CN118232002A - Antenna components and electronic devices - Google Patents

Abstract

The application provides an antenna assembly and electronic equipment. In the antenna assembly, a first radiator is grounded through a first grounding end, a first signal source is connected with a first connecting end of the first radiator, the first radiator is used for receiving and transmitting electromagnetic wave signals of a first frequency band, a second radiator comprises a coupling end, an extending end, a second grounding end and a second connecting end, the coupling end is opposite to and mutually coupled with the end, close to the first connecting end, of the first radiator, the second signal source is connected with the second connecting end of the second radiator, a first sub radiator is formed in an area between the second grounding end and the second connecting end, the first sub radiator is used for receiving and transmitting electromagnetic wave signals of a second frequency band, and when the frequency of the second frequency band is higher than that of the first frequency band, the second grounding end is grounded through a capacitor. Therefore, when the antenna assembly works, the current of the first radiator coupled to the second radiator and the current of the first radiator are always in the same direction, so that the performance of the whole antenna assembly is improved.

Description

Antenna components and electronic devices

Technical Field

The present application belongs to the field of communication technology, and in particular, relates to an antenna assembly and an electronic device.

Background technique

With the development of computers and the increasing popularity of electronic devices, people are increasingly dependent on electronic devices with communication functions in their daily lives, which leads to higher demands for communication functions of electronic devices. Devices need to support not only more and more communication frequency bands, but also wider antenna bandwidths. However, the communication performance of antenna components in current electronic devices is not good and there is still room for improvement.

Summary of the invention

The embodiments of the present application provide a radio frequency system and a communication device to improve antenna performance.

In a first aspect, an embodiment of the present application provides an antenna assembly, the antenna assembly comprising:

A first radiator, the first radiator comprising a first grounding terminal, the first grounding terminal being grounded;

a first signal source connected to a first connection end of the first radiator and configured to feed a first excitation signal to the first radiator so that the first radiator is used to transmit and receive electromagnetic wave signals in a first frequency band;

a second radiator, the second radiator comprising a coupling end, an extension end, a second grounding end and a second connecting end, the coupling end being opposite to and coupled to an end of the first radiator close to the first connecting end, the second grounding end being arranged between the coupling end and the extension end, the second connecting end being arranged between the second grounding end and the extension end, and the area between the second grounding end and the second connecting end constituting a first sub-radiator;

a second signal source, the second signal source being connected to the second connection end and being used for feeding a second excitation signal to the first sub-radiator, so that the first sub-radiator is used for transmitting and receiving electromagnetic wave signals in a second frequency band;

When the frequency of the second frequency band is higher than the frequency of the first frequency band, the second ground terminal is grounded through a capacitor.

In a second aspect, an embodiment of the present application provides an electronic device, wherein the electronic device includes the antenna assembly as described in the first aspect above.

It can be seen that in the embodiment of the present application, when the frequency of the second frequency band is higher than the frequency of the first frequency band, the second ground terminal in the second radiator is grounded through a capacitor, so that when the antenna assembly is working, the current coupled from the first radiator to the second radiator is always in the same direction as the current of the first radiator, thereby ensuring that the performance of the first radiator will not be significantly affected by the working frequency band of the first sub-radiator, thereby ensuring the antenna performance of the first radiator and improving the performance of the entire antenna assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of an antenna assembly provided in an embodiment of the present application;

FIG2 is a schematic diagram of another antenna assembly provided in an embodiment of the present application;

FIG3 is a schematic diagram of the structure of a regulating circuit provided in an embodiment of the present application;

FIG4 is a schematic diagram of the structure of another regulating circuit provided in an embodiment of the present application;

FIG5 is a schematic diagram of another antenna assembly provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a matching circuit provided in an embodiment of the present application;

7 to 14 are schematic diagrams of matching sub-circuits provided in embodiments of the present application;

FIG15 is a schematic diagram of another antenna assembly provided in an embodiment of the present application;

FIG16 is a schematic diagram of another antenna assembly provided in an embodiment of the present application;

17 to 21 are schematic diagrams of current distribution provided in embodiments of the present application;

FIG22 is a schematic diagram of radiation efficiency provided in an embodiment of the present application;

FIG23 is another schematic diagram of radiation efficiency provided in an embodiment of the present application;

24-26 are schematic diagrams showing the position of the radiator in the antenna assembly in the electronic device according to the embodiment of the present application.

