Antennas, antenna arrays, and electronic devices

Abstract

The application provides an antenna, an antenna array and an electronic device. The antenna comprises a radiator and a first coupling branch. The radiator has a first feeding point for receiving a first radio frequency signal, and the radiator works in a first resonant mode according to the first radio frequency signal. The first coupling branch has a second feeding point for receiving a second radio frequency signal, and the first coupling branch is coupled with the radiator to couple the second radio frequency signal to the radiator, and the radiator works in a second resonant mode according to the second radio frequency signal, wherein the second resonant mode is different from the first resonant mode. The antenna provided by the application has good isolation of electromagnetic wave signals transmitted according to the first resonant mode and the second resonant mode.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to an antenna, antenna array, and electronic device. Background Technology

[0002] With technological advancements, mobile phones and other electronic devices with communication capabilities are becoming increasingly widespread and powerful. These devices typically include antennas to enable communication between them and other devices. However, the isolation of antennas in related technologies is often poor, leading to suboptimal communication performance when using antennas for communication. Summary of the Invention

[0003] In a first aspect, this application provides an antenna, the antenna comprising:

[0004] A radiator having a first feed point for receiving a first radio frequency signal, the radiator operating in a first resonant mode according to the first radio frequency signal; and

[0005] A first coupling stub has a second feed point for receiving a second radio frequency signal. The first coupling stub is coupled to the radiator to couple the second radio frequency signal to the radiator. The radiator operates in a second resonant mode according to the second radio frequency signal, wherein the second resonant mode is different from the first resonant mode.

[0006] Secondly, this application provides an antenna array, which includes a plurality of antennas as described in the first aspect, and the plurality of antennas are arranged according to a preset pattern.

[0007] Thirdly, this application provides an electronic device that includes an antenna as described in the first aspect; or, the electronic device includes an antenna array as described in the second aspect.

[0008] The antenna provided in the proposed implementation method directly feeds the first radio frequency signal to the radiator, and couples the second radio frequency signal to the radiator through the coupling between the first coupling stub and the radiator. This excites the first resonant mode and the second resonant mode with different resonant modes, thereby achieving good isolation between the electromagnetic wave signals transmitted and received by the radiator according to the first resonant mode and the electromagnetic wave signals transmitted and received by the radiator according to the second resonant mode. Therefore, the antenna has good communication performance. Attached Figure Description

[0009] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0010] Figure 1 A schematic diagram of an antenna provided according to one embodiment of this application;

[0011] Figure 2 for Figure 1 A schematic diagram of the radiators in the antenna shown;

[0012] Figure 3 This is a schematic diagram of a radiator in an antenna according to another embodiment of this application;

[0013] Figure 4 A schematic diagram of an antenna provided for another embodiment of this application;

[0014] Figure 5 for Figure 2 The diagram shows the direction of the first current generated by the radiator in the antenna during the first resonant mode in the first half-cycle.

[0015] Figure 6 for Figure 5 A schematic diagram of the waveform of the first current in the circuit;

[0016] Figure 7 for Figure 2 The diagram shows the direction of the first current generated by the radiator in the antenna during the second half of the cycle in the first resonant mode.

[0017] Figure 8 for Figure 7 A schematic diagram of the waveform of the first current in the circuit;

[0018] Figure 9 for Figure 1 The diagram shows the direction of the second current generated by the radiator in the antenna during the second resonant mode in the first half of the cycle.

[0019] Figure 10 for Figure 9 A schematic diagram of the waveform of the second current in the circuit;

[0020] Figure 11 for Figure 1 A schematic diagram showing the direction of the second current generated by the radiator in the second resonant mode during the second half of the cycle in the antenna shown.

[0021] Figure 12 for Figure 11 A schematic diagram of the waveform of the second current in the circuit;

[0022] Figure 13 A schematic diagram of an antenna provided for another embodiment of this application;

[0023] Figure 14 for Figure 13 A schematic diagram of the structure of the first coupling stub in the antenna shown;

[0024] Figure 15 for Figure 13 A schematic diagram of the second coupling stub in the antenna shown;

[0025] Figure 16 A schematic diagram of an antenna provided for another embodiment of this application;

[0026] Figure 17 for Figure 16 A schematic diagram of the structure of the first coupling stub in the antenna shown;

[0027] Figure 18 for Figure 16 A schematic diagram of the second coupling stub in the antenna shown;

[0028] Figure 19 A schematic diagram of an antenna provided for yet another embodiment of this application;

[0029] Figure 20 for Figure 19 A schematic diagram of the structure of the first coupling stub in the antenna shown;

[0030] Figure 21 for Figure 19 A schematic diagram of the second coupling stub in the antenna shown;

[0031] Figure 22 A schematic diagram of an antenna provided for yet another embodiment of this application;

[0032] Figure 23 A schematic diagram of an antenna provided for yet another embodiment of this application;

[0033] Figure 24 A schematic diagram of an antenna provided for yet another embodiment of this application;

[0034] Figure 25 A schematic diagram of an antenna provided for yet another embodiment of this application;

[0035] Figure 26 A schematic diagram of an antenna provided for yet another embodiment of this application;

[0036] Figure 27 for Figure 1 The simulation diagram of the antenna shown is shown.

[0037] Figure 28 for Figure 13 The simulation diagram of the antenna shown is shown below;

[0038] Figure 29 for Figure 13 The diagram shows a current simulation of the antenna in the first resonant mode.

[0039] Figure 30 for Figure 13 The diagram shows a current simulation of the antenna in the second resonant mode.

[0040] Figure 31 for Figure 13 The antenna shown is loaded with the first radio frequency signal alone;

[0041] Figure 32 for Figure 13 The antenna shown is loaded with a second radio frequency signal alone;

[0042] Figure 33 for Figure 13 The antenna pattern shown is when the antenna is loaded with a first radio frequency signal and a second radio frequency signal of the same phase.

[0043] Figure 34 for Figure 13 The antenna pattern shown is when the phase of the first radio frequency signal loaded on the antenna is 90° greater than the phase of the second radio frequency signal.

[0044] Figure 35 A schematic diagram of an antenna array provided in one embodiment of this application;

[0045] Figure 36 This is a three-dimensional structural diagram of the electronic device provided in this application according to an embodiment;

[0046] Figure 37 for Figure 36 The cross-sectional view of the electronic equipment provided in the diagram along line II.

[0047] Label Explanation:

[0048] Electronic device 1, antenna array 10, antenna 100, radiator 110, first feed section 111, first radiator 112, second radiator 113, first feed point P1, first radiating stub 112a, first free end 1121, second free end 1131, second radiating stub 113a, connection point CN0, first connection point CN1, second connection point CN2, first coupling stub 120, second feed point P2, second feed section 121, second coupling stub 120 ... The components include: 122, 130, 131, 132, 132, 132, 133, 140, 150, 151, 152, 153, 160, 170, 30, 310, 320, 40, 50, 60, 11a, 11, 1, 2, 3, 4, 50, 60, 11a, 1, 2, 3, 3, 4, 5, 6, 7, 8, 9, 10, 1, 1, 1, 2. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0050] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0051] Please see Figure 1 , Figure 1 This is a schematic diagram of an antenna provided according to an embodiment of this application. The antenna 100 includes a radiator 110 and a first coupling stub 120. The radiator 110 has a first feed point P1 for receiving a first radio frequency (RF) signal, and the radiator 110 operates in a first resonant mode according to the first RF signal. The first coupling stub 120 has a second feed point P2 for receiving a second RF signal. The first coupling stub 120 is coupled to the radiator 110, coupling the second RF signal to the radiator 110. The radiator 110 operates in a second resonant mode according to the second RF signal, wherein the second resonant mode is different from the first resonant mode.

[0052] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0053] The radiator 110 can be, but is not limited to, a flexible printed circuit (FPC) antenna radiator, a laser direct structural (LDS) antenna radiator, a printed direct structural (PDS) antenna radiator, or a metal branch. The shape and length of the radiator 110 shown in the schematic diagram of this embodiment are illustrative. The shape and length of the radiator 110 can be designed according to the electromagnetic wave signals transmitted and received by the radiator 110, as long as the radiator 110 can support the transmission and reception of electromagnetic wave signals in the corresponding frequency band. The shape and length of the radiator 110 shown in this schematic diagram should not be construed as a limitation on the antenna 100 provided in this application embodiment.

