Antenna assembly and electronic equipment

Abstract

The invention relates to the technical field of wireless communication, and discloses an antenna assembly and electronic equipment, and the antenna assembly comprises a metal plate which comprises a substrate, a first radiation part and a second radiation part, and the first radiation part and the second radiation part are electrically connected through the substrate to form coupling; the radio frequency circuit is electrically connected with the first radiation part and the second radiation part; the radio frequency circuit is used for coupling a radio frequency signal into the first radiation part or the second radiation part, so that the first radiation part and the second radiation part are coupled to generate first resonance in a differential mode; and the radio frequency circuit is also used for coupling the radio frequency signal into the first radiation part and the second radiation part, so that the first radiation part and the second radiation part generate second resonance in the common mode, and the frequency of the first resonance is different from that of the second resonance. Compared with the prior art, the integration level and the frequency band adaptability of the antenna can be improved.

Description

Technical Field

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

[0002] Currently, with the increasing number of wireless functions in consumer electronics products, the frequency bands that antennas need to cover are constantly expanding (such as simultaneously covering 2.4GHz, 5GHz, 6GHz, etc.).

[0003] Traditional single antennas typically operate in a single differential or common-mode state, resulting in limited bandwidth. Therefore, effectively exciting and coordinating differential-mode and common-mode radiation modes within a single antenna structure to improve bandwidth has become a pressing technical challenge. Summary of the Invention

[0004] The main objective of this application is to provide an antenna assembly and electronic device that aims to solve the existing technical problem of how to increase bandwidth within a single antenna structure.

[0005] To achieve the above objectives, this application provides an antenna assembly, the antenna assembly comprising: A metal plate includes a substrate, a first radiating portion, and a second radiating portion, wherein the first radiating portion and the second radiating portion are electrically connected through the substrate to form a coupling. The radio frequency circuit is electrically connected to the first radiating part and the second radiating part. The radio frequency circuit is used to couple a radio frequency signal into the first radiating part or the second radiating part, so that the first radiating part and the second radiating part are coupled to generate a first resonance in differential mode. The radio frequency circuit is further configured to couple the radio frequency signal to the first radiating part and the second radiating part, so that the first radiating part and the second radiating part generate a second resonance in common mode, wherein the frequency of the first resonance is different from that of the second resonance.

[0006] In one embodiment, the substrate includes: a first panel, a second panel, and a third panel; The first panel and the second panel are disposed on one side of the third panel along the length direction of the third panel; The first radiating part is disposed on the side of the first panel facing the second panel, and the second radiating part is disposed on the side of the second panel facing the first panel. The first radiating part and the second radiating part are spaced apart along the length direction of the third panel, and the first radiating part and the second radiating part are spaced apart along the width direction of the third panel.

[0007] In one embodiment, the radio frequency circuit includes: a power supply module; The power supply module is electrically connected to the first radiating part and the third panel, respectively. The power supply module is used to couple the radio frequency signal into the first radiating part, so that the first radiating part and the second radiating part are coupled to generate a first resonance in differential mode; The power supply module is further configured to couple the radio frequency signal into the first radiating part, and couple the radio frequency signal into the second radiating part through the third panel and the second panel, so that the first radiating part and the second radiating part generate a second resonance in common mode.

[0008] In one embodiment, the metal plate further includes: a first branch; The first branch is located on the side of the first radiating portion facing the third panel; One end of the first branch facing away from the first radiating part is electrically connected to the power supply module. The power supply module is electrically connected to the first connection point corresponding to the interval between the third panel and the first branch. The first branch, the first radiating part and the second radiating part are coupled through the substrate. The power supply module is also used to couple the radio frequency signal into the first radiating part through the first branch.

[0009] In one embodiment, the power supply module includes: an RF port, a first resistor, a second resistor, and a first capacitor to a third capacitor; The radio frequency port is used to receive the radio frequency signal. The first end of the first capacitor is connected to the radio frequency port. The second end of the first capacitor is connected to the first end of the first resistor and the first end of the second resistor. The second end of the second resistor is connected to the first connection point. The second end of the first resistor is connected to the first end of the second capacitor and the first end of the third capacitor. The second end of the third capacitor is connected to the first connection point. The second end of the second capacitor is connected to the first branch.

[0010] In one embodiment, the metal plate further includes a second branch; the radio frequency circuit further includes a frequency selection module. The second branch is located on the side of the second radiating portion facing the third panel; One end of the second branch facing away from the second radiating part is electrically connected to the frequency selection module. The frequency selection module is electrically connected to the second connection point corresponding to the interval between the third panel and the second branch. The first branch, the second branch, the first radiating part and the second radiating part are coupled through the substrate. The power supply module is further configured to couple the radio frequency signal to the second branch through the third panel and the frequency selection module when the frequency of the radio frequency signal is consistent with the frequency allowed by the frequency selection module, so that the second branch, the second radiating part and the first radiating part are coupled to generate the third resonance in the differential mode; The frequency of the third resonance in the differential mode is different from that of the first resonance and the second resonance.

[0011] In one embodiment, the frequency selection module includes: a third resistor and a fourth capacitor; The first end of the third resistor is connected to the second branch, the second end of the third resistor is connected to the first end of the fourth capacitor, and the second end of the fourth capacitor is connected to the second connection point.

[0012] In one embodiment, the first panel includes: a third branch, a third radiating portion, and a fourth panel; the radio frequency circuit further includes: a frequency modulation module; The third branch and the fourth panel are spaced apart on one side of the third panel along the length direction of the third panel. The third radiating part is located on the side of the third branch facing the fourth panel and is spaced apart from the fourth panel along the length direction of the third panel. The end of the third radiating part facing away from the third branch is electrically connected to the fourth panel through the frequency modulation module. The third branch is also coupled to the third radiating part. The power supply module is also used to transmit the radio frequency signal to the frequency modulation module through the third panel and the fourth panel; The frequency modulation module is used to couple the radio frequency signal into the third radiating part, so that the third radiating part, the third branch, the first radiating part and the first branch are coupled to generate a fourth resonance, the fourth resonance frequency being different from the first resonance and the second resonance.

[0013] In one embodiment, the frequency modulation module includes: a fifth capacitor; The first end of the fifth capacitor is connected to the third radiating component, and the second end of the fifth capacitor is connected to the fourth panel.

