Signal feeding assembly, antenna module and electronic device

Abstract

The application provides a signal feed assembly, which comprises a substrate, a signal coupling unit, a switching unit and a transmission unit. The switching unit comprises a control terminal, a common terminal and at least two switching output terminals. The control terminal and the common terminal are electrically connected to the transmission unit, so as to transmit baseband signals and radio frequency signals through the transmission unit. The signal coupling unit is arranged apart from a radiating element, so as to transmit radio frequency signals through the radiating element to generate multiple radiation modes. The signal coupling unit comprises at least two coupling patches, each of which is electrically connected to a corresponding switching output terminal. The switching unit controls the switching of the coupling patches through the switching output terminals to switch the multiple radiation modes. The application comprises a modular signal feed assembly and a metal radiating element, so as to form a corresponding antenna module to cover multiple frequency bands, improve the frequency width and have the best antenna efficiency. The application also provides an antenna module and an electronic device.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to signal feed components, antenna modules and electronic devices. Background Technology

[0002] With the advancement of wireless communication technology, electronic devices such as mobile phones and personal digital assistants are constantly evolving towards greater functionality, thinner designs, and faster, more efficient data transmission. However, the space available to accommodate antennas is becoming increasingly limited, and the bandwidth requirements for antennas are constantly increasing with the continuous development of wireless communication technology. Therefore, how to design antennas with wider bandwidth and better efficiency within a limited space is a crucial challenge in antenna design. Summary of the Invention

[0003] This application provides a signal feed component, an antenna module, and an electronic device. The signal feed component is modularly designed and combined with a metal radiating element to form a corresponding antenna module, which covers multiple frequency bands, improves bandwidth, and achieves optimal antenna efficiency.

[0004] A signal feed component includes a substrate, a signal coupling unit, a switching unit, and a transmission unit. The signal coupling unit, switching unit, and transmission unit are all disposed on the substrate. The switching unit includes a control terminal, a common terminal, and at least two switching output terminals. The control terminal and the common terminal are electrically connected to the transmission unit for transmitting and receiving baseband and radio frequency signals through the transmission unit. The signal coupling unit is spaced apart from a radiating element to transmit and receive the radio frequency signals through the radiating element, thereby generating multiple radiation modes. The signal coupling unit includes at least two coupling plates, each of which is electrically connected to a corresponding switching output terminal. The switching unit controls the switching of the coupling plates through the switching output terminals to switch the multiple radiation modes.

[0005] An antenna module includes a radiating element and the aforementioned signal feeding component, wherein the signal feeding component is spaced apart from the radiating element to couple a signal to the radiating element through coupling with the radiating element, and the radiating element then transmits and / or receives the signal.

[0006] An electronic device includes the frame and the signal feed component described above. The frame is made of a metal material, and the signal feed component is disposed within the electronic device and spaced apart from the frame to couple a signal to the frame through coupling with the frame, so that the frame can transmit and / or receive the signal.

[0007] This application modularizes the signal feed component, allowing for easy integration into the metal casing of electronic devices. Radiated energy is then coupled to the metal casing via coupling, and the switching unit enables switching between different resonant modes, achieving multi-band operation. Compared to existing metal-cased antenna designs, the antenna module in this application eliminates the need for customized metal casing shapes, meeting the operational requirements of 3G / 4G / 5G-Sub 6 / WIFI / GPS frequency bands. Furthermore, since the antenna in this application does not require custom-designed breaks, structures, and circuitry on the metal casing, but can utilize existing metal casing designs, product development time and costs are effectively shortened. The simplified design significantly enhances product competitiveness. Attached Figure Description

[0008] Figure 1 A schematic diagram of an antenna module provided in an embodiment of this application;

[0009] Figure 2 for Figure 1 The circuit diagram of the signal feed component in the antenna module shown is shown.