Specific implementation method

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

Please refer to FIG. 1 , which is a schematic diagram of an antenna assembly provided in an embodiment of the present application. The antenna assembly 10 includes a first radiator 111, the first radiator 111 includes a first grounding terminal 114, the first grounding terminal 114 is grounded; a first signal source 113, the first signal source 113 is connected to the first connecting terminal 112 of the first radiator 111, and is used to feed a first excitation signal to the first radiator 111, so that the first radiator 111 is used to transmit and receive electromagnetic wave signals in a first frequency band; a second radiator 121, the second radiator 121 includes a coupling terminal 127, an extension terminal 128, a second grounding terminal 123 and a second connecting terminal 124, the coupling terminal 127 is opposite to the end of the first radiator 111 close to the first connecting terminal 112 and is mutually Coupling, the second grounding terminal 123 is arranged between the coupling terminal 127 and the extension terminal 128, the second connecting terminal 124 is arranged between the second grounding terminal 123 and the extension terminal 128, and the area between the second grounding terminal 123 and the second connecting terminal 124 constitutes the first sub-radiator 122; a second signal source 125, the second signal source 125 is connected to the second connecting terminal 124, and is used to feed a second excitation signal to the first sub-radiator 122, so that the first sub-radiator 122 is used to send and receive electromagnetic wave signals in a second frequency band; when the frequency of the second frequency band is higher than the frequency of the first frequency band, the second grounding terminal 123 is grounded through a capacitor 1261.

Among them, the first radiator 111 can be a flexible printed circuit (FPC) antenna radiator, a laser direct structuring (LDS) antenna radiator, a print direct structuring (PDS) antenna radiator, or a metal branch. Correspondingly, the second radiator 121 can be an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. It can be understood that the types of the first radiator 111 and the second radiator 121 can be the same or different. In particular, the second ground terminal 123 and the second signal source 125 of the second radiator divide the second radiator 121 into two sub-radiators, so that the second radiator can operate in different frequency bands according to the two sub-radiators.

The first signal source 113 and the second signal source 125 refer to devices that can be used to generate an excitation signal (radio frequency signal). Specifically, the first signal source 113 can generate a first excitation signal, which is loaded onto the first radiator 111 so that the first radiator 111 radiates an electromagnetic wave signal according to the first excitation signal. The second signal source 125 can generate a second excitation signal, which is loaded onto the first sub-radiator 122 so that the first sub-radiator 122 radiates an electromagnetic wave signal according to the second excitation signal.

When the antenna assembly is working, the first radiator may work at a lower frequency than the first sub-radiator, that is, the frequency of the second frequency band is higher than the frequency of the first frequency band. At this time, if the second grounding terminal of the second radiator is directly grounded, the direction of the current coupled from the first radiator to the first sub-radiator will be opposite to the direction of the current on the first radiator, thereby deteriorating the performance of the first radiator. Therefore, in this solution, when the first radiator works at a lower frequency than the first sub-radiator, the second grounding terminal of the second radiator is grounded through a capacitor, so that the current coupled from the first radiator to the first sub-radiator at this time can maintain the same direction as the current of the first radiator, thereby ensuring the performance of the first radiator.

It can be seen that in this example, when the frequency of the second frequency band is higher than the frequency of the first frequency band, the second ground terminal in the second radiator is grounded through a capacitor, so that when the antenna assembly is working, the current coupled from the first radiator to the second radiator is always in the same direction as the current of the first radiator, thereby ensuring that the performance of the first radiator will not be significantly affected by the working frequency band of the first sub-radiator, thereby ensuring the antenna performance of the first radiator and improving the performance of the entire antenna assembly.

