally, the number of the first and second

super cells

111 and 112 may also be different; optionally, a second super-meter unit 112 and a first super-meter unit 111 are oppositely arranged with the first substrate 121 therebetween, for example, a line connecting midpoints of the second super-meter unit 112 and the opposite first super-meter unit 111 is perpendicular to the first surface of the first substrate; meanwhile, each first radiation unit 131 also corresponds to one first super-meter unit 111, any one first radiation unit 131 and the corresponding first super-meter unit 111 may be oppositely disposed at an interval of the first substrate 121, and a connecting line of midpoints of any one first radiation unit 131 and the corresponding first super-meter unit 111 is perpendicular to the first surface of the first substrate 121.

Alternatively, the first super cell 111 may have an X-type structure. For example, as shown in fig. 9, fig. 9 is a diagram illustrating a structure and a distribution of the first super cell 111 based on fig. 6. The performance of the antenna can be adjusted by adjusting the size of the X-shaped structure of the super-meter unit, so that the polarization characteristic of the antenna is enhanced, and the radiation performance is enhanced.

Optionally, the second watch unit 112 is a structural unit with a square gap. For example, as shown in fig. 10, fig. 10 is a diagram illustrating the structure and distribution of the second super cell 112 based on fig. 6. The super-meter unit with the square gap can adjust the performance of the antenna by adjusting the size of the square gap, so that the polarization characteristic of the antenna is enhanced, and the radiation performance is enhanced.

Alternatively, the second radiation unit 132 may have a square structure with rounded corners, which is specifically shown in fig. 11, where the second radiation unit 132 in a 2-by-2 array is illustrated in fig. 11 as an example.

Alternatively, the second radiation unit 132 is a corner-cut structure unit, for example, as shown in fig. 12. The embodiment can realize the adjustment of the antenna performance by adjusting the size and the angle of the chamfer.

Alternatively, the second radiation unit 132 is a structural unit with a cross-shaped slit, for example, as shown in fig. 13. The embodiment can realize the adjustment of the antenna performance by adjusting the size of the slot.

Alternatively, the filler of the dielectric filling layer 140 may be filled with a dielectric such as polyurethane foam, polyester resin (PET), or polyimide film (PI), or may be filled with air. The resonant cavity between the radiating elements is filled with air, so that the cost can be reduced, the thickness of the resonant cavity is further reduced, the overall thickness of the antenna is further reduced, the antenna has an ultrathin structure, the miniaturization and the lightweight are easy, and the requirement on the use environment is reduced.

Alternatively, the first substrate 121, the second substrate 122, the third substrate 123, and the fourth substrate 124 are made of a flexible material. The flexible material is adopted as the substrate, so that the antenna can be attached to the surface of the large-curvature structure, and the conformal design of the antenna and the attached structure is realized.

Optionally, the feed line 161 takes the form of a power dividing feed network, such as that shown in fig. 14. Fig. 14 is a schematic diagram based on fig. 11 and based on the power division feeding network adopted by the radiating elements of the 2-by-2 array in fig. 11. In fig. 14, two antenna feeding points 162 may be used as signal input and output points, respectively. The power division feed network is adopted for signal transmission, the signal intensity of each path of signal can be adjusted by adjusting the sizes of the feed lines at different positions, and the transmission performance of the signal is convenient to adjust.

Optionally, fig. 15 is a perspective view of a dual-polarized antenna provided in an embodiment, and fig. 15 illustrates relative positions of the first super cell 111, the second super cell 112, the first radiation element 131 in the 2 by 2 array, the second radiation element 132 in the 2 by 2 array, the feed line 161, and the antenna feed point 162 of the dual-polarized antenna in a direction perpendicular to the first surface of the first substrate 121. Fig. 15 is a relative position schematic in perspective view and does not show the structural units shown on the same surface of the same substrate.

Optionally, the embodiments of the present application also relate to other array forms of the radiation elements, such as 1 by 2 array, 1 by 4 array, 1 by 8 array, 2 by 4 array, 4 by 4 array, and so on. Alternatively, fig. 16 is a schematic distribution diagram of the first radiation element 131, the second radiation element 132 and the feed line 161 in the case of a 1-by-8 array of radiation elements, and fig. 16 illustrates the relative positions of the structural elements in a perspective view, which does not indicate that the structural elements are shown on the same surface of the same substrate.