[0014] In addition, to achieve the above objectives, this application also provides an electronic device, which includes the antenna assembly as described above.

[0015] This application provides an antenna assembly and an electronic device. The antenna assembly includes: a metal plate, comprising a substrate, a first radiating portion, and a second radiating portion, wherein the first radiating portion and the second radiating portion are electrically connected through the substrate to form coupling; a radio frequency (RF) circuit, electrically connected to the first radiating portion and the second radiating portion; the RF circuit is configured to couple an RF signal into the first radiating portion or the second radiating portion to generate a first resonance in differential mode; the RF circuit is further configured to couple the RF signal into the first radiating portion and the second radiating portion to generate a second resonance in common mode, wherein the frequency of the first resonance is different from that of the second resonance.

[0016] This application can be configured with a metal plate containing dual radiating sections and a radio frequency (RF) circuit. The first and second radiating sections can be electrically connected via a substrate to form coupling, and the RF circuit can couple RF signals into the radiating sections individually or simultaneously. In actual operation, the RF circuit can selectively couple RF signals into the first or second radiating section to excite a first resonance in differential mode; or it can couple signals into both radiating sections simultaneously to excite a second resonance in common mode. Compared to existing antenna designs that struggle to flexibly support multiple differentiated frequency bands within a single structure, this application, through the reconfigurable radiating section and RF circuitry, can achieve switching between different resonance modes based on the same metal plate structure. Therefore, electronic devices can directly cover a wider frequency band or adapt to different communication standards through mode switching during communication, improving the antenna's integration and frequency band adaptability. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural block diagram of the antenna assembly of the first embodiment of this application; Figure 2 This is a schematic diagram of the structure of the antenna assembly of the first embodiment of this application; Figure 3 This is a frequency amplitude curve diagram from an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the second embodiment of the antenna assembly of this application; Figure 5 This is a schematic diagram of the radio frequency circuit in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the antenna assembly of the third embodiment of this application; Figure 7 This is a circuit diagram of the frequency modulation module in an embodiment of this application.

[0020] Explanation of icon numbers:

[0021] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0022] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0023] 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 a part of the embodiments of this application, and not all of the 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.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0026] Understandably, as consumer electronics products increasingly feature wireless capabilities, the frequency bands that antennas need to cover are constantly expanding (such as simultaneously covering 2.4GHz, 5GHz, 6GHz, etc.).

[0027] Traditional single antennas typically operate in a single differential or common-mode state, resulting in limited bandwidth. Therefore, effectively exciting and coordinating differential-mode and common-mode radiation modes within a single antenna structure to improve bandwidth has become a pressing technical challenge.

[0028] To address the aforementioned shortcomings, this embodiment provides an antenna assembly comprising a metal plate with dual radiating sections and a radio frequency (RF) circuit 4. The first radiating section 2 and the second radiating section 3 are electrically connected via a substrate 1 to form coupling, and the RF circuit 4 can couple RF signals into the radiating sections individually or simultaneously. In actual operation, the RF circuit 4 can selectively couple RF signals into either the first or second radiating section 3 to excite a first resonance in differential mode; or it can simultaneously couple signals into both radiating sections to excite a second resonance in common mode. Compared to existing antenna designs that struggle to flexibly support multiple differentiated frequency bands within a single structure, this application, through the reconfigurable radiating section and the RF circuit 4, enables switching between different resonance modes based on the same metal plate structure. Consequently, electronic devices can directly cover a wider frequency band or adapt to different communication standards through mode switching during communication, improving the antenna's integration and frequency band adaptability.

[0029] For ease of understanding, the following is combined with Figures 1 to 7 The antenna assembly provided in the embodiments of this application will be described in detail.

[0030] Reference Figure 1 as well as Figure 2 , Figure 1 This is a structural block diagram of the first embodiment of the antenna assembly of this application. Figure 2 This is a schematic diagram of the structure of the antenna assembly of the first embodiment of this application. Figure 1 As shown, in this embodiment, the antenna assembly includes: The metal plate includes a substrate 1, a first radiating part 2 and a second radiating part 3, wherein the first radiating part 2 and the second radiating part 3 are electrically connected through the substrate 1 to form a coupling.

[0031] It should be noted that the antenna assembly in this embodiment can be applied to any electronic device that requires an antenna for communication. The electronic device can be a wireless communication device, such as a wireless headset, smart bracelet, or mobile phone. This embodiment does not limit this. However, for the sake of convenience in subsequent explanations, this embodiment uses a small electronic device for description.

[0032] It should be understood that the aforementioned metal plate can be a conductor used to support the antenna radiating element and provide a ground reference. The structure of the aforementioned metal plate can be a one-piece metal sheet or a ground plane (GND) on a printed circuit board (PCB). In this embodiment, in order to achieve efficient electromagnetic coupling and radiation within a limited space, the metal plate can be designed as a three-dimensional structure containing multiple panels (such as a first panel 11, a second panel 12, and a third panel 13). Specifically, the first panel 11 and the second panel 12 can be disposed on one side along the length direction of the third panel 13, so that the radiating part is located on a specific side of the panel. The specific structure can be formed by bending, stamping, or cutting according to the ID (industrial design) and internal stacking conditions of the terminal product. This embodiment does not limit this.

[0033] It should also be understood that, in order to reduce the size, in this embodiment, the first radiating part 2 and the second radiating part 3 can be directly used as protrusions or slot structures formed on the metal plate by etching or stamping (i.e., the "radiating part" and the "substrate 1" are integrated), rather than separate components that are additionally welded. By integrating the radiating part with the substrate 1, assembly steps can be reduced and structural stability can be improved. Whether to adopt an integrated design can be determined according to production costs and performance requirements, and this embodiment does not impose any restrictions on this. It should be noted that when the metal plate itself is part of the middle frame or outer shell of the device, the aforementioned substrate 1 (third panel 13) can also serve as the mechanical support structure of the device, while the first panel 11 and the second panel 12 can serve as the side or decorative part of the middle frame, and this embodiment does not impose any restrictions on this.