[0010] Figures 3A to 3D for Figure 2 The diagram shows the switching unit in the signal feed component switching to different states;

[0011] Figure 4 for Figure 1 The S-parameter (scattering parameter) curves of the antenna module shown are as follows;

[0012] Figure 5 for Figure 1 The efficiency curve of the antenna module is shown.

[0013] Figure 6 An exploded view showing the application of the signal feed component provided in this application embodiment to an electronic device;

[0014] Figure 7 for Figure 6 A partial schematic diagram of the electronic device shown from another angle;

[0015] Figure 8 for Figure 6 A schematic diagram of the electronic device from another angle.

[0016] Explanation of main component symbols

[0017]

[0018]

[0019] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] It should be noted that, in the embodiments of this application, "at least one" refers to one or more, and "more than one" refers to two or more. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0022] It should be understood that, unless otherwise stated, " / " in this application means "or". For example, A / B can mean A or B. "A and / or B" in this application is merely a description of the relationship between related objects, indicating that there can be three relationships: only A exists, only B exists, and A and B exist.

[0023] It should be noted that in the embodiments of this application, the terms "first," "second," etc., are used only for descriptive purposes and should not be construed as indicating or implying relative importance, nor as indicating or implying order. Features specified as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0024] It should be noted that, in the embodiments of this application, the term "height" refers to the projected length in the direction perpendicular to the reference stratum. The terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] With the booming development of the mobile communications industry, smartphones have become essential portable electronic products in modern life. Among the many products available, slimness, a suitable screen size, and unique design are among the main factors consumers consider when choosing a product. Furthermore, product specifications are constantly being updated, emphasizing highly integrated, high-specification hardware communication systems. These include essential 2G / 3G / 4G / 5G-Sub 6 / BT / Wi-Fi communication networks, as well as potential built-in sensor devices for future mobile healthcare trends. In this trend emphasizing slimness, design, and high system integration, improving space utilization has become a crucial issue in antenna development.

[0026] Taking current smartphone designs as an example, the common design uses a metal frame and metal casing. This design not only enhances structural strength but also provides a very good aesthetic appeal. However, for traditional antenna designs, the metal casing significantly impacts antenna characteristics, making this a crucial issue in antenna design. A common approach in current antenna designs is to incorporate a multi-breakpoint design into the metal casing, integrating this portion of the casing into the antenna itself. This design allows for good integration between the antenna and the overall design, effectively improving space utilization. However, the metal casing still needs to be customized to match the initial antenna design; each product requires custom-designed breaks, structures, and circuitry, making it impossible to directly reuse designs from other products, thus increasing product development time and costs.

[0027] Another common antenna design is the slot-coupled design, which couples energy to the slot antenna via feed coupling. When applied to the metal frame or casing of a mobile phone, the metal casing can be directly designed as a slot antenna, effectively utilizing space. This design still requires customizing the metal casing into a slot pattern, incorporating either a traditional 1 / 2λ closed slot length or a 1 / 4λ open slot length, to meet system frequency and bandwidth requirements, or using adjustable switching elements to switch the resonant frequency. However, the operating bandwidth of this design is still insufficient to cover the multi-band operation requirements of 2G / 3G / 4G / 5G-Sub6 / BT / WIFI.

[0028] Therefore, this application provides a signal feed component, an antenna module, and an electronic device. By using a modularly designed signal feed component combined with a metallic radiating element, a corresponding antenna module can be constructed to cover multiple frequency bands, improve bandwidth, and achieve optimal antenna efficiency.

[0029] Specifically, please refer to Figure 1It is understood that this application provides a signal feeding component 10. The signal feeding component 10 includes a substrate 11, a signal coupling unit 12, a switching unit 13, a first transmission line 14, and a second transmission line 15.

[0030] In this embodiment, the substrate 11 is a microwave substrate. Of course, in other embodiments, the substrate 11 can be a dielectric substrate, such as a printed circuit board (PCB), a ceramic substrate, or other dielectric substrates, and is not specifically limited here.