For the dual polarized antenna shown in fig. 15, the respective parameters were measured and calculated. The Voltage Standing Wave Ratio (VSWR) of the above dual polarized antenna can be seen in fig. 17. In fig. 17, VSWR (1) is a curve of the voltage standing wave ratio of the first port (one of the antenna feeding points), and VSWR (2) is a curve of the voltage standing wave ratio of the second port (the other antenna feeding point), and as can be seen from fig. 17, when the voltage standing wave ratio is applied between the frequencies of 14GHz and 17GH, the voltage standing wave ratio of the two ports is relatively small, for example, the voltage standing wave ratio can reach 1.4 or less at 15GHz, and the reflected signal is relatively small and the energy loss is relatively small. Fig. 18 is a parametric graph of Gain (Gain) radiated by the dual-polarized antenna, and it can be seen from fig. 18 that the Gain is above 9dBi when applied between frequencies 14GHz-17GH, for example, the Gain reaches about 13dBi when applied at 15GHz, with a large boost. Fig. 19 is a parameter diagram of the antenna efficiency, and it can be seen from fig. 19 that the radiation efficiency is above 63% when applied between 14GHz-17GH, for example, the radiation efficiency is over 75% when applied at 15 GHz. As for the antenna patterns, see fig. 20 and 21, fig. 20 and 21 are different directional patterns. As can be seen from fig. 20 and 21, the actual Gain (real Gain) can reach 12.5dBi in the main lobe direction, and the actual Gain in the side lobe direction is small, for example, -10 dBi.

The evaluation was performed for the dual polarized antenna shown in fig. 16 described above. The measurement results are shown in fig. 22, when the antenna is applied to the frequency between 13.5GHz and 16.5GH, the gain of the antenna can be close to 15 dBi; the actual measurement result shows that when the antenna is applied to the frequency of 13.5GHz-16.5GH, the gain of the antenna can reach more than 11dBi, and the gain is high.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A dual polarized antenna, comprising: the antenna comprises a plurality of first super-meter units, a first substrate, at least one first radiating unit, a dielectric filling layer, at least one second radiating unit, a second substrate, a first metal ground, a third substrate, a feeder line and an antenna feed point;

the first super-surface units are distributed on the first surface of the first substrate, the first radiation units are distributed on the second surface of the first substrate, the second radiation units are distributed on the first surface of the second substrate, the number of the second radiation units is the same as that of the first radiation units, the middle point of the second radiation unit is opposite to the middle point of the corresponding first radiation unit, the space between the second radiation unit and the first radiation unit is filled by the medium filling layer, a first surface of the first metal ground is attached to a second surface of the second substrate, a second surface of the first metal ground is attached to a first surface of the third substrate, the feeder line is attached to the second surface of the third substrate, each first radiating element is connected with the feeder line through a metal through hole, and the feeder line is connected with the antenna feed point.

2. The antenna of claim 1, further comprising: and the second super-meter units are distributed on the second surface of the first substrate and around the first radiation unit, and the midpoints of the second super-meter units are opposite to the corresponding midpoints of the first super-meter units.

3. An antenna according to claim 2, wherein the antenna feed point is provided on the first surface of the second substrate, the antenna feed point being connected to the feed line by a metal via.

4. The antenna of any one of claims 1 to 3, further comprising: the first surface of the fourth substrate is attached to the feeder line, and the second surface of the fourth substrate is attached to the first surface of the second metal ground.

5. The antenna of claim 4, wherein the antenna feed points are distributed on the second surface of the fourth substrate and are connected to the feed lines by metal vias.

6. The antenna of claim 5, wherein the first super cell is an X-shaped structure.

7. The antenna of claim 6, wherein the second wristwatch unit is a structural unit having a square slot.

8. The antenna of claim 7, wherein the second radiating element is a corner-cut structural element or a structural element with a cross-shaped slot.

9. The antenna of claim 7, wherein the first substrate, the second substrate, the third substrate, and the fourth substrate are made of flexible materials.

10. An antenna according to any of claims 1 to 3, wherein the filler of the dielectric filling layer is air.