[0054] The first coupling stub 120 may be, but is not limited to, a coupling stub formed by a conductive stub in a flexible circuit board, a laser direct forming coupling stub, a printed direct forming coupling stub, or a metal stub.

[0055] The first coupling stub 120 is coupled to the radiator 110, thereby coupling the second radio frequency signal to the radiator 110 through the coupling effect of the first coupling stub 120 and the radiator 110. Specifically, the first coupling stub 120 and the radiator 110 are positioned opposite each other and spaced apart, forming a coupling capacitor. In one embodiment, the gap dimension d between the first coupling stub 120 and the radiator 110 is 0.5mm ≤ d ≤ 2mm. It can be understood that for the antenna 100, the gap dimension d between the first coupling stub 120 and the radiator 110 is selected within the above range to ensure a good coupling effect between the radiator 110 and the first coupling stub 120. It can be understood that in other embodiments, the gap dimension d between the first coupling stub 120 and the radiator 110 may not be within the above range, as long as the first coupling stub 120 and the radiator 110 form a coupling capacitor.

[0056] The so-called resonant mode is also called a resonant mode. The second resonant mode is different from the first resonant mode. Therefore, when the radiator 110 transmits and receives electromagnetic wave signals in the first frequency band according to the first resonant mode, the isolation between the radiator 110 transmitting and receiving electromagnetic wave signals in the second frequency band according to the second resonant mode is good. That is, the interference between the antenna radiator transmitting and receiving electromagnetic wave signals in the first frequency band according to the first resonant mode and the radiator 110 transmitting and receiving electromagnetic wave signals in the second frequency band according to the second resonant mode is small. Specifically, in this embodiment, the radiator 110 transmits and receives electromagnetic wave signals in the first frequency band according to the first resonant mode; the radiator 110 transmits and receives electromagnetic wave signals in the second frequency band according to the second resonant mode. Since the first resonant mode is different from the second resonant mode, the isolation between the radiator 110 transmitting and receiving electromagnetic wave signals in the first frequency band and the radiator 110 transmitting and receiving electromagnetic wave signals in the second frequency band is good. It should be noted that the radiator 110 transmits and receives electromagnetic wave signals in the first frequency band according to the first resonance mode and transmits and receives electromagnetic wave signals in the second frequency band according to the second resonance mode simultaneously.

[0057] Understandably, in one embodiment, the first frequency band and the second frequency band are the same; that is, the antenna radiator transmits and receives electromagnetic wave signals of the same frequency band according to the first resonant mode and the second resonant mode. In other embodiments, the first frequency band and the second frequency band are different; that is, the radiator 110 transmits and receives electromagnetic wave signals of different frequency bands according to the first resonant mode and the second resonant mode. Regardless of whether the first frequency band and the second frequency band are the same, as long as the first resonant mode and the second resonant mode are different, the radiator 110 has a high degree of isolation when transmitting and receiving electromagnetic wave signals of the first frequency band according to the first resonant mode and when transmitting and receiving electromagnetic wave signals of the second frequency band according to the second resonant mode. In the following embodiments, the example of the first frequency band and the second frequency band being the same will be used for explanation. When the radiator 110 transmits and receives electromagnetic wave signals in the first frequency band according to the first resonant mode, and transmits and receives electromagnetic wave signals in the second frequency band according to the second resonant mode, a high-isolation antenna design for two different frequency bands is achieved on one radiator 110, without the need for two antennas to transmit and receive electromagnetic wave signals in the first and second frequency bands. Therefore, the antenna 100 of this application has a relatively compact structure. When the first frequency band and the second frequency band are the same, a high-isolation dual-antenna design for the same frequency band is achieved on one radiator 110, without the need for two antennas to transmit and receive electromagnetic wave signals in the same frequency band. Therefore, the antenna 100 of this application has a relatively compact structure. The antenna 100 provided in this embodiment directly feeds the first radio frequency signal to the radiator 110, and couples the second radio frequency signal to the radiator 110 through the coupling between the first coupling stub 120 and the radiator 110, thereby exciting the first and second resonant modes of the radiator 110 with different resonant modes. This results in better isolation between the electromagnetic wave signals transmitted and received by the radiator 110 according to the first resonant mode and the electromagnetic wave signals transmitted and received by the radiator 110 according to the second resonant mode. Therefore, the antenna 100 has good communication performance.

[0058] In the implementation, the first resonant mode and the second resonant mode support the same frequency band of electromagnetic wave signals, and the first resonant mode includes two quarter-wavelength resonant modes, while the second resonant mode is a half-wavelength resonant mode.

[0059] The first resonant mode and the second resonant mode support the same frequency band of electromagnetic wave signals. Therefore, the first resonant mode and the second resonant mode support the same wavelength of electromagnetic wave signals, denoted as λ0. The first resonant mode includes two quarter-wavelength resonant modes, and the second resonant mode includes a half-wavelength resonant mode. That is, the first resonant mode includes two λ0 / 4 resonant modes, and the second resonant mode includes a λ0 / 2 resonant mode.

[0060] Please refer to the following: Figure 2 , Figure 2 for Figure 1 The diagram shows a schematic of the radiator in the antenna. The radiator 110 includes a first feed section 111, a first radiating section 112, and a second radiating section 113. The first feed point P1 is located at the first feed section 111. The first radiating section 112 is connected to the first feed section 111 and coupled to the first coupling stub 120. The second radiating section 113 is connected to the first feed section 111 and the first radiating section 112. The first radiating section 112 is used to support one of the quarter-wavelength resonant modes, and the second radiating section 113 is used to support another quarter-wavelength resonant mode. The first radiating section 112 and the second radiating section 113 together support the second resonant mode.

[0061] The first feed section 111 is the portion of the radiator 110 that feeds in the first radio frequency signal. The first feed section 111 is straight, or similar to a straight section, or has other shapes, such as wavy. In this embodiment, the shape of the first feed section 111 is not limited. The first feed point P1 is located on the first feed section 111, and the first feed point P1 is used to receive the first radio frequency signal.

[0062] In the schematic diagram of this embodiment, the shapes of the first radiating part 112 and the second radiating part 113 are illustrated as straight strips. It can be understood that in other embodiments, the shapes of the first radiating part 112 and the second radiating part 113 can also be other shapes, for example, the first radiating part 112 and the second radiating part 113 may have multiple connected radiating branches. The shapes of the first radiating part 112 and the second radiating part 113 shown in this embodiment should not be construed as a limitation on the radiator 110 provided in this application embodiment. The first radiating part 112 is connected to the first feed part 111; therefore, the first radio frequency signal can be transmitted to the first radiating part 112 via the first feed part 111. The second radiating part 113 is connected to the first feed part 111; therefore, the first radio frequency signal can be transmitted to the second radiating part 113 via the first feed part 111. The second radiating part 113 is also connected to the first radiating part 112; therefore, the current of the first radio frequency signal can flow in the first radiating part 112 and the second radiating part 113. In this embodiment, the first radiating part 112 is bent and connected to the first feeding part 111, and the second radiating part 113 is bent and connected to the first feeding part 111. In this embodiment, the extending directions of the first radiating part 112 and the second radiating part 113 are on the same straight line. The extending direction of the first radiating part 112 is defined as the direction from which one end of the first radiating part 112 connects to the first feeding part 111 towards the end of the first radiating part 112 away from the first feeding part 111, and is denoted as the first direction D1. If the extending direction of the second radiating part 113 is defined as the direction from which one end of the second radiating part 113 connects to the first feeding part 111 towards the end of the second radiating part 113 away from the first feeding part 111, then the extending direction of the second radiating part 113 is opposite to the first direction D1. Of course, if the direction from which the end of the second radiating portion 113 away from the first feeding portion 111 points to the end of the second radiating portion 113 adjacent to the first feeding portion 111 is taken as the extension direction of the second radiating portion 113, then the extension direction of the second radiating portion 113 is the same as the extension direction of the first radiating portion 112. In this embodiment and the following embodiments, the extension direction of the second radiating portion 113 is described as an example; in other words, in this embodiment and the following embodiments, the extension direction of the second radiating portion 113 is the same as that of the first radiating portion 112. In this embodiment, the first direction D1 is perpendicular to the second direction D2, and the extension direction of the first feeding portion 111 is denoted as the second direction D2.Understandably, in other embodiments, the extending directions of the first radiating portion 112 and the second radiating portion 113 may not be the same. Alternatively, in other embodiments, even if the extending directions of the first radiating portion 112 and the second radiating portion 113 are the same, the first direction D1 may not be perpendicular to the second direction D2.