[0034] It is important to emphasize that, since the metal plate in this embodiment serves as the physical carrier and ground for antenna radiation, its size and shape directly affect the antenna's resonant frequency and bandwidth. In this embodiment, the third panel 13 (substrate 1) can serve as the primary ground plane, and its area and shape can provide a stable reference ground for the antenna. Furthermore, the aforementioned first radiating element 2 can be disposed on a specific side of the first panel 11, and the second radiating element 3 can be disposed on a specific side of the second panel 12, with the two arranged opposite each other and spaced apart. This arrangement allows the two radiating elements to be electromagnetically coupled through space and the substrate 1, thereby exciting the desired differential and common modes.

[0035] It is also important to emphasize that, in order to achieve multi-band coverage (e.g., simultaneous coverage of 2.4GHz, 5GHz, and 6GHz), the shape, size, and spacing between the first radiating element 2 and the second radiating element 3 need to be designed collaboratively. Specifically, the length and shape of the first radiating element 2 primarily affect one resonant frequency (e.g., high frequency), while the length and shape of the second radiating element 3, as well as the coupling strength between them, jointly affect another resonant frequency (e.g., low frequency). By adjusting these parameters, the frequency positions of the first resonant (differential mode) and the second resonant (common mode) can be controlled, thereby widening the overall operating bandwidth of the antenna.

[0036] It should be noted that the coupling described above in this embodiment can be electromagnetic coupling, meaning that the two radiating parts are not connected by a direct wire, but rather energy is transferred through the interaction of electric and magnetic fields. This allows the antenna to generate multiple operating modes under a single feed point, thereby achieving a wide bandwidth. The strength of the coupling can be adjusted by changing the horizontal spacing between the two radiating parts, the vertical height difference, and the width of the intermediate substrate 1 (third panel 13). The specific adjustment method can be optimized based on simulation and test results, and this embodiment does not impose any limitations on this.

[0037] It should also be noted that in some implementations of this embodiment, the metal plate can be further provided with branches that also form coupling with the main radiating part. By introducing branches and connecting them with corresponding matching or frequency selection circuits, additional resonant points can be introduced, thereby further expanding the bandwidth or improving the impedance matching characteristics in certain frequency bands.

[0038] Furthermore, in order to achieve wireless communication, the antenna assembly also includes: a radio frequency circuit 4, which is electrically connected to the first radiating part 2 and the second radiating part 3; It should be understood that the aforementioned radio frequency circuit 4 can be a collection of electronic circuits used to generate, process, or transmit radio frequency signals. In the aforementioned antenna assembly, its core function is to efficiently feed radio frequency energy from a signal source (such as a radio frequency chip) to the aforementioned first radiating part 2 and second radiating part 3, and to control their excitation mode to generate the desired radiation pattern. The aforementioned electrical connection can refer to establishing an electrical connection through a conductive path (such as a transmission line, wire, pad, via, or direct contact) to realize the transmission of signals or electrical energy.

[0039] It should also be understood that in small electronic devices, due to space constraints, the radio frequency circuit 4 may not be directly connected to both radiating parts simultaneously via physical wires. In this embodiment, the radio frequency circuit 4 can be directly connected to the first radiating part 2 through a single feed point, and through the coupling effect of the substrate 1, transfer energy to the second radiating part 3, thereby achieving a functional electrical connection with both. Whether a direct connection or an indirect connection through coupling is used can be selected according to the antenna layout and performance requirements, and this embodiment does not limit this. It should be noted that when precise control of the excitation phase or amplitude of the second radiating part 3 is required, the radio frequency circuit 4 may also establish a direct electrical connection with the second radiating part 3 through an independent transmission path, and this embodiment does not limit this.

[0040] It is important to emphasize that the electrical connection between the RF circuit 4 and the two radiating sections in this embodiment is crucial for achieving coordinated excitation of differential and common-mode modes. When the RF circuit 4 operates in a specific manner (e.g., primarily exciting the first radiating section 2, while the second radiating section 3 receives anti-phase excitation mainly through coupling), it can induce current distributions with approximately equal amplitudes and opposite phases in the two radiating sections, thereby generating the first resonance in differential mode. When the RF circuit 4 operates in another manner (e.g., through circuit design to provide approximately in-phase excitation to the two radiating sections), it can generate the second resonance in common-mode mode. The resonant frequencies of these two modes are different, jointly expanding the antenna bandwidth.

[0041] It should also be emphasized that, in order to achieve the different excitation methods described above, the radio frequency circuit 4 may contain specific feed networks, impedance matching circuits, or phase adjustment elements. The radio frequency circuit is responsible for transmitting signals and determining the signal strength, phase, and frequency response fed into the first radiating section 2 and the second radiating section 3, thereby determining the excitation radiation mode.

[0042] Furthermore, in order to achieve coordinated excitation of differential mode and common mode, the radio frequency circuit 4 is used to couple the radio frequency signal into the first radiating part 2 or the second radiating part 3, so that the first radiating part 2 and the second radiating part 3 are coupled to generate a first resonance in differential mode.

[0043] It should be understood that the RF circuit 4 is configured to selectively feed the RF signal primarily to one of the two radiating elements (the first radiating element 2 or the second radiating element 3), rather than feeding both simultaneously and in phase. Through this "asymmetric" or "single-sided main excitation" feeding method, combined with the preset electromagnetic coupling structure between the two radiating elements, a resonant mode with differential characteristics (i.e., the current amplitudes on the two radiating elements are similar but the phases are opposite) is finally excited in the entire antenna system.

[0044] refer to Figure 2 as well as Figure 3 , Figure 3 This is a frequency amplitude curve diagram in an embodiment of this application, wherein... Figure 3 The horizontal axis represents frequency, and the vertical axis represents amplitude. It should also be understood that in actual circuit implementation, the feed point will be connected to one of the radiating parts (e.g., the first radiating part 2), becoming the main port for signal injection (i.e.,...). Figure 2 Point A in the diagram). After the radio frequency (RF) signal enters the main radiating section (e.g., the first radiating section 2) from the main port, the RF signal is efficiently transmitted to the second radiating section 3 through near-field coupling effect because the first radiating section 2 and the second radiating section 3 form a tight electromagnetic coupling through the metal substrate 1 (especially the third panel 13). During this coupling transmission process, due to the symmetry of the antenna structure or a specific design, the current induced on the second radiating section 3 will have an approximately 180-degree phase difference with the current on the main radiating section, thus naturally forming a differential current distribution, so that the first radiating section 2 and the second radiating section 3 couple to generate the first resonance in differential mode (i.e., Figure 3 (The 52 corresponds to the frequency point).