In a possible example, the frequency range to which the second frequency band belongs includes the frequency range to which the first frequency band belongs.

Among them, the first frequency band can be any frequency band in the first frequency range, and the second frequency band can also be any frequency band in the second frequency range, the first frequency range is the frequency range to which the first frequency band belongs, and the second frequency range is the frequency range to which the second frequency band belongs. For example, the first radiator can operate on multiple frequency bands, including frequency band f0, and the first sub-radiator can also operate on multiple frequency bands, including f1 and f2 respectively, where: f1<f0<f2. At this time, the operating frequency of the first sub-radiator may be higher than the operating frequency of the first radiator, or it may not be higher than the operating frequency of the first radiator. Therefore, please refer to Figure 2, which is a schematic diagram of another antenna assembly provided in an embodiment of the present application.

The antenna assembly 10 includes an adjustment circuit 126, and the adjustment circuit 126 includes a first switch 1262 and a capacitor 1261. The first end of the capacitor 1261 is connected to the second ground terminal 123 through the first switch 1262, and the second end of the capacitor 1261 is grounded; the first switch 1262 is used to select a path between the second ground terminal 123 and the capacitor 1261 when the frequency of the second frequency band is higher than the frequency of the first frequency band.

Please refer to Figure 3, which is a schematic diagram of the structure of a regulation circuit provided in an embodiment of the present application. The regulation circuit 126 also includes an inductor 1263, a first end of the inductor 1263 is connected to the second ground end through the first switch 1262, and a second end of the inductor 1263 is grounded; the first switch 1262 is used to select a path between the second ground end and the inductor 1263 when the frequency of the second frequency band is not higher than the frequency of the first frequency band.

Please refer to Figure 4, which is a schematic diagram of the structure of another regulating circuit provided in an embodiment of the present application. The first switch 1262 is grounded; when the frequency of the second frequency band is not higher than the frequency of the first frequency band, the first switch 1262 is closed to ground the second ground terminal.

In particular, after the first switch is closed, the second ground terminal is directly grounded, which is equivalent to the resistance between the first switch and the ground being zero ohm. Therefore, the first switch can also be connected to a zero ohm resistor. At this time, the first switch is used to select a path between the second ground terminal and the zero ohm resistor when the frequency of the second frequency band is not higher than the frequency of the first frequency band.

Among them, the first switch 1262 can be a radio frequency switch, such as an SPDT switch, which can be specifically determined according to the actual required frequency band data, for example, FIG. 3 and FIG. 4 show an SP2T switch. The connection mode of the first switch can be that the first end of the first switch is connected to the second ground terminal, the second end of the first switch is connected to the capacitor and the inductor, or the second end of the first switch is connected to the capacitor and the ground, or the second end of the first switch is connected to the capacitor and the zero ohm resistor. The connection mode of the first switch can also be that the first end of the first switch is grounded, the second end of the first switch is connected to the capacitor and the inductor, or the second end of the first switch is connected to the capacitor and the ground, or the second end of the first switch is connected to the capacitor and the zero ohm resistor. At this time, the first switch is used to select the path between the capacitor and the ground when the frequency of the second frequency band is higher than the frequency of the first frequency band, and is used to select the path between the inductor and the ground when the frequency of the second frequency band is not higher than the frequency of the first frequency band, or directly ground the second ground terminal through the first switch, or select the path between the zero ohm resistor and the ground.

It can be seen that when the frequency of the first frequency band is lower than the frequency of the second frequency band, the first switch can be used to conduct the path between the second ground terminal and the capacitor, so that the second radiator is grounded through the capacitor. When the frequency of the first frequency band is not lower than the frequency of the second frequency band, the first switch can be used to conduct the path between the second ground terminal and the inductor, so that the second radiator is grounded through the inductor, or directly grounded through the switch, that is, the resistance between the switch and the ground is zero ohm at this time. In this way, no matter what frequency band the first radiator and the first sub-radiator work in, the direction of the current coupled from the first radiator to the first sub-radiator is the same as the current of the first radiator.