[0063] In this embodiment, the second radiating section 113 and the first radiating section 112 are symmetrical about the first feeding section 111. See also... Figure 2 Taking the center line of the first power supply section 111 as L1 as an example, the first radiating section 112 and the second radiating section 113 are symmetrical about the center line L1.

[0064] When the second radiating part 113 and the first radiating part 112 are symmetrical about the first feeding part 111, the radiator 110 has good isolation when transmitting and receiving electromagnetic wave signals in the first frequency band and when transmitting and receiving electromagnetic wave signals in the second frequency band. Please refer to Figure 2 , Figure 2 In the process, both the first radiating part 112 and the second radiating part 113 include a radiating branch.

[0065] Please refer to the following: Figure 3 , Figure 3 This is a schematic diagram of the radiator in an antenna according to another embodiment of this application. Figure 3 In the first radiating part 112, there are two bent and connected first radiating branches 112a. Correspondingly, the second radiating part 113 is symmetrical to the first radiating part 112 about the first feeding part 111, that is, the second radiating part 113 also includes bent and connected second radiating branches 113a.

[0066] Understandably, Figure 2 and Figure 3 The radiator 110 in the antenna 100 shown is a symmetrical embodiment of the first radiating part 112 and the second radiating part 113 about the first feed part 111. The structure of the radiator 110 can also be other forms, as long as the first radiating part 112 and the second radiating part 113 are symmetrical about the first feed part 111.

[0067] Please see Figure 4 , Figure 4This is a schematic diagram of an antenna provided according to another embodiment of this application. The second radiating part 113 and the first radiating part 112 are asymmetrical with respect to the first feed part 111. Taking the center line of the first feed part 111 as L1 as an example, the first radiating part 112 and the second radiating part 113 are asymmetrical with respect to the center line L1. In the schematic diagram of this embodiment, the length of the first radiating part 112 is greater than the length of the second radiating part 113 as an example. It can be understood that in other embodiments, the length of the first radiating part 112 may also be less than the length of the second radiating part 113. When the second radiating part 113 and the first radiating part 112 are asymmetrical with respect to the first feed part 111, the antenna 100 further includes at least one of a first matching circuit M1 and a second matching circuit M2. When the antenna 110 includes the first matching circuit M1, the first matching circuit M1 is electrically connected to the first radiating part 112 and is used to adjust the resonant frequency of the first radiating part 112 to be equal to a preset frequency. When the antenna 110 includes the second matching circuit M2, the second matching circuit M2 is electrically connected to the second radiating part 113, and is used to adjust the resonant frequency of the second radiating part 113 to be equal to a preset frequency, wherein the preset frequency is the resonant frequency of the second radiating part 113 and the first radiating part 112 when they are symmetrical about the first feed part 111. In the schematic diagram of this embodiment, the antenna 100 including the first matching circuit M1 and the second matching circuit M2 is used as an example for illustration.

[0068] When the second radiating element 113 is asymmetrical with the first radiating element 112, the first radiating element 112 will still support one quarter-wavelength resonant mode, and the second radiating element 113 will also support another quarter-wavelength resonant mode. However, compared to when the second radiating element 113 is symmetrical with the first radiating element 112, when the second radiating element 113 is asymmetrical with the first radiating element 112, the resonant frequency of the electromagnetic wave signal supported by the first radiating element 112 will deviate from the resonant frequency of the electromagnetic wave signal supported by the second radiating element 113. This results in a slightly worse isolation between the radiator 110 transmitting and receiving electromagnetic wave signals according to the first resonant mode and the radiator 110 transmitting and receiving electromagnetic wave signals according to the second resonant mode. For example, when the first radiating element 112 and the second radiating element 113 are symmetrical, the resonant frequency of both the first radiating element 112 and the second radiating element 113 is f1. However, when the second radiating part 113 is asymmetrical with the first radiating part 112, the resonant frequency of the electromagnetic wave signal supported by the first radiating part 112 is f1 + Δf1, where f1 + Δf1 > f1; correspondingly, the resonant frequency of the electromagnetic wave signal supported by the second radiating part 113 is f1 - Δf2, where f1 - Δf2 < f1. It should be noted that Δf1 describes the difference between the first radiating part 112 and the resonant frequency f1. When the second radiating part 113 is asymmetrical with the first radiating part 112, the resonant frequency of the electromagnetic wave signal supported by the first radiating part 112 is f1 + Δf1, indicating that when the second radiating part 113 is asymmetrical with the first radiating part 112, the resonant frequency of the electromagnetic wave signal supported by the first radiating part 112 has shifted compared to the resonant frequency when the second radiating part 113 and the first radiating part 112 are symmetrical. Accordingly, Δf2 is used to describe the difference between the second radiating part 113 and the resonant frequency f1. When the second radiating part 113 is asymmetrical with the first radiating part 112, the resonant frequency of the electromagnetic wave signal supported by the second radiating part 113 is f1-Δf2. This indicates that when the second radiating part 113 is asymmetrical with the first radiating part 112, the resonant frequency of the electromagnetic wave signal supported by the second radiating part 113 has shifted compared to the resonant frequency when the second radiating part 113 and the first radiating part 112 are symmetrical.

[0069] When the resonant frequency of the electromagnetic wave signal supported by the first radiating part 112 and the resonant frequency of the electromagnetic wave signal supported by the second radiating part 113 deviate, the isolation between the radiator 110 transmitting and receiving electromagnetic wave signals according to the first resonant mode and the radiator 110 transmitting and receiving electromagnetic wave signals according to the second resonant mode becomes slightly worse. The first matching circuit M1 is electrically connected to the first radiating part 112, adjusting the resonant frequency of the first radiating part 112 to equal a preset frequency f1; the second matching circuit M2 is electrically connected to the second radiating part 113, used to adjust the resonant frequency of the second radiating part 113 to equal a preset frequency f1, wherein the preset frequency f1 is the resonant frequency of the second radiating part 113 and the first radiating part 112 when they are symmetrical about the first feed part 111, thereby making the isolation between the radiator 110 transmitting and receiving electromagnetic wave signals according to the first resonant mode and the radiator 110 transmitting and receiving electromagnetic wave signals according to the second resonant mode better.