[0045] It should be noted that during this differential mode excitation process, the main flow direction of the radio frequency signal is from the output of the radio frequency circuit 4 to the selected main radiating part (such as the first radiating part 2), and then through the coupling effect of the substrate 1, the energy and inverted information are transferred to the secondary radiating part (such as the second radiating part 3).

[0046] Correspondingly, the radio frequency circuit 4 is also used to couple the radio frequency signal to the first radiating part 2 and the second radiating part 3, so that the first radiating part 2 and the second radiating part 3 generate a second resonance in common mode, wherein the frequency of the first resonance is different from that of the second resonance.

[0047] It should be understood that, in another embodiment, the radio frequency circuit 4 is configured to feed radio frequency signals simultaneously and in phase to the first radiating element 2 and the second radiating element 3. By using a "symmetrical" or "dual-sided in-phase excitation" feeding method, the two radiating elements are directly driven to generate in-phase oscillations, thereby exciting common-mode characteristics throughout the antenna system.

[0048] It is important to emphasize that the common-mode generation relies on the RF circuit 4 providing two in-phase signals and ensuring their effective injection into the two radiators. In this mode, the electromagnetic coupling between the first radiator 2 and the second radiator 3 still exists, but its function changes from generating anti-phase excitation in differential mode to coordinating the resonant frequency and improving impedance matching.

[0049] It is also important to emphasize that the second resonance in common-mode has a different frequency than the first resonance (differential mode). This frequency primarily depends on the equivalent electrical length formed between each radiator and the substrate 1 when each radiator acts as a monopole oscillator. Typically, due to the longer current path in common-mode (current flows from the radiator to ground and back), its resonant frequency is lower than the differential-mode resonant frequency determined by the coupling loop between the radiators. By independently adjusting the physical length of the radiators and their relative position to the substrate 1, the frequency of the second resonance can be precisely set to the target low-frequency band (e.g., the 2.4 GHz band).

[0050] refer to Figure 2 as well as Figure 3 It should be noted that during common-mode excitation, after the signal exits from the RF circuit 4, it is split into two in-phase components by the feeding network. One component flows directly to the first radiating section 2; the other component flows to a specific connection point on the metal substrate 1 (i.e., Figure 2 Point C in the diagram), and through the conductivity of the substrate 1, the signal is transmitted to the second radiating part 3, so that the first radiating part 2 and the second radiating part 3 generate a second resonance in common mode (i.e., Figure 3 (The 54 corresponds to the frequency point).

[0051] It should also be noted that in this embodiment, the RF circuit 4 can automatically exhibit the two excitation characteristics mentioned above based on the frequency response characteristics of the internal passive network (R, L, C elements) to different signal frequencies. Since the network has different phase delays and power distributions to the signal at different frequencies, frequency-selective mode excitation is achieved, enabling the antenna to achieve dual-mode broadband operation without any active switches or adjustable components.

[0052] Furthermore, in order to achieve signal coupling, the substrate 1 includes: a first panel 11, a second panel 12, and a third panel 13; The first panel 11 and the second panel 12 are disposed on one side of the third panel 13 along the length direction of the third panel 13; The first radiating part 2 is disposed on the side of the first panel 11 facing the second panel 12, and the second radiating part 3 is disposed on the side of the second panel 12 facing the first panel 11. The first radiating part 2 and the second radiating part 3 are spaced apart along the length direction of the third panel 13, and the first radiating part 2 and the second radiating part 3 are spaced apart along the width direction of the third panel 13.

[0053] It should be understood that the third panel 13 may be the main body of the metal plate, typically serving as the main ground plane and mechanical support substrate 1 of the antenna system. It has a defined length direction (i.e., Figure 2 The horizontal direction) and the width direction perpendicular to it (i.e. Figure 2 (Vertical direction). The first panel 11 and the second panel 12 can be two conductive panels extending from the same long side of the third panel 13. They are arranged side by side along the length of the third panel 13, sharing the same boundary line or located in the same edge region of the third panel 13. The first radiating part 2 is disposed on the first panel 11 and located on the surface or edge of the panel facing the second panel 12, with its emitting surface facing the second panel 12. The second radiating part 3 is disposed on the second panel 12 and located on the surface or edge of the panel facing the first panel 11, with its emitting surface facing the first panel 11. The first radiating part 2 and the second radiating part 3 are arranged facing each other.

[0054] It should be emphasized that, since the first panel 11 and the second panel 12 are separated along the length of the third panel 13, the first radiating part 2 and the second radiating part 3 fixed thereon are a distance apart in the length direction (i.e., the panel arrangement direction). Because the two radiating parts are located on two independent panels (the first and second panels 12), and these two panels extend from the same side of the third panel 13, they are also spaced apart in the direction perpendicular to the third panel 13 (i.e., the width or height direction).

[0055] It should also be emphasized that the coupling of the radio frequency signal is mainly based on the first radiating part 2, the second radiating part 3, and the third panel 13. The conductive surface of the third panel 13 provides capacitive and inductive coupling paths between the two radiating parts, allowing current to flow from one radiating part to the other through the surface of the third panel 13. Furthermore, the first panel 11 and the second panel 12, as carriers and extensions of the radiating parts, participate in forming the current path from the radiating part to the third panel 13, and also influence the edge field distribution between the two radiating parts, thus participating in the coupling.

[0056] It should be noted that during differential mode excitation, the main signal flow path is: from the feed point (e.g., connected to the first radiating section 2) to the first radiating section 2, then through the surface current coupling of the first panel 11 and the third panel 13, and finally to the second radiating section 3 (inducing a reverse current). During common mode excitation, the signal flow path is: simultaneously and in phase from the feed network to the first radiating section 2 (through the first panel 11) and the second radiating section 3 (through the second panel 12 and the connection to the third panel 13).

[0057] Furthermore, the radio frequency circuit 4 includes: a power supply module 41; The power supply module 41 is electrically connected to the first radiating part 2 and the third panel 13 respectively; The power supply module 41 is used to couple the radio frequency signal into the first radiating part 2, so that the first radiating part 2 and the second radiating part 3 are coupled to generate a first resonance in differential mode. The power supply module 41 is also used to couple the radio frequency signal into the first radiating part 2, and couple the radio frequency signal into the second radiating part 3 through the third panel 13 and the second panel 12, so that the first radiating part 2 and the second radiating part 3 generate a second resonance in common mode.