[0031] In this embodiment, the signal coupling unit 12 can be formed on the substrate 11 by printing or etching. In this embodiment, the signal coupling unit 12 includes three coupling plates, namely a first coupling plate 121, a second coupling plate 122, and a third coupling plate 123.

[0032] The first to third coupling plates 121, 122, and 123 are all thin metal sheets and are coplanar. The first to third coupling plates 121, 122, and 123 are spaced apart from each other. In this embodiment, the signal coupling unit 12 can be formed by providing a complete radiating sheet and opening corresponding slits on the radiating sheet. For example, the signal coupling unit 12 is generally rectangular, with a first slit 124 and a second slit 125. The first slit 124 is approximately L-shaped, extending a distance from one short side 12a of the signal coupling unit 12 along a direction parallel to its long side 12b and towards the other short side 12a, then bending at a right angle to extend along a direction parallel to the short side 12a and towards its long side 12b, until it interrupts the long side 12b. In this embodiment, the short side 12a and the long side 12b are perpendicular.

[0033] The second slit 125 is also generally L-shaped, with its two ends respectively located on the long side 12b and short side 12a of the signal coupling unit 12. In this embodiment, one end of the first slit 124 and the second slit 125 are spaced apart on the same short side 12a of the signal coupling unit 12. The other ends of the first slit 124 and the second slit 125 are spaced apart on the same long side 12b of the signal coupling unit 12. Thus, the first slit 124 and the second slit 125 divide the signal coupling unit 12 into first to third coupling plates 121, 122, and 123 spaced apart. The first coupling plate 121 is rectangular. The second coupling plate 122 and the third coupling plate 123 are both L-shaped. The areas of the first to third coupling plates 121, 122, and 123 gradually increase.

[0034] Of course, the number, shape, and structure of the coupling plates are not limited in this embodiment. For example, the number of coupling plates may be one, two, or more. The shape of the coupling plates may also be triangular, square, rectangular, circular, polygonal, etc.

[0035] Please refer to the following: Figure 2 The switching unit 13 is disposed on the substrate 11 and is electrically connected to the signal coupling unit 12, the first transmission line 14, and the second transmission line 15. In this embodiment, the example is given where the signal coupling unit 12 includes three coupling plates (i.e., the first to third coupling plates 121, 122, and 123) and the switching unit 13 includes four switching output terminals.

[0036] Specifically, the switching unit 13 can be a QAT3516 chip, which includes a control terminal 131, a common terminal RFC, and four switching output terminals, namely the first to fourth switching output terminals RF1, RF2, RF3, and RF4.

[0037] The control terminal 131 is electrically connected to the first transmission line 14 via a connector 131a. The first transmission line 14 is then electrically connected to a baseband circuit 201 via a corresponding connector 131b. Thus, the first transmission line 14 can connect the baseband circuit 201 and the control terminal 131, thereby transmitting control signals from the baseband circuit 201.

[0038] One end of the common terminal RFC is electrically connected to the second transmission line 15 via a connector 131c. The second transmission line 15 is then electrically connected to an RF circuit 202 via a corresponding connector 131d. Thus, the second transmission line 15 can connect the RF circuit 202 and the common terminal RFC, thereby transmitting RF signals, such as high-frequency signals, from the RF circuit 202.

[0039] One end of the first switching output terminal RF1 is electrically connected to the first coupling plate 121 through the first matching circuit 133. One end of the second switching output terminal RF2 is electrically connected to the second coupling plate 122 through the second matching circuit 134. One end of the third switching output terminal RF3 is electrically connected to the third coupling plate 123 through the third matching circuit 135. One end of the fourth switching output terminal RF4 is grounded through the fourth matching circuit 136.