[0070] Please refer to the following: Figure 5 , Figure 6 , Figure 7 and Figure 8 , Figure 5 for Figure 2 The diagram shows the direction of the first current generated by the radiator in the antenna during the first resonant mode in the first half-cycle. Figure 6 for Figure 5 A schematic diagram of the waveform of the first current in the circuit; Figure 7 for Figure 2 The diagram shows the direction of the first current generated by the radiator in the antenna during the second half of the cycle in the first resonant mode. Figure 8 for Figure 7 The waveform diagram of the first current in the circuit is shown. It should be noted that... Figure 5 and Figure 7 The first current shown is only a schematic diagram of its flow direction, i.e., a simplified diagram, not a simulation diagram. The simulation diagram will be introduced later. Accordingly, in Figure 6 and Figure 8In this diagram, the magnitude of the first current is only a schematic representation of the first current amplitude, not an actual simulation. Furthermore, it should be noted that the first current includes its direction, magnitude, and phase. The schematic diagram in this embodiment separates the first current direction, magnitude, and phase for a clearer and more convenient illustration of the first current direction, magnitude, and phase in the first and second half-cycles. The radiator 110 has a connection point CN0, and the second radiating part 113 connects the first feed part 111 and the first radiating part 112 at the connection point CN0. The first radiating part 112 has a first free end 1121, and the second radiating part 113 has a second free end 1131. The current generated by the first resonant mode is a periodically oscillating first current I1, the waveform of which is a half-waveform, and the first current includes a first sub-current I. 11 and the second sub-current I 12 In the first half of a cycle, the current amplitude at the connection point CN0 is the highest, and the first sub-current I... 11 The second sub-current I flows from the connection point CN0 to the first free end 1121. 12 The current flows from the connection point CN0 to the second free end 1131; in the second half of a cycle, the phase of the first current flips by 180°. In other words, the current amplitude at the connection point CN0 is the highest in the second half of a cycle; and the phase of the first current in the second half of a cycle flips by 180° compared to the phase of the first current in the first half of the cycle. In this embodiment, the current amplitudes at the first free end 1121 and the second free end 1131 are 0. It should be noted that the current amplitude at the connection point CN0 is the difference between the current value at the connection point and the current amplitude at the first free end 1121 or the current amplitude at the second free end 1131. Therefore, in the second half of a cycle, the current amplitude at the connection point CN0 is still the highest, not the lowest. In the diagram of the second half of a cycle, the waveform at the connection point CN0 is the lowest, indicating that the phase of the first current in the second half of a cycle flips by 180° compared to the phase of the first current in the first half of the cycle. The first sub-current I 11 The second sub-current I flows from the first free end 1121 to the connection point CN0. 12 It flows from the second free end 1131 to the connection point CN0.

[0071] The connection point CN0 is the location where the first feed section 111, the first radiating section 112, and the second radiating section 113 connect. The first free end 1121 and the end located at connection point CN0 are respectively the two ends of the first radiating section 112. In this embodiment, the first free end 1121 is the end of the first radiating section 112 that faces away from the connection point CN0. Correspondingly, the second free end 1131 and the end located at connection point CN0 are respectively the two ends of the second radiating section 113. In this embodiment, the second free end 1131 is the end of the second radiating section 113 that faces away from the connection point CN0.

[0072] In this embodiment, the waveform of the first current is a half-waveform, therefore, the waveform of the first sub-current is a quarter-waveform, and the waveform of the second sub-current is a quarter-waveform. That is, the first radiating part 112 supports a quarter-wavelength resonant mode, and the second radiating part 113 supports another quarter-wavelength mode.

[0073] Please refer to the following: Figure 9 , Figure 10 , Figure 11 and Figure 12 , Figure 9 for Figure 1 The diagram shows the direction of the second current generated by the radiator in the antenna during the second resonant mode in the first half of the cycle. Figure 10 for Figure 9 A schematic diagram of the waveform of the second current in the circuit; Figure 11 for Figure 1 A schematic diagram showing the direction of the second current generated by the radiator in the second resonant mode during the second half of the cycle in the antenna shown. Figure 12 for Figure 11 The waveform diagram of the second current in the circuit is shown. It should be noted that... Figure 9 and Figure 11 The second current shown is only a schematic diagram of its flow direction; that is, a simplified diagram of the second current flow direction, not a simulation diagram. The simulation diagram will be introduced later. Accordingly, in Figure 10 and Figure 12In this diagram, the magnitude of the second current is only a schematic representation of the second current's amplitude, not an actual simulation. Furthermore, it should be noted that the second current includes both its flow direction and amplitude. The schematic diagram in this embodiment separates the flow direction and amplitude of the second current for a clearer and more convenient illustration of the flow direction and amplitude of the second current in the first and second half of the cycle. The radiator 110 has a connection point CN0. The second radiating part 113 connects the first feed part 111 and the first radiating part 112 at the connection point CN0. The first radiating part 112 has a first free end 1121, and the second radiating part 113 has a second free end 1131. The current generated by the second resonant mode is a periodically oscillating second current I2. The waveform of the second current I2 is a half-waveform. In the first half of a cycle, the current amplitude at the connection point CN0 is the highest, and the second current I2 flows from the first free end 1121 to the second free end 1131. In the second half of a cycle, the phase of the second current flips by 180°. In other words, the current amplitude at connection point CN0 is highest in the latter half of a cycle; and the phase of the second current in the latter half of a cycle is flipped by 180° compared to the phase of the second current in the first half of a cycle. The second current I2 flows from the second free terminal 1131 to the first free terminal 1121. Please continue reading. Figure 1 and Figure 2 The first coupling branch 120 is located within the space formed by the first feed section 111 and the first radiation section 112.

[0074] The first coupling stub 120 provided in this embodiment is located within the space formed by the first feed section 111 and the first radiating section 112, which can make full use of the space between the first feed section 111 and the first radiating section 112, thereby making the structure of the antenna 100 more compact, which is beneficial to the integration and miniaturization design of the antenna 100.

[0075] Understandably, in other embodiments, the first coupling stub 120 may also be located outside the space formed by the first feed section 111 and the first radiating section 112. For example, the first coupling stub 120 may be located on the side of the first radiating section 112 away from the first feed section 111. In this case, the antenna 100 is relatively large, but it is sufficient as long as the first coupling stub 120 is coupled to the first radiating section 112.

[0076] Please refer to the following: Figure 1 , Figure 2 and Figure 13 , Figure 13This is a schematic diagram of an antenna provided according to another embodiment of this application. In this embodiment, the antenna 100 further includes a second coupling stub 130. The second coupling stub 130 can be incorporated into the antenna 100 shown in any of the preceding embodiments. In the antenna 100 provided in this embodiment, the antenna 100 further includes a second coupling stub 130 incorporated into... Figure 1 The antenna 100 shown is illustrated as an example and should not be construed as a limitation on the antenna 100 provided in the embodiments of this application. The antenna 100 also includes a second coupling stub 130. The second coupling stub 130 is coupled to the second radiating portion 113 and is electrically connected to the ground electrode 140.

[0077] The second coupling stub 130 is coupled to the second radiating part 113, and the second coupling stub 130 is electrically connected to the ground electrode 140. This can reduce the waveform distortion of the current generated by the radiator 110 according to the first resonant mode, and also reduce the waveform distortion of the current generated by the radiator 110 according to the second resonant mode. This can improve the isolation between the radiator 110 transmitting and receiving electromagnetic wave signals in the first frequency band according to the first resonant mode and the radiator 110 transmitting and receiving electromagnetic wave signals in the second frequency band.

[0078] Specifically, the setting of the second coupling stub 130 can improve the waveform of the first current generated by the radiator 110 according to the first resonant mode, and improve the waveform of the second current generated by the radiator 110 according to the second resonant mode, thereby improving the isolation between the radiator 110 transmitting and receiving electromagnetic wave signals of the first frequency band according to the first resonant mode and the radiator 110 transmitting and receiving electromagnetic wave signals of the second frequency band according to the second resonant mode.

[0079] Please refer to the following: Figure 1 , Figure 2 , Figure 14 and Figure 15 , Figure 14 for Figure 13 A schematic diagram of the structure of the first coupling stub in the antenna shown; Figure 15 for Figure 13 The diagram shows a second coupling stub in the antenna. The first coupling stub 120 includes a second feed section 121 and a first coupling section 122. The second feed point P2 is located in the second feed section 121. The first coupling section 122 is electrically connected to the second feed section 121, and the first coupling section 122 is spaced apart from and coupled to the first radiating section 112.

[0080] The second coupling stub 130 includes a second coupling portion 131 and a grounding portion 132. The second coupling portion 131 is spaced apart from and coupled to the second radiating portion 113, and the second coupling portion 131 and the first coupling portion 122 are symmetrical about the radiator 110. The grounding portion 132 is connected to the second coupling portion 131 and is electrically connected to the ground electrode 140. Taking the center line of the radiator 110 as an example, the second coupling portion 131 and the first coupling portion 122 are symmetrical about the center line L2 of the radiator 110. In one embodiment, the center line L2 of the radiator 110 coincides with the center line L1 of the preceding first feed portion 111; in other embodiments, the center line L2 of the radiator 110 does not coincide with the center line L1 of the preceding first feed portion 111.