[0058] It should be noted that the aforementioned power supply module 41 can be a module containing passive components (such as resistors, capacitors, and inductors) for impedance matching, signal distribution, and phase adjustment, as well as a transmission line structure. This module is used to effectively inject radio frequency signals into the antenna structure and control the injection method to excite differential and common-mode signals respectively. In this embodiment, it has two clearly defined external power connection endpoints.

[0059] It should also be noted that the connection point with the first radiating section 2 establishes a direct excitation path for the signal to the first radiating section 2. Radio frequency signals can be directly injected into the first radiating section 2 through this connection point. The connection point with the third panel 13 connects the power supply module 41 to the third panel 13, which serves as the main ground plane and coupling medium. This constitutes the starting point of the indirect coupling path for the transmission of radio frequency signals to the second radiating section 3.

[0060] It should be emphasized that in differential mode, the power supply module 41 mainly uses its connection point with the first radiator 2 to directly couple the radio frequency signal into the first radiator 2. Since there is a preset strong electromagnetic coupling between the first radiator 2 and the second radiator 3 through the third panel 13, the energy excited by the first radiator 2 will be transferred to the second radiator 3 through this coupling and induce an anti-phase current, thereby forming differential mode resonance in the entire antenna structure.

[0061] It should also be emphasized that in common-mode, the power supply module 41 utilizes both of its connection points simultaneously. On one hand, the radio frequency (RF) signal is directly coupled to the first radiating section 2. On the other hand, the RF signal is injected into the third panel 13 through its connection point with the third panel 13. The RF signal propagates on the third panel 13 and is conducted through the second panel 12 connected to the third panel 13, ultimately reaching the second radiating section 3. The internal design of the power supply module 41 ensures that the signals reaching their respective radiating sections through these two paths have the same phase, thereby achieving in-phase excitation of the first radiating section 2 and the second radiating section 3, generating common-mode resonance.

[0062] It should also be noted that the two excitation functions mentioned above are implemented by the same power supply module 41, which does not mean that there are two independent circuits inside. The principle is that the passive network inside the power supply module 41 exhibits different impedance and phase responses to signals of different frequencies. In the target high-frequency band, the network characteristics make the RF signal more inclined to flow along the path of "direct excitation of the first radiating part 2 and coupling", which preferably excites the differential mode; in the target low-frequency band, the network characteristics make the RF signal effectively output in phase through the dual path of "direct excitation and panel conduction", which preferably excites the common mode.

[0063] In practical use, the power supply module 41, the first radiating section 2, the third panel 13, the second panel 12, and the second radiating section 3 together form a complete excitation loop. Based on the frequency of the input signal, it adaptively switches between two signal flow modes: at high frequencies, a differential-mode excitation loop is formed, where the power supply module 41 transmits the signal to the first radiating section 2, then to (coupled via the third panel 13) the signal to the second radiating section 3; at low frequencies, a common-mode excitation loop is formed, where the power supply module 41 transmits the signal to the first radiating section 2, then to the second panel 12 via the third panel 13, and finally to the second radiating section 3. Thus, dual-mode coordination and broadband coverage are achieved using only one power supply module 41 and a set of fixed connections.

[0064] Reference Figure 4 , Figure 4 This is a schematic diagram of the structure of the second embodiment of the antenna assembly of this application. Based on the first embodiment described above, the second embodiment of this application is proposed.

[0065] like Figure 4 As shown, in this embodiment, in order to better meet the frequency requirements, the metal plate further includes: a first branch 21; The first branch 21 is located on the side of the first radiating part 2 facing the third panel 13; The end of the first branch 21 facing away from the first radiating part 2 is electrically connected to the power supply module 41 (i.e. Figure 4 (Point A in the middle), the first connection point between the power supply module 41 and the third panel 13 and the first branch 21 (i.e., point A in the middle), the first connection point corresponding to the interval between the power supply module 41 and the third panel 13 and the first branch 21 (i.e., point A in the middle), the first connection point between the power supply module 41 and the third panel 13 and the first branch 21, the first connection point between the power supply module 41 and Figure 4 The first branch 21, the first radiating part 2, and the second radiating part 3 are electrically connected at point C in the middle, and are coupled through the substrate 1. The power supply module 41 is also used to couple the radio frequency signal to the first radiating part 2 through the first branch 21.

[0066] It should be understood that the aforementioned first branch 21 may be an additional conductive structure extending from the main radiating structure to adjust the electrical length or coupling characteristics, such as a thin metal strip or protrusion extending from the radiating sheet. The aforementioned first connection point may be a specific physical location for electrical connection between the power supply module 41 and the third panel 13, such as a metallized via, pad, or contact spring on the PCB.

[0067] It should be noted that in the antenna structure described, when the radio frequency signal is excited, its transmission process is as follows: The feed module 41 first outputs the signal to the end of the first branch 21, which is directly electrically connected to it. The signal is injected into the first radiating part 2 through the conduction path of the first branch 21. At the same time, the feed module 41 is also electrically connected to the third panel 13 (the main body of the substrate 1) through the first connection point, thereby providing a reference ground potential for the signal and another potential path for transmission to the second radiating part 3. The radio frequency energy injected into the first radiating part 2 is transmitted to the second radiating part 3, which is spaced apart from it, through the electromagnetic coupling effect of the substrate 1 (mainly the third panel 13). In this process, the first branch 21, the first radiating part 2, and the second radiating part 3 work together through the coupling network formed by the substrate 1, jointly determining the resonant characteristics and radiation mode of the antenna.

[0068] It should be emphasized that the first branch 21, as an extension of the first radiating part 2, participates in resonance and affects impedance matching; the first radiating part 2, as one of the main radiators, is directly excited and radiates energy; the second radiating part 3, as a coupling radiator, receives energy through coupling and participates in radiation; and the substrate 1 (especially the third panel 13) serves as the common ground plane and the coupling medium with the core, coordinating the current distribution and phase relationship of the entire system.