Please refer to FIG. 5 , which is a schematic diagram of another antenna assembly provided in an embodiment of the present application. The antenna assembly 10 includes a first matching circuit 129 , and the second signal source 125 is connected to the second connection terminal 124 through the first matching circuit 129 .

When the first sub-radiator is working, the first matching circuit can be adjusted by setting parameters, so that the first sub-radiator can realize different resonance modes to work in different frequency bands.

Please refer to Figure 6, which is a schematic diagram of the structure of a matching circuit provided in an embodiment of the present application. The first matching circuit 129 includes a second switch 1291 and a plurality of matching sub-circuits 1292; the plurality of matching sub-circuits 1292 are connected in parallel and are respectively connected to the second switch 1291 and the second signal source; the second switch 1291 is used to select a path between any one of the plurality of matching sub-circuits 1292 and the second signal source, so that the first sub-radiator is used to transmit and receive electromagnetic wave signals of a frequency band corresponding to any one of the matching sub-circuits 1292.

Among them, the second switch can be a radio frequency switch, such as an SPDT switch, which can be specifically determined according to the actual required frequency band data. The matching subcircuit includes at least one inductor and at least one capacitor. Among them, the structures of each matching subcircuit included in the antenna assembly can be completely or partially the same or different. The structures of multiple matching subcircuits included in the matching circuit can be the same structure or different structures. The different structures in this solution can be completely different or partially different, and the different structures refer to the different numbers and/or connection relationships of the inductors and capacitors included in the tuning subcircuit.

Please refer to Figures 7 to 14 together. Figures 7 to 14 are schematic diagrams of the matching sub-circuit provided in the embodiments of the present application.

Please refer to FIG. 7 . In FIG. 7 , the matching sub-circuit 1292 includes a circuit formed by connecting the inductor L0 and the capacitor C0 in series.

Please refer to FIG. 8 . In FIG. 8 , the matching sub-circuit 1292 includes a circuit formed by connecting an inductor L0 and a capacitor C0 in parallel.

Please refer to Fig. 9, in which the matching sub-circuit 1292 includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in parallel with the first capacitor C1, and the second capacitor C2 is electrically connected to a node where the inductor L0 and the first capacitor C1 are electrically connected.

Please refer to Fig. 10 , in which the matching subcircuit 1292 includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in parallel with the first inductor L1, and the second inductor L2 is electrically connected to a node where the capacitor C0 and the first inductor L1 are electrically connected.

Please refer to FIG. 11 , in which the matching subcircuit 1292 includes an inductor L0, a first capacitor C1, and a second capacitor C2. The inductor L0 is connected in series with the first capacitor C1, and one end of the second capacitor C2 is electrically connected to the first end of the inductor L0 that is not connected to the first capacitor C1, and the other end of the second capacitor C2 is electrically connected to the end of the first capacitor C1 that is not connected to the inductor L0.

Please refer to FIG. 12 , in which the matching subcircuit 1292 includes a capacitor C0, a first inductor L1, and a second inductor L2. The capacitor C0 is connected in series with the first inductor L1, one end of the second inductor L2 is electrically connected to an end of the capacitor C0 that is not connected to the first inductor L1, and the other end of the second inductor L2 is electrically connected to an end of the first inductor L1 that is not connected to the capacitor C0.

Please refer to FIG. 13 , in which the matching subcircuit 1292 includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 is connected in parallel with the first inductor L1, the second capacitor C2 is connected in parallel with the second inductor L2, and one end of the whole formed by the second capacitor C2 and the second inductor L2 in parallel is electrically connected to one end of the whole formed by the first capacitor C1 and the first inductor L1 in parallel.