[0081] The second coupling part 131 is symmetrical to the first coupling part 122 about the radiator 110, which can further reduce the waveform distortion of the current generated by the radiator 110 according to the first resonant mode, and further reduce the waveform distortion of the current generated by the radiator 110 according to the second resonant mode. Therefore, the isolation between the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode and the electromagnetic wave signal of the second frequency band transmitted and received by the radiator 110 according to the second resonant mode can be further improved.

[0082] In this embodiment, the connection point between the grounding part 132 and the second coupling part 131 is the first connection point CN1, and the connection point between the second power supply part 121 and the first coupling part 122 is the second connection point CN2. The first connection point CN1 and the second connection point CN2 are symmetrical about the radiator 110.

[0083] In this embodiment, the first connection point CN1 and the second connection point CN2 are symmetrical about the radiator 110, which can further reduce the waveform distortion of the current generated by the radiator 110 according to the first resonant mode, and further reduce the waveform distortion of the current generated by the radiator 110 according to the second resonant mode. Therefore, the isolation between the electromagnetic wave signals of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode and the electromagnetic wave signals of the second frequency band transmitted and received by the radiator 110 according to the second resonant mode can be further improved.

[0084] In this embodiment, the first coupling portion 122 extends along a first direction D1, the second power supply portion 121 extends along a second direction D2, and the second power supply portion 121 is connected to the midpoint of the first coupling portion 122. The second coupling portion 131 extends along the first direction D1, the grounding portion 132 extends along the second direction D2, and the second coupling portion 131 is connected to the midpoint of the grounding portion 132. It should be noted that in this embodiment, the extension direction of the first coupling portion 122 is defined as a direction from one end of the first coupling portion 122 adjacent to the first power supply portion 111 towards the direction away from the first power supply portion 111.

[0085] The second feed section 121 is connected to the midpoint of the first coupling section 122, which makes the current corresponding to the second radio frequency signal transmitted to the first coupling section 122 via the second feed section 121 more uniformly distributed. This makes the current corresponding to the second radio frequency signal coupled to the radiator 110 by the first coupling section 122 more uniformly distributed on the radiator 110, thereby improving the isolation between the electromagnetic wave signal transmitted and received by the radiator 110 when it operates in the second resonant mode according to the second radio frequency signal and the electromagnetic wave signal transmitted and received by the radiator 110 when it operates in the first resonant mode according to the first radio frequency signal.

[0086] Please see Figure 16 , Figure 17 and Figure 18 , Figure 16 A schematic diagram of an antenna provided for another embodiment of this application; Figure 17 for Figure 16 A schematic diagram of the structure of the first coupling stub in the antenna shown; Figure 18 for Figure 16 The diagram shows a schematic of the second coupling stub in the antenna. In this embodiment, the second coupling portion 131 and the first coupling portion 122 are symmetrical about the radiator 110. The first coupling portion 122 extends along a first direction D1, the second feed portion 121 extends along a second direction D2, and the first coupling portion 122 is connected to the end of the second feed portion 121 away from the second coupling stub 130; and the second coupling portion 131 extends along the first direction D1, the ground portion 132 extends along the second direction D2, and the ground portion 132 is connected to the end of the second coupling portion 131 away from the first coupling stub 120. It should be noted that, in this embodiment, the extension direction of the first coupling portion 122 is defined as the direction from the end of the first coupling portion 122 adjacent to the first feed portion 111 towards the direction away from the first feed portion 111.

[0087] The second coupling part 131 is symmetrical to the first coupling part 122 about the radiator 110, which can further reduce the waveform distortion of the current generated by the radiator 110 according to the first resonant mode, and further reduce the waveform distortion of the current generated by the radiator 110 according to the second resonant mode. Therefore, the isolation between the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode and the electromagnetic wave signal of the second frequency band transmitted and received by the radiator 110 according to the second resonant mode can be further improved.

[0088] Please refer to the following: Figure 19 , Figure 20 and Figure 21 , Figure 19 A schematic diagram of an antenna provided for yet another embodiment of this application; Figure 20 for Figure 19 A schematic diagram of the structure of the first coupling stub in the antenna shown; Figure 21 for Figure 19 The diagram shows a second coupling stub in the antenna. The second coupling portion 131 is symmetrical to the first coupling portion 122 about the radiator 110. The first coupling portion 122 extends along a first direction D1, the second feed portion 121 extends along a second direction D2, and the first coupling portion 122 is connected to one end of the first feed portion 111 adjacent to the second coupling stub 130; the second coupling portion 131 extends along the first direction D1, the ground portion 132 extends along the second direction D2, and the ground portion 132 is connected to one end of the second coupling portion 131 adjacent to the first coupling stub 120.

[0089] The second coupling part 131 is symmetrical to the first coupling part 122 about the radiator 110, which can further reduce the waveform distortion of the current generated by the radiator 110 according to the first resonant mode, and further reduce the waveform distortion of the current generated by the radiator 110 according to the second resonant mode. Therefore, the isolation between the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode and the electromagnetic wave signal of the second frequency band transmitted and received by the radiator 110 according to the second resonant mode can be further improved.

[0090] Please refer to the antenna 100 provided in any of the preceding embodiments, wherein the second coupling stub 130 is located within the space formed by the first feed section 111 and the second radiating section 113.

[0091] The second coupling stub 130 is located within the space formed by the first feed section 111 and the second radiating section 113, which can make full use of the space between the first feed section 111 and the second radiating section 113, thereby making the structure of the antenna 100 more compact, which is beneficial to the miniaturization and integration design of the antenna 100.

[0092] Understandably, in other embodiments, the second coupling stub 130 may also be located outside the space formed by the first feed section 111 and the second radiating section 113. For example, the second coupling stub 130 may be located on the side of the second radiating section 113 away from the first feed section 111. In this case, the antenna 100 is relatively large, but it is sufficient as long as the second coupling stub 130 is coupled to the second radiating section 113.

[0093] Please see Figure 22 , Figure 22 This is a schematic diagram of an antenna provided in another embodiment of this application. The antenna 100 provided in this embodiment further includes a splitter 150, which can be incorporated into any of the antennas 100 provided in the preceding embodiments. In this schematic diagram, the antenna 100 including the splitter 150 is illustrated as an example of incorporating the splitter 150 into an antenna 100 provided in a preceding embodiment, and should not be considered a limitation on the antenna 100 provided in this application. In this embodiment, the antenna 100 further includes a splitter 150, which has an input terminal 151, a first output terminal 152, and a second output terminal 153. The input terminal 151 is used to receive the original radio frequency signal, and the splitter 150 is used to split the original radio frequency signal into a first radio frequency signal and a second radio frequency signal. The first output terminal 152 is electrically connected to the first feed point P1 and is used to send the first radio frequency signal to the first feed point P1. The second output terminal 153 is electrically connected to the second feed point P2 and is used to output the second radio frequency signal to the second feed point P2.

[0094] In this embodiment, the input terminal 151 is used to receive the original radio frequency (RF) signal, and the splitter 150 splits the original RF signal into a first RF signal and a second RF signal. That is, in this embodiment, the splitter 150 is used to split the original RF signal with a preset power into a first RF signal with a first sub-power and a second RF signal with a second sub-power, wherein the first sub-power plus the second sub-power equals the preset power. The first sub-power and the second sub-power may be equal or unequal. In one embodiment, the first sub-power equals half of the second sub-power equal to the preset power. The antenna 100 includes the splitter 150; therefore, the original RF signal may come from a single RF chip. The splitter 150 splits the original signal into the first RF signal and the second RF signal, thereby improving the consistency between the first RF signal and the second RF signal, and consequently ensuring that the frequency band of the radiator 110 transmitting and receiving electromagnetic wave signals based on the first RF signal is more consistent with the frequency band of the radiator 110 transmitting and receiving electromagnetic wave signals based on the second RF signal. Furthermore, compared to using two antennas 100 to transmit and receive two electromagnetic wave signals in the same frequency band, the antenna 100 provided by the present invention can transmit and receive two electromagnetic wave signals in the same frequency band using only one radiator 110, and the antenna 100 of the present invention has a smaller volume. In this embodiment, the original radio frequency signal is generated by the feed source S.