[0069] refer to Figure 5 , Figure 5 This is a schematic diagram of the radio frequency circuit in an embodiment of this application. Further, to realize the function of the power supply module 41, the power supply module 41 includes: a radio frequency port, a first resistor R1, a second resistor R2, and first capacitors C1 to third capacitors C3; The radio frequency port is used to receive the radio frequency signal. The first end of the first capacitor C1 is connected to the radio frequency port. The second end of the first capacitor C1 is connected to the first end of the first resistor R1 and the first end of the second resistor R2. The second end of the second resistor R2 is connected to the first connection point. The second end of the first resistor R1 is connected to the first end of the second capacitor C2 and the first end of the third capacitor C3. The second end of the third capacitor C3 is connected to the first connection point. The second end of the second capacitor C2 is connected to the first branch 21.

[0070] It should be noted that the first resistor R1 and the second resistor R2 mentioned above can be surface-mount resistors used to introduce specific resistance values ​​to improve bandwidth, stability, and matching effect, such as thick-film or thin-film surface-mount resistors packaged as 0402 or 0201. The first capacitor C1 to the third capacitor C3 mentioned above can be surface-mount capacitors used to provide DC blocking, coupling, and tuning reactance, such as multilayer ceramic capacitors (MLCCs). The first terminal and the second terminal mentioned above can refer to the two electrical connection terminals of a two-terminal component (such as a resistor or capacitor), without polarity distinction.

[0071] refer to Figure 4 In practical applications, after the radio frequency signal is input from an external radio frequency chip via the radio frequency port, it first undergoes DC blocking and initial impedance transformation through the first capacitor C1. Subsequently, the signal path is shunted at the second terminal of the first capacitor C1, with one path directly leading to the first connection point (i.e., the second resistor R2). Figure 4 Point C in the diagram corresponds to Figure 5 GND_C1, which is connected to the third panel 13, forms part of the grounding and common-mode excitation path. Another path transmits the signal further via the first resistor R1. The signal flowing through the first resistor R1 is redistributed at its second end: a portion returns to the first connection point (i.e., via the third capacitor C3). Figure 5 GND_C2 is also connected to Figure 4 Point C), thus forming a specific admittance to ground together with the path through the second resistor R2; another part is finally coupled to the first branch 21 through the second capacitor C2, and then injected into the first radiating part 2 (i.e. Figure 5 Point A in the middle corresponds to Figure 4 (Point A in the middle).

[0072] It is important to emphasize that in this embodiment, the first resistor R1 and the second resistor R2 primarily provide resistive losses to broaden the matching bandwidth and stabilize the circuit. The first capacitor C1, the second capacitor C2, and the third capacitor C3, through their capacitive reactance characteristics, provide the necessary phase shift and reactive components within the target frequency band. Together, they tune the input impedance from the RF port to the antenna to close to the system characteristic impedance (e.g., 50 ohms), thereby achieving efficient power transfer. Simultaneously, this specific network topology, by controlling the signal amplitude and phase relationship flowing to the first connection point (ground / common-mode path) and to the first branch 21 (differential-mode main path), assists in achieving coordinated excitation of the antenna's differential-mode and common-mode resonant modes.

[0073] To better meet frequency requirements, the metal plate further includes a second branch 31; the radio frequency circuit 4 further includes a frequency selection module 42. The second branch 31 is located on the side of the second radiating part 3 facing the third panel 13; The end of the second branch 31 facing away from the second radiating part 3 is electrically connected to the frequency selection module 42 (i.e. Figure 4 (Point B), the frequency selection module 42 is electrically connected to the second connection point corresponding to the interval between the third panel 13 and the second branch 31 (i.e., Figure 4 (Point D in the middle), the first branch 21, the second branch 31, the first radiating part 2 and the second radiating part 3 are coupled through the substrate 1; The power supply module 41 is also used to couple the radio frequency signal to the second branch 31 through the third panel 13 and the frequency selection module 42 when the frequency of the radio frequency signal is consistent with the frequency allowed by the frequency selection module 42, so that the second branch 31, the second radiating part 3 and the first radiating part 2 are coupled to generate the third resonance in the differential mode. The frequency of the third resonance in the differential mode is different from that of the first resonance and the second resonance.

[0074] It should be noted that the aforementioned second stub 31 can be a metal extension attached to the second radiator to introduce additional resonance or enhance coupling, such as an L-shaped slender stub extending from the edge of the radiating patch. The aforementioned RF circuit 4 can be a collection of all electronic circuits including signal processing, matching, and feeding functions, such as an RF front-end module integrated on a PCB that includes filters, matching networks, and connectors. The aforementioned frequency selection module 42 can be a two-port network with a specific frequency response to allow or suppress signals in certain frequency bands, such as a series LC resonant circuit composed of a patch inductor and capacitor, with its resonant frequency designed to be 5.5 GHz. The aforementioned allowed frequency can refer to the center frequency or frequency band range designed by the frequency selection module 42 to allow signals to pass with lower attenuation; its characteristics are determined by the parameters of the components within the module.

[0075] refer to Figure 4 In practical applications, when the frequency of the radio frequency signal from the power supply module 41 falls within the preset allowable passband of the frequency selection module 42, the signal energy of that frequency component can reach the second connection point (i.e., ...) through the conduction effect of the third panel 13. Figure 4 Point D in the diagram corresponds to Figure 5 The signal is then effectively coupled into the frequency selection module 42 (GND_D). The frequency selection module 42, acting as a frequency controller, exhibits low insertion loss for this specific frequency band signal, allowing it to pass through and be transmitted to its direct electrical connection (via...). Figure 4The second branch 31 (point B in the diagram). The second branch 31, as an extension of the second radiating section 3, injects the received signal into the second radiating section 3, exciting it to generate oscillations at a specific frequency. Simultaneously, through the strong coupling of the substrate 1, the excited second radiating section 3 forms a tight electromagnetic interaction network with the first radiating section 2 and the original first branch 21 and second branch 31, collaboratively exciting a completely new current distribution. This ensures that the currents on the first radiating section 2 and the second radiating section 3 satisfy the differential mode requirement of similar amplitude and opposite phase, thereby generating a third resonance in another differential mode (i.e.,...). Figure 3 (The frequency point corresponding to 53 in the text).