Please refer to FIG. 14 , in which the matching subcircuit 1292 includes a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The first capacitor C1 and the first inductor L1 are connected in series to form a first unit 1292a, the second capacitor C2 and the second inductor L2 are connected in series to form a second unit 1292b, and the first unit 1292a and the second unit 1292b are connected in parallel.

The structure of the matching subcircuit 1292 shown in Figures 7 to 14 is only an example, and may include a combination of more components, which are not listed here one by one. Through the matching subcircuit, not only can the passband and stopband circuit form be determined according to actual needs to adjust the resonance, but also the frequency selection filter can be used to improve the isolation between the two signal source ports.

Please refer to FIG15 , which is a schematic diagram of another antenna assembly provided in an embodiment of the present application. The antenna assembly 10 further includes a second matching circuit 115 , and the first signal source 113 is connected to the first connection terminal 112 via the second matching circuit 115 .

The second matching circuit may also include at least one matching subcircuit, which has the same structure as the matching subcircuit in the first matching circuit and is not described in detail here. The resonant mode of the first radiator may be adjusted by the second matching circuit so that the first radiator can operate in different frequency bands.

Please refer to Figure 16, which is a schematic diagram of another antenna assembly provided in an embodiment of the present application. The antenna assembly 10 further includes a third signal source 130; the third signal source 130 is connected to the third connection terminal 131 of the second radiator 121, and is used to feed a third excitation signal to the second sub-radiator 120, so that the second sub-radiator 120 is used to transmit and receive electromagnetic wave signals in three frequency bands, the third connection terminal 131 is arranged between the coupling terminal 127 and the second ground terminal 123, and the second sub-radiator 120 is the area between the third connection terminal 131 and the second ground terminal 123.

Among them, the second ground terminal, the third ground terminal and the second signal source divide the second radiator into two sub-radiators, that is, the area from the third connection terminal of the second radiator to the second ground terminal constitutes the second sub-radiator, and the area from the second ground terminal to the second connection terminal constitutes the first sub-radiator. The antenna assembly can operate at different frequency bands according to the first sub-radiator and the second sub-radiator. The antenna assembly 10 can also include a third matching circuit, and the third signal source is connected to the third connection terminal through the third matching circuit, so that the second sub-radiator realizes different resonance modes according to the third matching circuit, so that the second sub-radiator can operate in different frequency bands. The structure of the third matching circuit can be the same as that of the first matching circuit, which will not be repeated here.

For example, as shown in Figures 17 to 21, Figures 17 to 21 are current distribution schematic diagrams provided by embodiments of the present application, and the dotted line portion in the figure is the current direction of the first radiator. It can be seen that in Figures 17 and 18, when the operating frequency of the first sub-radiator is higher than the operating frequency of the first radiator, and the second radiator is directly grounded through the second grounding terminal, the current direction of the first radiator coupled to the first sub-radiator is opposite to the current direction of the first radiator. As shown in Figure 19, when the second grounding terminal of the second radiator is grounded through the adjustment circuit, at this time, it can be selected according to the frequency of the first frequency band and the frequency of the second frequency band whether to ground through a capacitor, directly through the first switch or through an inductor, so that the direction of the current coupled from the first radiator to the first sub-radiator is the same as the current of the first radiator.

For example, if the first radiator works at 1.6GHz and the first sub-radiator works at 1.7GHz, the frequency range of the first frequency band is not higher than the frequency range of the second frequency band. If the regulating circuit includes an inductor, the first switch can be used to select the path between the inductor and the second ground terminal. If the first switch in the regulating circuit can be directly grounded or includes a zero-ohm resistor, the first switch is closed so that the first switch is directly grounded or grounded through a zero-ohm resistor. The current distribution of the first radiator at this time can refer to that shown in FIG20. If the first radiator works at 2.4GHz and the first sub-radiator works at 1.7GHz, the frequency range of the first frequency band is higher than the frequency range of the second frequency band. The first switch needs to be used to conduct the path between the capacitor and the second ground terminal so that the second ground terminal is grounded through the capacitor. The current distribution of the first radiator at this time can refer to that shown in FIG21. Therefore, as shown in FIG19, no matter which frequency band the first radiator and the first sub-radiator work at, it can be ensured that the direction of the current coupled from the first radiator to the first sub-radiator is the same as the current of the first radiator, thereby ensuring the performance of the first radiator.