[0095] Please see Figure 23 and Figure 24 , Figure 23 A schematic diagram of an antenna provided for yet another embodiment of this application; Figure 24 This is a schematic diagram of an antenna provided for another embodiment of this application. Figure 23 , Figure 24 The antenna 100 provided in the related embodiments and Figure 22 The antenna 100 provided in the relevant embodiments is basically the same as that provided in other embodiments, except that, Figure 23 and Figure 24 In this embodiment, the antenna 100 further includes a phase shifter 160. That is, in this embodiment, the antenna 100 also includes a splitter 150 and a phase shifter 160. Please refer to [link to previous text]. Figure 23 The phase shifter 160 is electrically connected between the first output terminal 152 and the first feed point P1, and is used to shift the phase of the first radio frequency signal and output the phase-shifted first radio frequency signal to the first feed point P1.

[0096] Please see Figure 24The phase shifter 160 is electrically connected between the second output terminal 153 and the second feed point P2, and is used to shift the phase of the second radio frequency signal and output the phase-shifted second radio frequency signal to the second feed point P2.

[0097] The phase shifter 160 can be implemented using a lumped device or a distributed circuit. The antenna 100 provided in this embodiment includes a phase shifter 160, which allows the phases of the first radio frequency signal loaded at the first feed point P1 and the second radio frequency signal loaded at the second feed point P2 to be different. Therefore, compared to an antenna 100 without a phase shifter 160, the radiation pattern of the antenna 100 provided in this embodiment is different, thereby improving the communication effect when using the antenna 100 for communication.

[0098] If the antenna 100 does not include the phase shifter 160, when an electronic device 1 (e.g., a mobile phone) including the antenna 100 communicates with other devices (e.g., Bluetooth headsets or mobile phones), if the radiation pattern of the antenna 100 is oriented towards a first direction (e.g., the right), and the other device is located in a second direction (e.g., the left) of the electronic device 1, then the communication effect between the electronic device 1 and the other device is poor; for example, the communication distance is short. In this embodiment, the antenna 100 includes the phase shifter 160. Therefore, a portion of the radiation pattern of the antenna 100 is oriented towards the first direction, and the other device is located in the first direction of the electronic device 1. Thus, when the electronic device 1 including the antenna 100 communicates with the other device, the communication distance between the electronic device 1 and the other device is a second distance, which is greater than the first distance. That is, the communication effect of the antenna 100 including the phase shifter 160 is better. For example, the first distance may be, but is not limited to, 50m, and the second distance may be, but is not limited to, 100m.

[0099] Furthermore, compared to using two antennas 100 to transmit and receive two electromagnetic wave signals of the same frequency band, and compared to using two antennas 100 to achieve different radiation patterns, the antenna 100 provided by the present application can achieve the transmission and reception of two electromagnetic wave signals of the same frequency band using only one radiator 110. Moreover, the present application uses a phase shifter 160 to allow the electromagnetic wave signals transmitted and received by one antenna 100 to have different radiation patterns. Therefore, the antenna 100 of the present application has a compact structure and a small volume.

[0100] In this embodiment, the phase shifter 160 in the antenna 100 changes the phase of the first radio frequency signal loaded at the first feed point P1 and the second radio frequency signal loaded at the second feed point P2 by a fixed value. That is, the phase difference between the first radio frequency signal loaded at the first feed point P1 and the second radio frequency signal loaded at the second feed point P2 is fixed. Therefore, the radiation pattern in the antenna 100 can be kept constant.

[0101] Please see Figure 25 and Figure 26 , Figure 25 A schematic diagram of an antenna provided for yet another embodiment of this application; Figure 26 This is a schematic diagram of an antenna provided according to yet another embodiment of this application. The antenna 100 provided in this embodiment is... Figure 23 and Figure 24 The antenna 100 provided is basically the same as that in the previous embodiment, except that in this embodiment, the antenna 100 further includes a control chip 170. The control chip 170 is used to generate control signals and is electrically connected to the phase shifter 160. See also... Figure 25 The phase shifter 160 is electrically connected between the first output terminal 152 and the first feed point P1, and the control signal is used to control the phase difference between the first radio frequency signal and the second radio frequency signal after phase shifting.

[0102] Please see Figure 26 The phase shifter 160 is electrically connected between the second output terminal 153 and the second feed point P2, and the control signal is used to control the phase difference between the first radio frequency signal and the phase-shifted second radio frequency signal.

[0103] The control signal can control the phase difference between the phase-shifted first radio frequency (RF) signal and the second RF signal, or control the phase difference between the first RF signal and the phase-shifted second RF signal. That is, the control signal can make the phase difference between the first RF signal applied at the first feed point P1 and the second RF signal applied at the second feed point P2 adjustable, thereby making the radiation pattern of the antenna 100 adjustable and further improving the communication quality of the antenna 100. For example, the control signal adjusts the phase shifter 160, thereby making the phase difference between the first RF signal applied at the first feed point P1 and the second RF signal applied at the second feed point P2 adjustable; therefore, the radiation pattern of the antenna 100 is adjustable. When the electronic device 1 with the antenna 100 communicates with other devices, the control chip 170 records the communication quality (e.g., signal strength, maximum communication distance, etc.) between the electronic device 1 and other devices under the phase difference between the first radio frequency signal and the second radio frequency signal, and then selects an optimal phase difference, wherein the radiation pattern of the antenna 100 is oriented towards the other device under the optimal phase difference, and the communication quality between the electronic device 1 and the other device is the best.

[0104] In this embodiment, the radiation pattern can be switched on the radiator 110 of one antenna 100. Compared with using two or more antennas to switch the radiation pattern, the antenna 100 of this application has a simple and compact structure and a small volume.

[0105] In this embodiment, the antenna 100 further includes a control chip 170, which controls the phase shifter 160, thereby controlling the phase difference between the phase-shifted first radio frequency signal and the second radio frequency signal, so that the radiation pattern of the antenna 100 changes. This allows the radiation pattern of the antenna 100 to be adjusted according to the orientation of other devices, thereby improving the communication quality between the electronic device 1 including the antenna 100 and other devices.

[0106] In this embodiment, when the first frequency band and the second frequency band are the same, the center frequency of the first frequency band can be, but is not limited to, 4.3 GHz, 2.4 GHz, etc. The frequency bands supported by the antenna 100 can be designed according to actual needs.

[0107] The antenna 100 provided in this application will now be described in conjunction with simulation diagrams. Please refer to [link / reference]. Figure 27 , Figure 27 for Figure 1The diagram shows a simulation of the antenna. This diagram illustrates the S-parameters of antenna 100. The horizontal axis represents frequency in GHz, and the vertical axis represents S-parameters in dB. In this embodiment, curve ① represents the S-parameter curve of the first resonant mode corresponding to the first frequency band; curve ② represents the S-parameter curve of the second resonant mode corresponding to the second frequency band. Curve ③ represents the isolation curve between the electromagnetic wave signals of the first and second frequency bands. As can be seen from this simulation diagram, the first and second frequency bands are the same (the center frequency in this embodiment is 4.3 GHz), and the isolation between the first and second frequency bands is relatively good, approximately -10 dB.