[0076] To achieve frequency selection, such as Figure 5 As shown, the frequency selection module 42 includes: a third resistor R3 and a fourth capacitor C4; The first end of the third resistor R3 is connected to the second branch 31, the second end of the third resistor R3 is connected to the first end of the fourth capacitor C4, and the second end of the fourth capacitor C4 is connected to the second connection point.

[0077] It should be understood that the third resistor R3 mentioned above can be a fixed chip resistor in the RC frequency selection network used to provide resistive load, control insertion loss in the passband, and control the frequency response profile, such as a 10-ohm 0402 package surface mount resistor. The fourth capacitor C4 mentioned above can be a key capacitor component in the RC frequency selection network that uses its capacitive reactance to determine the circuit cutoff frequency, such as a 0.5 picofarad multilayer ceramic capacitor (MLCC).

[0078] In practical applications, when an RF signal attempts to pass through the frequency selection module 42 from the second stub 31 side, the RF signal first flows through the third resistor R3 and then reaches the fourth capacitor C4. At low frequencies, the capacitive reactance of the fourth capacitor C4 is relatively large, essentially an open circuit, thus suppressing the passage of low-frequency RF signals; as the frequency increases, its capacitive reactance decreases, weakening its blocking effect on high-frequency RF signals. The circuit described above, with the fourth capacitor C4 and the third resistor R3 connected in series, forms the basic structure of a first-order high-pass filter. The allowable frequency of the filter is mainly determined by the capacitance value of the fourth capacitor C4: the smaller the capacitance value, the higher the cutoff frequency and the more the passband is biased towards higher frequencies; and vice versa. When the frequency of the RF signal is high enough that the capacitive reactance of the fourth capacitor C4 is much smaller than the resistance value of the third resistor R3, the RF signal can pass through the module to reach the second connection point, thereby coupling to the second stub 31 and exciting the third resonance; while for lower frequency RF signals, it presents a high impedance, blocking them. By selecting the resistance value of the third resistor R3 and the capacitance value of the fourth capacitor C4, the passband center frequency of the frequency selection module 42 can be adjusted to the desired frequency point (e.g., around 7GHz), thereby ensuring that only the radio frequency signal energy of the target high-frequency band can excite the second branch 31 and the second radiating part 3 through this path to generate the desired third resonance in differential mode, while avoiding interference or coupling to other resonance modes (such as the lower-frequency first and second resonances).

[0079] Reference Figure 6 , Figure 6 This is a structural schematic diagram of the third embodiment of the antenna assembly of this application. Based on the first and second embodiments described above, the third embodiment of this application is proposed.

[0080] To further broaden the frequency range, the first panel 11 includes a third branch 5, a third radiating part 6, and a fourth panel 14; the radio frequency circuit 4 also includes a frequency modulation module 43. The third branch 5 and the fourth panel 14 are spaced apart on one side of the third panel 13 along its length. The third radiating portion 6 is located on the side of the third branch 5 facing the fourth panel 14 and is spaced apart from the fourth panel 14 along the length of the third panel 13. The end of the third radiating portion 6 facing away from the third branch 5 (i.e., Figure 6 (Point E) is connected to the fourth panel 14 via the frequency modulation module 43. Figure 6 The third branch 5 is electrically connected to the third radiating part 6 at point F in the middle, and the third branch 5 is also coupled to the third radiating part 6. The power supply module 41 is also used to transmit the radio frequency signal to the frequency modulation module 43 through the third panel 13 and the fourth panel 14; The frequency modulation module 43 is used to couple the radio frequency signal into the third radiating part 6 so that the third radiating part 6, the third branch 5, the first radiating part 2 and the first branch 21 are coupled to generate a fourth resonance, the fourth resonance frequency being different from the first resonance and the second resonance.

[0081] It is understood that the aforementioned fourth panel 14 can be another conductive planar portion of the metal plate connected to the third panel 13, used to support or connect the new resonant unit, such as a smaller metal platform extending from the same side of the third panel 13 but at a certain distance. The aforementioned RF circuit 4, as described above, is a general term encompassing all related functional circuits, including the power supply module 41, the frequency selection module 42, and the newly added frequency modulation module 43. The aforementioned length direction can refer to a specific extension dimension on the metal plate, typically the longest direction or the direction of the main structural arrangement. The aforementioned spacing can refer to two structures being spatially separated with a gap, such as a 0.5 mm air gap between two metal sheets.

[0082] refer to Figure 3 as well as Figure 5 In practical applications, after the radio frequency signal is output from the power supply module 41, in addition to exciting the main structure, a portion of the energy is conducted through the third panel 13 (the main ground plane) to the fourth panel 14 connected to it. The fourth panel 14 then transmits the signal to the frequency modulation module 43 (which is electrically connected to it) via... Figure 6 (Point F in the middle). The frequency modulation module 43 performs impedance transformation and phase adjustment on the received signal according to its own reactance parameters (for example, by changing the capacitance value of its internal variable capacitor), and then couples the processed signal into the third radiator 6. After being excited, the third radiator 6 begins to oscillate. Since it is spatially close to the third stub 5 and there is direct electromagnetic coupling, energy is exchanged between the two, forming a local secondary resonator. This local resonator is then electromagnetically coupled to the first radiator 2 and the first stub 21 through the continuous ground plane formed by the third panel 13 and the fourth panel 14, and finally excites a fourth resonance (i.e., ...) on the entire antenna system. Figure 3 (The frequency point corresponding to 51 in the text).

[0083] refer to Figure 7 , Figure 7 This is a circuit diagram of the frequency modulation module 43 in an embodiment of this application. Further, to achieve frequency modulation, the frequency modulation module 43 includes: a fifth capacitor C5; The first end of the fifth capacitor C5 is connected to the third radiating part 6, and the second end of the fifth capacitor C5 is connected to the fourth panel 14 (i.e., Figure 7 GND_F in the middle corresponds to Figure 6 (Middle F point).

[0084] It should be understood that the aforementioned fifth capacitor C5 may be a key capacitor element in the frequency modulation module 43 used to achieve frequency regulation. Its capacitance value may be fixed or variable, such as a 0402 packaged multilayer ceramic capacitor (MLCC) with a capacitance value of 1.0 picofarad, or a varactor diode whose capacitance value is controlled by voltage.