[0040] In this embodiment, the first matching circuit 133 is an inductor with an inductance value of 2.9nH, the second matching circuit 134 is an inductor with an inductance value of 0.6nH, the third matching circuit 135 is a capacitor with a capacitance value of 2.5pF, and the fourth matching circuit 136 is an inductor with an inductance value of 3nH. Of course, in other embodiments of this application, the circuit structures of the first to fourth matching circuits 133, 134, 135, and 136 are not limited. For example, the first to fourth matching circuits 133, 134, 135, and 136 may also include other capacitors, inductors, and / or combinations of capacitors and inductors.

[0041] It is understood that, in this embodiment of the application, the common terminal RFC can also be grounded through a matching unit 137. In one embodiment of the application, the matching unit 137 includes a first matching element 137a and a second matching element 137b. One end of the first matching element 137a and the second matching element 137b are both electrically connected to the common terminal RFC and the connector 131c. The other ends of the first matching element 137a and the second matching element 137b are both grounded. That is, the first matching element 137a and the second matching element 137b are connected in parallel between the common terminal RFC and ground. In one embodiment, the first matching element 137a is a capacitor with a capacitance of 0.9pF, and the second matching element 137b is an inductor with an inductance of 4.7nH. Similarly, in this embodiment of the application, the specific circuit structure of the matching unit 137 is not limited. For example, the matching unit 137 may include other capacitors, inductors, and / or combinations of capacitors and inductors.

[0042] Obviously, in this embodiment, the first matching circuit 133, the second matching circuit 134, the third matching circuit 135, the fourth matching circuit 136, and the matching unit 137 are all composed of distributed electronic components, that is, they are each composed of distributed circuits. Of course, in this embodiment, the first matching circuit 133, the second matching circuit 134, the third matching circuit 135, the fourth matching circuit 136, and the matching unit 137 can also be lumped circuits, that is, they can be composed of independent chips and / or modules.

[0043] It is understood that in the embodiments of this application, the first transmission line 14 can be a signal transmission component such as a cable, stranded wire, flexible circuit board, rigid circuit board, or metal pins, and is not specifically limited herein. Similarly, the second transmission line 15 can be a signal transmission component such as a cable, stranded wire, flexible circuit board, rigid circuit board, or metal pins, and is not specifically limited herein.

[0044] It is understood that in this embodiment, the first transmission line 14 and the second transmission line 15 constitute a corresponding transmission unit 16. Of course, in other embodiments, the first transmission line 14 and the second transmission line 15 can be integrated together, that is, the signal feed component 10 shares a single transmission unit 16, i.e., a single transmission line, to transmit and receive radio frequency signals (e.g., high-frequency signals) and baseband signals (e.g., control signals).

[0045] It is understood that in this embodiment, the connectors 131a, 131b, 131c, and 131d can be connectors or solder joints, etc., and are not specifically limited here. That is, in this embodiment, the connection method between the control terminal 131, the first transmission line 14, and the baseband circuit 201 is not limited. For example, the control terminal 131, the first transmission line 14, and the baseband circuit 201 can be connected by connectors, soldering, etc. Similarly, in this embodiment, the connection method between the common terminal RFC, the second transmission line 15, and the radio frequency circuit 202 is not limited. For example, the common terminal RFC, the second transmission line 15, and the radio frequency circuit 202 can be connected by connectors, soldering, etc.

[0046] It is understood that, in the embodiments of this application, when using the signal feed component 10, it can be connected to a radiating element 30 (see...). Figure 7 and Figure 8 The radiating element 30 and the signal coupling unit 12 on the substrate 11 are spaced apart. Furthermore, the signal feed assembly 10 and the radiating element 30 together constitute the antenna module 100. The antenna module 100 can couple signals from the signal coupling unit 12 to the radiating element 30 through the coupling between the signal coupling unit 12 and the radiating element 30, and then the radiating element 30 can transmit and / or receive signals, operating in multiple modes. Simultaneously, the antenna module 100 also utilizes the operation of the switching unit 13 to switch between the multiple modes, thereby achieving multiple broadband operations.