[0108] Please see Figure 28 , Figure 28 for Figure 13 The diagram shows a simulation of the antenna. This diagram illustrates the S-parameters of antenna 100. The horizontal axis represents frequency in GHz, and the vertical axis represents S-parameters in dB. In this embodiment, curve ① represents the S-parameter curve of the first resonant mode corresponding to the first frequency band; curve ② represents the S-parameter curve of the second resonant mode corresponding to the second frequency band. Curve ③ represents the isolation curve between the electromagnetic wave signals of the first and second frequency bands. As can be seen from this simulation diagram, the first and second frequency bands are the same (4.3 GHz in this embodiment), and the isolation between the electromagnetic wave signals of the first and second frequency bands is good, approximately -15 dB. Figure 27 and Figure 28 visible, Figure 13 The isolation between the electromagnetic wave signal in the first frequency band and the electromagnetic wave signal in the second frequency band of the antenna 100 provided by the antenna and its related embodiments is approximately -15dB, while... Figure 1 The isolation between the electromagnetic wave signal in the first frequency band and the electromagnetic wave signal in the second frequency band of the antenna 100 provided in the related embodiments is approximately -10dB. Since -15dB < -10dB, the smaller the value of the isolation value, the better the isolation. Figure 13 The isolation between the electromagnetic wave signal in the first frequency band and the electromagnetic wave signal in the second frequency band of the antenna 100 provided by the antenna 100 and its related embodiments is better than Figure 1 The isolation between electromagnetic wave signals in the first frequency band and electromagnetic wave signals in the second frequency band in the antenna 100 provided by the related embodiments. That is, the isolation between electromagnetic wave signals in the first frequency band and electromagnetic wave signals in the second frequency band in the antenna 100 including the second coupling stub 130 is better than the isolation between electromagnetic wave signals in the first frequency band and electromagnetic wave signals in the second frequency band in the antenna 100 excluding the second coupling stub 130.

[0109] Please refer to the following: Figure 29 and Figure 30 , Figure 29 for Figure 13 The diagram shows a current simulation of the antenna in the first resonant mode. Figure 30 for Figure 13 The diagram shows a current simulation of the antenna in its second resonant mode. Figure 29 and Figure 30 As shown in the current simulation diagram, the first resonant mode and the second resonant mode are different. This difference in resonant modes results in better isolation between the electromagnetic wave signals transmitted and received by the radiator 110 according to the first resonant mode and the electromagnetic wave signals transmitted and received by the radiator 110 according to the second resonant mode. Therefore, the antenna 100 exhibits better communication performance.

[0110] Please refer to the following: Figure 31 and Figure 32 , Figure 31 for Figure 13 The antenna shown is loaded with the first radio frequency signal alone; Figure 32 for Figure 13 The antenna shown is the radiation pattern when a second radio frequency signal is applied alone. Figure 31 In the middle, antenna 100 is loaded with a first radio frequency signal but not with a second radio frequency signal; in Figure 32 In the middle, antenna 100 is not loaded with the first radio frequency signal, but with the second radio frequency signal. (By...) Figure 31 and Figure 32 It can be seen that the radiation pattern of antenna 100 when it is loaded with the first radio frequency signal alone is different from the radiation pattern of antenna 100 when it is loaded with the second radio frequency signal alone.

[0111] Please see Figure 33 and Figure 34 , Figure 33 for Figure 13 The antenna shown is a radiation pattern when it is loaded with a first radio frequency signal and a second radio frequency signal of the same phase. Figure 34 for Figure 13 The antenna pattern shown is illustrated when the phase of the first radio frequency signal loaded on the antenna is 90° greater than the phase of the second radio frequency signal. Figure 31 , Figure 32 and Figure 33 visible, Figure 33 The radiation pattern of antenna 100 in the middle and Figure 31 and Figure 32 The orientation patterns are different. (From...) Figure 31 , Figure 32 and Figure 34 visible, Figure 34 The radiation pattern of the middle antenna 100 and Figure 31 and Figure 32 The radiation pattern of the intermediate antenna 100 is different. Furthermore, due to... Figure 33 and Figure 34 visible, Figure 34 The radiation pattern of the middle antenna 100 and Figure 33 The radiation pattern of the middle antenna 100 is different.

[0112] Please see Figure 35 , Figure 35 This is a schematic diagram of an antenna array provided in one embodiment of this application. The antenna array 10 includes a plurality of antennas 100 as described in any of the preceding embodiments, and the plurality of antennas 100 are arranged according to a preset pattern.

[0113] The multiple antennas 100 are arranged according to a preset pattern to form an antenna array 10, which enables the antenna array 10 to have better communication performance. For example, the antenna array 10 can form an N*N Multiple-Input Multiple-Output (MIMO) antenna array 10, where N is a positive integer. For example, the antenna array 10 can form a 4*4 MIMO antenna array.

[0114] In one embodiment, each antenna 100 has a different radiation pattern orientation. The different orientations of the radiation patterns of each antenna 100 allow the antenna array 10 to cover a wider area, thereby improving the communication performance of the antenna array 10.

[0115] Furthermore, different antennas 100 can be deployed according to different application scenarios to form an antenna array 10 suitable for the application scenario, thereby enabling the radiation pattern of the antenna array 10 to cover a wider range and making the antenna array 10 suitable for the application scenario.

[0116] This application also provides an electronic device 1, which includes, but is not limited to, devices with communication functions such as mobile phones, mobile internet devices (MIDs), e-books, portable PlayStation Portable (PSPs), or personal digital assistants (PDAs). Please refer to the following: Figure 36 and Figure 37 , Figure 36 This is a three-dimensional structural diagram of the electronic device provided in this application according to an embodiment; Figure 37 for Figure 36 The electronic device 1 is shown in a cross-sectional view along line II. The electronic device 1 includes the antenna 100 described in any of the preceding embodiments; or, the electronic device 1 includes the antenna array 10 described in any of the preceding embodiments.

[0117] The electronic device 1 also includes a mid-frame 30, a screen 40, a circuit board 50, and a battery cover 60. The mid-frame 30, the screen 40, the circuit board 50, and the battery cover 60 are described in detail below.

[0118] The middle frame 30 is made of metal, such as an aluminum-magnesium alloy. The middle frame 30 typically forms the ground of the electronic device 1. When electronic components in the electronic device 1 need to be grounded, they can be connected to the middle frame 30 for grounding. Furthermore, the ground system in the electronic device 1 includes not only the middle frame 30, but also the ground in the circuit board 50 and the ground in the screen 40. When the second coupling stub 130 in the antenna 100 described above is grounded, the second coupling stub 130 can be electrically connected to any one or more of the grounds in the middle frame 30, the circuit board 50, and the screen 40. In other words, the ground electrode 140 in the antenna 10 described above includes any one or more of the grounds in the middle frame 20, the circuit board 50, and the screen 40.

[0119] The screen 40 can be a display screen with display function, or a screen integrating display and touch functions. The screen 40 is used to display text, images, videos, and other information. The screen 40 is supported by the middle frame 30 and located on one side of the middle frame 30.

[0120] The circuit board 50 is typically also mounted on the mid-frame 30, and the circuit board 50 and the screen 40 are mounted on opposite sides of the mid-frame 30. At least one or more of the antenna 100, first matching circuit M1, second matching circuit M2, splitter 150, RF chip that generates the original RF signal, phase shifter 160, and control chip 170 described above may be disposed on the circuit board 50.

[0121] The battery cover 60 is disposed on the side of the circuit board 50 opposite to the middle frame 30. The battery cover 60, the middle frame 30, the circuit board 50, and the screen 40 cooperate with each other to assemble a complete electronic device 1. It is understood that the structural description of the electronic device 1 is merely a description of one form of the structure of the electronic device 1, and should not be construed as a limitation on the electronic device 1, nor should it be construed as a limitation on the antenna 100 and the antenna array 10.

[0122] When the second coupling branch 130 is electrically connected to the ground of the middle frame 30, the second coupling branch 130 can also be connected to the ground of the middle frame 30 through a connecting rib, or the second coupling branch 130 can also be electrically connected to the ground of the middle frame 30 through a conductive spring.

[0123] The electronic device 1 includes multiple side panels 11a connected end-to-end. In this embodiment, four side panels 11a connected end-to-end are used as an example for illustration. It should be understood that this should not be construed as a limitation on the electronic device 1 provided in this application. One or more of the radiator 110, the first coupling branch 120, and the second coupling branch 130 in the antenna 100 can be directly disposed on the side panel 11a, formed on the side panel 11a, or disposed inside the electronic device 1, and disposed adjacent to the side panel 11a. When one or more of the radiator 110, the first coupling branch 120, and the second coupling branch 130 in the antenna 100 are directly disposed on the side panel 11a, formed on the side panel 11a, or disposed inside the electronic device 1, and disposed adjacent to the side panel 11a, the influence of other components in the electronic device 1 on the transmission and reception performance of the antenna 100 when transmitting and receiving electromagnetic wave signals can be reduced or even avoided.