[0085] In practical applications, when the radio frequency signal is transmitted to the node where the frequency modulation module 43 is located through the third panel 13 and the fourth panel 14, the signal needs to be coupled to the third radiating part 6 through the fifth capacitor C5. The reactance of the fifth capacitor C5, the impedance of the third radiating part 6 itself, and the distributed parameters (such as parasitic capacitance and inductance) formed by the third radiating part 6 and its surrounding structures such as the third branch 5 and the fourth panel 14 together constitute a resonant circuit. Changing the capacitance value of the fifth capacitor C5 will directly change the overall equivalent capacitance of this circuit, thereby changing its resonant frequency. Therefore, by selecting different capacitance values ​​for the fifth capacitor C5, the center frequency of the fourth resonance generated by the third radiating part 6 can be adjusted. Increasing the capacitance value of the fifth capacitor C5 will decrease the frequency of the fourth resonance; conversely, decreasing its capacitance value will increase the frequency.

[0086] In addition, to achieve the above objectives, embodiments of this application also provide an electronic device, which includes an antenna assembly as described above.

[0087] It should be emphasized that, since the specific implementation of the electronic device in this embodiment can refer to the above-described antenna component embodiment, the electronic device in this embodiment can have all the beneficial effects achieved by the above-described antenna component embodiment, and this embodiment will not elaborate on this.

[0088] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An antenna assembly, characterized in that, The antenna assembly includes: A metal plate includes a substrate, a first radiating portion, and a second radiating portion, wherein the first radiating portion and the second radiating portion are electrically connected through the substrate to form a coupling. The radio frequency circuit is electrically connected to the first radiating part and the second radiating part; The radio frequency circuit is used to couple a radio frequency signal into the first radiating part or the second radiating part, so that the first radiating part and the second radiating part are coupled to generate a first resonance in differential mode. The radio frequency circuit is further configured to couple the radio frequency signal to the first radiating part and the second radiating part, so that the first radiating part and the second radiating part generate a second resonance in common mode, wherein the frequency of the first resonance is different from that of the second resonance.

2. The antenna assembly as claimed in claim 1, characterized in that, The substrate includes: a first panel, a second panel, and a third panel; The first panel and the second panel are disposed on one side of the third panel along the length direction of the third panel; The first radiating part is disposed on the side of the first panel facing the second panel, and the second radiating part is disposed on the side of the second panel facing the first panel. The first radiating part and the second radiating part are spaced apart along the length direction of the third panel, and the first radiating part and the second radiating part are spaced apart along the width direction of the third panel.

3. The antenna assembly as described in claim 2, characterized in that, The radio frequency circuit includes: a power supply module; The power supply module is electrically connected to the first radiating part and the third panel, respectively. The power supply module is used to couple the radio frequency signal into the first radiating part, so that the first radiating part and the second radiating part are coupled to generate a first resonance in differential mode; The power supply module is further configured to couple the radio frequency signal into the first radiating part, and couple the radio frequency signal into the second radiating part through the third panel and the second panel, so that the first radiating part and the second radiating part generate a second resonance in common mode.

4. The antenna assembly as described in claim 3, characterized in that, The metal plate further includes: a first branch; The first branch is located on the side of the first radiating portion facing the third panel; One end of the first branch facing away from the first radiating part is electrically connected to the power supply module. The power supply module is electrically connected to the first connection point corresponding to the interval between the third panel and the first branch. The first branch, the first radiating part and the second radiating part are coupled through the substrate. The power supply module is also used to couple the radio frequency signal into the first radiating part through the first branch.

5. The antenna assembly as described in claim 4, characterized in that, The power supply module includes: an RF port, a first resistor, a second resistor, and a first capacitor to a third capacitor; The radio frequency port is used to receive the radio frequency signal. The first end of the first capacitor is connected to the radio frequency port. The second end of the first capacitor is connected to the first end of the first resistor and the first end of the second resistor. The second end of the second resistor is connected to the first connection point. The second end of the first resistor is connected to the first end of the second capacitor and the first end of the third capacitor. The second end of the third capacitor is connected to the first connection point. The second end of the second capacitor is connected to the first branch.

6. The antenna assembly as claimed in claim 4, characterized in that, The metal plate further includes a second branch; the radio frequency circuit further includes a frequency selection module. The second branch is located on the side of the second radiating portion facing the third panel; One end of the second branch facing away from the second radiating part is electrically connected to the frequency selection module. The frequency selection module is electrically connected to the second connection point corresponding to the interval between the third panel and the second branch. The first branch, the second branch, the first radiating part and the second radiating part are coupled through the substrate. The power supply module is further configured to couple the radio frequency signal to the second branch through the third panel and the frequency selection module when the frequency of the radio frequency signal is consistent with the frequency allowed by the frequency selection module, so that the second branch, the second radiating part and the first radiating part are coupled to generate the third resonance in the differential mode; The frequency of the third resonance in the differential mode is different from that of the first resonance and the second resonance.

7. The antenna assembly as claimed in claim 6, characterized in that, The frequency selection module includes: a third resistor and a fourth capacitor; The first end of the third resistor is connected to the second branch, the second end of the third resistor is connected to the first end of the fourth capacitor, and the second end of the fourth capacitor is connected to the second connection point.

8. The antenna assembly as claimed in claim 4, characterized in that, The first panel includes: a third branch, a third radiating section, and a fourth panel; the radio frequency circuit further includes: a frequency modulation module; The third branch and the fourth panel are spaced apart on one side of the third panel along the length direction of the third panel. The third radiating part is located on the side of the third branch facing the fourth panel and is spaced apart from the fourth panel along the length direction of the third panel. The end of the third radiating part facing away from the third branch is electrically connected to the fourth panel through the frequency modulation module. The third branch is also coupled to the third radiating part. The power supply module is also used to transmit the radio frequency signal to the frequency modulation module through the third panel and the fourth panel; The frequency modulation module is used to couple the radio frequency signal into the third radiating part, so that the third radiating part, the third branch, the first radiating part and the first branch are coupled to generate a fourth resonance, the fourth resonance frequency being different from the first resonance and the second resonance.

9. The antenna assembly as claimed in claim 8, characterized in that, The frequency modulation module includes: a fifth capacitor; The first end of the fifth capacitor is connected to the third radiating component, and the second end of the fifth capacitor is connected to the fourth panel.

10. An electronic device, characterized in that, The electronic device includes an antenna assembly as claimed in any one of claims 1 to 9.

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