[0047] For example, please refer to the following: Figures 3A to 3D This is a schematic diagram illustrating the operating principle of the switching unit 13. Wherein, in Figures 3A to 3D In the embodiment shown, the switching unit 13 is a QAT3516 chip as an example for illustration. Figures 3A to 3DThe internal circuit structure of the switching unit 13 is shown (the control terminal 131 is not shown). The switching unit 13 internally includes switches S1-S10 and a matching module Ct. The first ends of switches S1-S4 are connected together and electrically connected to the common terminal RFC. The second ends of switches S1-S4 are electrically connected to their respective switching output terminals. For example, the second end of switch S1 is electrically connected to the first switching output terminal RF1. The second end of switch S2 is electrically connected to the second switching output terminal RF2. The second end of switch S3 is electrically connected to the third switching output terminal RF3. The second end of switch S4 is electrically connected to the fourth switching output terminal RF4. The first end of switch S5 is electrically connected to the second end of switch S1 and the first switching output terminal RF1, and the second end of switch S5 is grounded. The first end of switch S6 is electrically connected to the second end of switch S2 and the second switching output terminal RF2, and the second end of switch S6 is grounded. The first end of switch S7 is electrically connected to the second end of switch S3 and the third switching output terminal RF3, and the second end of switch S7 is grounded. The first terminal of the switch S8 is electrically connected to the second terminal of the switch S4 and the fourth switching output terminal RF4, and the second terminal of the switch S8 is grounded.

[0048] The matching module Ct includes a first matching capacitor Ct_0 and a second matching capacitor Ct_1. The first terminals of the first matching capacitor Ct_0 and the second matching capacitor Ct_1 are connected together and electrically connected to the first terminals of switches S1-S4 and the common terminal RFC. The second terminal of the first matching capacitor Ct_0 is grounded through switch S9. The second terminal of the second matching capacitor Ct_1 is grounded through switch S10. In one embodiment, the capacitance of the first matching capacitor Ct_0 is 0.5pF, and the capacitance of the second matching capacitor Ct_1 is 1pF.

[0049] Please see Figure 3A When the switching unit 13 switches to the third switching output terminal RF3 and the fourth switching output terminal RF4 (for example, by closing the switches S3 and S4 inside the switching unit 13 and opening the switches S1, S2, S5-S10), so as to conduct the third switching output terminal RF3 and the fourth switching output terminal RF4, the antenna module 100 can excite the first working mode to generate a radiation signal in the first radiation frequency band.

[0050] Please see Figure 3BWhen the switching unit 13 switches to the second switching output terminal RF2 and the fourth switching output terminal RF4 (for example, by closing the switches S2 and S4 inside the switching unit 13 and opening the switches S1, S3, S5-S10), so as to conduct the second switching output terminal RF2 and the fourth switching output terminal RF4, the antenna module 100 can excite the second working mode to generate a radiation signal in the second radiation frequency band.

[0051] Please see Figure 3C When the switching unit 13 switches to the first switching output terminal RF1 (for example, by closing the switch S1 inside the switching unit 13 and opening the switches S2-S10), so as to conduct the first switching output terminal RF1, the antenna module 100 can excite the third working mode to generate a radiation signal in the third radiation frequency band.

[0052] Please see Figure 3D When the switching unit 13 switches to the first switching output terminal RF1, the third switching output terminal RF3, and the second matching element 137b (for example, by closing the switches S1, S3, and S10 inside the switching unit 13 and opening the switches S2, S4, and S5-S9), so as to conduct the first switching output terminal RF1, the third switching output terminal RF3, and the second matching element 137b, the antenna module 100 can excite the fourth operating mode to generate a radiation signal in the fourth radiation frequency band.