[0124] The radiator 110 can be, but is not limited to, an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal stub. Therefore, the radiator 110 can be fabricated on the side 11a of the electronic device 1 using processes such as FPC, LDS, PDS, or metal patch.

[0125] Accordingly, the first coupling branch 120 can be fabricated on the side of the electronic device 1 using processes such as FPC, LDS, PDS, or metal patch.

[0126] Accordingly, the second coupling branch 130 can be fabricated on the side 11a of the electronic device 1 by processes such as FPC, LDS, PDS or metal patch.

[0127] Furthermore, the middle frame 30 includes a frame body 310 and a border 320. The border 320 is bent and connected to the periphery of the frame body 310. Any one of the radiator 110, the first coupling branch 120 and the second coupling branch 130 in the various embodiments described above can be formed on the border 320, thereby making the structure of the electronic device 1 more compact.

[0128] In this embodiment, the frame body 310 is partially exposed, forming the side 11a of the electronic device 1. It is understood that in other embodiments, the side 11a of the electronic device 1 may be formed by a portion of the battery cover 60.

[0129] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. An antenna, characterized by The antenna comprises: a radiator having a first feed point for receiving a first radio frequency signal, the radiator operating in a first resonant mode according to the first radio frequency signal to transceive electromagnetic wave signals of a first frequency band; and a first coupling branch having a second feed point for receiving a second radio frequency signal, the first coupling branch being coupled with the radiator to couple the second radio frequency signal to the radiator, the radiator operating in a second resonant mode according to the second radio frequency signal to transceive electromagnetic wave signals of a second frequency band, wherein the second resonant mode is different from the first resonant mode; wherein the radiator comprises a first feed portion, a first radiating portion and a second radiating portion, the first feed point is located at the first feed portion, the first radiating portion is connected to the first feed portion and coupled with the first coupling branch, the second radiating portion is connected to the first feed portion and the first radiating portion, the first resonant mode comprises two quarter-wavelength resonant modes, the second resonant mode is a half-wavelength resonant mode, the first radiating portion is configured to support one of the quarter-wavelength resonant modes, the second radiating portion is configured to support the other of the quarter-wavelength resonant modes, and the first radiating portion and the second radiating portion are collectively configured to support the second resonant mode.

2. The antenna of claim 1, wherein The first resonant mode and the second resonant mode support electromagnetic wave signals of the same frequency band.

3. The antenna of claim 1, wherein The second radiating portion and the first radiating portion are symmetric about the first feed portion.

4. The antenna of claim 1, wherein The second radiating portion and the first radiating portion are asymmetric about the first feed portion. The antenna further comprises at least one of a first matching circuit and a second matching circuit: When the antenna further comprises the first matching circuit, the first matching circuit is electrically connected to the first radiating portion and configured to adjust a resonant frequency point of the first radiating portion to be equal to a preset frequency point. When the antenna further comprises the second matching circuit, the second matching circuit is electrically connected to the second radiating portion and configured to adjust a resonant frequency point of the second radiating portion to be equal to a preset frequency point, wherein the preset frequency point is a resonant frequency point when the second radiating portion and the first radiating portion are symmetric about the first feed portion.

5. The antenna of claim 1, wherein The radiator has a connection point, the second radiating portion connects the first feed portion and the first radiating portion at the connection point, the first radiating portion has a first free end, the second radiating portion has a second free end, the first resonant mode generates a first current that periodically oscillates, the first current comprises a first sub-current and a second sub-current, wherein in a first half cycle of a period, the current amplitude at the connection point is the highest, the first sub-current flows from the connection point to the first free end, and the second sub-current flows from the connection point to the second free end; in a second half cycle of the period, the phase of the first current is deflected by 180°, the first sub-current flows from the first free end to the connection point, and the second sub-current flows from the second free end to the connection point.

6. The antenna according to claim 1, wherein The radiator has a connection point, the second radiating part connects the first feeding part and the first radiating part at the connection point, the first radiating part has a first free end, the second radiating part has a second free end, the second resonant mode generates a second current which periodically oscillates, in the first half of a period, the current amplitude at the connection point is the highest, the second current flows from the first free end to the second free end; in the second half of a period, the phase of the second current is deflected by 180°, the second current flows from the second free end to the first free end.

7. The antenna of claim 1, wherein The first coupling branch is located in a space formed by the first feeding part and the first radiating part.

8. The antenna of claim 1, wherein The antenna further comprises: A second coupling branch, the second coupling branch is coupled with the second radiating part, and the second coupling branch is electrically connected to a ground.

9. The antenna of claim 8, wherein, The first coupling branch comprises: A second feeding part, the second feeding point is located on the second feeding part; and A first coupling part, the first coupling part is electrically connected to the second feeding part, and the first coupling part is spaced apart from and coupled with the first radiating part; The second coupling branch comprises: A second coupling part, the second coupling part is spaced apart from and coupled with the second radiating part, and the second coupling part is symmetrical to the first coupling part with respect to the radiator; and A grounding part, the grounding part is connected with the second coupling part, and the grounding part is electrically connected to a ground.

10. The antenna of claim 9, wherein, The connection point of the grounding part to the second coupling part is a first connection point, the connection point of the second feeding part to the first coupling part is a second connection point, and the first connection point and the second connection point are symmetrical to the radiator.

11. The antenna according to claim 9, wherein, The first coupling part extends along a first direction, the second feeding part extends along a second direction, and the second feeding part is connected to a midpoint of the first coupling part; The second coupling part extends along the first direction, the grounding part extends along the second direction, and the second coupling part is connected to a midpoint of the grounding part.

12. The antenna according to claim 9, wherein, The first coupling part extends along a first direction, the second feeding part extends along a second direction, and the first coupling part is connected to an end of the second feeding part away from the second coupling branch; and the second coupling part extends along the first direction, the grounding part extends along the second direction, and the grounding part is connected to an end of the second coupling part away from the first coupling branch; Or, The first coupling part extends along a first direction, the second feeding part extends along a second direction, and the first coupling part is connected to an end of the first feeding part adjacent to the second coupling branch; and the second coupling part extends along the first direction, the grounding part extends along the second direction, and the grounding part is connected to an end of the second coupling part adjacent to the first coupling branch.

13. The antenna according to claim 8, wherein, The second coupling branch is located in a space formed by the first feeding part and the second radiating part.

14. The antenna according to claim 1, wherein, The antenna further comprises a splitter, the splitter has: An input end is configured to receive an original radio frequency signal, and the splitter is configured to split the original radio frequency signal into the first radio frequency signal and the second radio frequency signal; A first output end is electrically connected to the first feeding point and configured to output the first radio frequency signal to the first feeding point; and A second output end is electrically connected to the second feeding point and configured to output the second radio frequency signal to the second feeding point. The antenna further comprises a phase shifter; 15. The antenna of claim 14, wherein, The phase shifter is electrically connected between the first output end and the first feeding point, and configured to phase shift the first radio frequency signal and output the phase-shifted first radio frequency signal to the first feeding point; or The phase shifter is electrically connected between the second output end and the second feeding point, and configured to phase shift the second radio frequency signal and output the phase-shifted second radio frequency signal to the second feeding point. The antenna further comprises:

16. The antenna of claim 15, wherein, A control chip configured to generate a control signal, and the control chip is electrically connected to the phase shifter; If the phase shifter is electrically connected between the first output end and the first feeding point, the control signal is configured to control a phase difference between the phase-shifted first radio frequency signal and the second radio frequency signal; or If the phase shifter is electrically connected between the second output end and the second feeding point, the control signal is configured to control a phase difference between the first radio frequency signal and the phase-shifted second radio frequency signal. The antenna array comprises a plurality of antennas according to any one of claims 1-16, and the plurality of antennas are arranged according to a preset rule.

17. An antenna array, characterized by The direction patterns of the antennas are different in direction.

18. The antenna array of claim 17, wherein, The electronic device comprises the antenna according to any one of claims 1-16; or the electronic device comprises the antenna array according to any one of claims 17-18.

19. An electronic device, comprising: ​

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