Please refer to Figure 22, which is a schematic diagram of radiation efficiency provided by an embodiment of the present application. When the frequency of the second frequency band is higher than the frequency of the first frequency band, curve 1 in the figure represents the radiation efficiency of the first radiator after the second grounding end is grounded through a capacitor, curve 2 represents the radiation efficiency of the first radiator when the second grounding end is not grounded through a capacitor in this case, curve 3 represents the total efficiency of the first radiator after the second grounding end is grounded through a capacitor, and curve 4 represents the total efficiency of the first radiator when the second grounding end is not grounded through a capacitor. Please refer to Figure 23, which is another schematic diagram of radiation efficiency provided by an embodiment of the present application. When the frequency of the second frequency band is higher than the frequency of the first frequency band, curve 1 in the figure represents the radiation efficiency of the first sub-radiator after the second grounding end is grounded through a capacitor, curve 2 represents the radiation efficiency of the first sub-radiator when the second grounding end is not grounded through a capacitor in this case, curve 3 represents the radiation efficiency of the first radiator after the second grounding end is grounded through a capacitor, and curve 4 represents the radiation efficiency of the first radiator when the second grounding end is not grounded through a capacitor. It can be seen that for the same resonant frequency, when the frequency of the second frequency band is higher than that of the first frequency band, the grounding end of the second radiator is grounded through a capacitor, which can significantly improve the radiation efficiency of the first radiator.

Please refer to Figures 24 to 26, which are schematic diagrams of the positions of the radiators in the antenna assembly in the electronic device in the embodiment of the present application. In this embodiment, the electronic device 1 includes a top 1a, and the first radiator 111 and the second radiator 121 are both arranged on the top 1a. The so-called top 1a refers to the part located on the top of the electronic device 1 when it is in use.

The electronic device 1 in this embodiment includes a first side 11, a second side 12, a third side 13, and a fourth side 14 connected in sequence from end to end. The first side 11 and the third side 13 are short sides of the electronic device 1, and the second side 12 and the fourth side 14 are long sides of the electronic device 1. The first side 11 and the third side 13 are opposite and spaced apart, the second side 12 and the fourth side 14 are opposite and spaced apart, the second side 12 is bent and connected to the first side 11 and the third side 13 respectively, and the fourth side 14 is bent and connected to the first side 11 and the third side 13 respectively. The connection between the first side 11 and the second side 12, the connection between the second side 12 and the third side 13, the connection between the third side 13 and the fourth side 14, and the connection between the fourth side 14 and the first side 11 all form corners of the electronic device 1. The first side 11 is the top side, the second side 12 is the right side, the third side 13 is the bottom side, and the fourth side 14 is the left side. The angle formed by the first side 11 and the second side 12 is the upper right angle, and the angle formed by the first side 11 and the fourth side 14 is the upper left angle.

The first radiator 111 and the second radiator 121 can be arranged at the top 1a of the electronic device 1, including: the first radiator 111 and the second radiator 121 are arranged at the upper left corner of the electronic device 1; or, as shown in Figure 24, the first radiator 111 and the second radiator 121 are arranged at the top edge of the electronic device 1; or the first radiator 111 and the second radiator 121 are arranged at the upper right corner of the electronic device 1.

When the first radiator 111 and the second radiator 121 are arranged at the upper right corner of the electronic device 1, the following situations are included: as shown in Figure 25, part of the first radiator 111 is located at the top edge, the other part of the first radiator 111 is located at the right side, and the second radiator 121 is located on the right; or, as shown in Figure 26, part of the second radiator 121 is located at the right side, part of the second radiator 121 is located at the top edge, and the entire first radiator 111 is located at the top edge.

Similarly, when the first radiator 111 and the second radiator 121 are arranged at the upper left corner of the electronic device 1, the following situations are included: part of the first radiator 111 is located on the left side, the other part of the first radiator 111 is located on the top side, and the second radiator 121 is located on the left side; or, part of the second radiator 121 is located on the top side, the other part of the second radiator 121 is located on the left side, and the first radiator 111 is located on the top side.

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims (10)

1. An antenna assembly, the antenna assembly comprising:

The first radiator comprises a first grounding end, and the first grounding end is grounded;

The first signal source is connected with the first connecting end of the first radiator and is used for feeding a first excitation signal to the first radiator so that the first radiator is used for receiving and transmitting electromagnetic wave signals of a first frequency band;

The second radiator comprises a coupling end, an extension end, a second grounding end and a second connecting end, wherein the coupling end is opposite to the end, close to the first connecting end, of the first radiator and is mutually coupled, the second grounding end is arranged between the coupling end and the extension end, the second connecting end is arranged between the second grounding end and the extension end, and a region between the second grounding end and the second connecting end forms a first sub radiator;

The second signal source is connected with the second connecting end and is used for feeding a second excitation signal to the first sub-radiator so that the first sub-radiator is used for receiving and transmitting electromagnetic wave signals of a second frequency band;

And when the frequency of the second frequency band is higher than that of the first frequency band, the second grounding end is grounded through a capacitor.

2. The antenna assembly of claim 1, wherein the frequency range to which the second frequency band belongs comprises a frequency range to which the first frequency band belongs.

3. The antenna assembly of claim 2, wherein the antenna assembly comprises a regulating circuit comprising a first switch and the capacitor, a first end of the capacitor being connected to the second ground through the first switch, a second end of the capacitor being grounded;

The first switch is used for selecting and conducting the passage of the second grounding end and the capacitor under the condition that the frequency of the second frequency band is higher than that of the first frequency band.

4. The antenna assembly of claim 3, wherein the adjusting circuit further comprises an inductor, a first end of the inductor being connected to the second ground through the first switch, a second end of the inductor being grounded;

the first switch is used for selecting and conducting the passage of the second grounding terminal and the inductor under the condition that the frequency of the second frequency band is not higher than the frequency of the first frequency band.

5. The antenna assembly of claim 3, wherein the first switch is grounded;

In the case that the frequency of the second frequency band is not higher than the frequency of the first frequency band, the first switch is closed so that the second ground is grounded.

6. The antenna assembly of any one of claims 1-5, wherein the antenna assembly includes a first matching circuit, the second signal source being connected to the second connection terminal through the first matching circuit.

7. The antenna assembly of claim 6, wherein the first matching circuit comprises a second switch and a plurality of matching sub-circuits;

The matching sub-circuits are connected in parallel and are respectively connected with the second switch and the second signal source;

The second switch is used for selecting and conducting the path between any one of the matching sub-circuits and the second signal source, so that the first sub-radiator is used for receiving and transmitting electromagnetic wave signals of the frequency band corresponding to the any one of the matching sub-circuits.

8. The antenna assembly of claim 6, further comprising a second matching circuit, the first signal source being connected to the first connection terminal through the second matching circuit.

9. The antenna assembly of claim 1, further comprising a third signal source;

The third signal source is connected with a third connection end of the second radiator and is used for feeding a third excitation signal into the second sub-radiator so that the second sub-radiator is used for receiving and transmitting electromagnetic wave signals of a third frequency band, the third connection end is arranged between the coupling end and the second grounding end, and the second sub-radiator is an area between the third connection end and the second grounding end.

10. An electronic device comprising an antenna assembly according to any of claims 1-9.