[0053] In this embodiment, the first operating mode is a first mid-to-high frequency mode. The frequency of the first radiation band is 1805-1880MHz. The second operating mode is a second mid-to-high frequency mode. The frequency of the second radiation band includes 1880-2690MHz. The third operating mode is a first high frequency mode. The frequency of the third radiation band includes 3300-4200MHz. The fourth operating mode is a second high frequency mode. The frequency of the fourth radiation band includes 4400-5000MHz. Clearly, by setting the switching unit 13 to achieve different path switching combinations, the antenna module 100 achieves multi-band operation to meet the system operation requirements of 2G / 3G / 4G / 5G-Sub 6.

[0054] Of course, in this embodiment, the frequency of the antenna module 100 is not limited. For example, the desired frequency can be adjusted by adjusting parameters such as the shape, length, and width of the antenna module 100. Additionally, the shape, length, and width of the coupling plate can also be adjusted according to the desired frequency.

[0055] Understandable, such as Figure 7 and Figure 8As shown, in one embodiment, the radiating element 30 is a metal frame of an electronic device (described in detail below) and is spaced apart from the substrate 11. Of course, in this embodiment, the material and structure of the radiating element 30 are not limited. For example, the radiating element 30 can be any conductor, such as iron, copper foil on a PCB flexible board, or a conductor used in a Laser Direct Structuring (LDS) process.

[0056] It is understood that in the embodiments of this application, the radiating element 30 is arranged in parallel with the substrate 11, and the distance between the two is approximately 0.2 mm.

[0057] It is understood that the specific structure of the radiating element 30 and / or its connection relationship with other elements are not limited in the embodiments of this application. For example, the side end of the radiating element 30 may be connected to ground or not. Furthermore, the radiating element 30 may or may not have any breaks, grooves, gaps, etc.

[0058] Please refer to the following: Figure 4 This is a graph showing the S-parameters (scattering parameters) of the antenna module 100. Curve 41 represents the value when the switching unit 13 switches to... Figure 3A The S11 value of the antenna module 100 in the indicated state. Curve 42 represents the value when the switching unit 13 switches to... Figure 3B The S11 value of the antenna module 100 in the indicated state. Curve 43 represents the value when the switching unit 13 switches to... Figure 3C The S11 value of the antenna module 100 in the indicated state. Curve 44 represents the value when the switching unit 13 switches to... Figure 3D The S11 value of the antenna module 100 in the indicated state.

[0059] Please refer to the following: Figure 5 The graph shows the overall efficiency of the antenna module 100. Curve 51 represents the efficiency when the switching unit 13 switches to... Figure 3A The curve 52 shows the overall efficiency of the antenna module 100 when the switching unit 13 switches to the indicated state. Figure 3B The curve 53 shows the overall efficiency of the antenna module 100 when the switching unit 13 switches to the indicated state. Figure 3C The curve 54 shows the overall efficiency of the antenna module 100 when the switching unit 13 switches to the indicated state. Figure 3D The overall efficiency of the antenna module 100 in the state shown.

[0060] Obviously, by Figures 3A to 3D , Figure 4 ,and Figure 5As is known, by setting the switching unit 13, different path switching combinations can be realized, enabling the antenna module 100 to achieve multi-band operation to meet the system operation requirements of 2G / 3G / 4G / 5G-Sub 6.

[0061] I understand, please refer to the above as well. Figure 6 In this embodiment, the signal feed component 10 can be applied to an electronic device 200 and together with the metal components of the electronic device 200, constitutes the antenna module 100 to transmit and receive radio waves to transmit and exchange wireless signals. The electronic device 200 can be a handheld communication device (e.g., a mobile phone), a folding device, a smart wearable device (e.g., a watch, headphones, etc.), a tablet computer, a personal digital assistant (PDA), etc., and is not specifically limited herein.

[0062] It is understood that the electronic device 200 may employ one or more of the following communication technologies: Bluetooth (BT) communication technology, Global Positioning System (GPS) communication technology, Wireless Fidelity (Wi-Fi) communication technology, Global System for Mobile Communications (GSM) communication technology, Wideband Code Division Multiple Access (WCDMA) communication technology, Long Term Evolution (LTE) communication technology, 5G communication technology, Sub-6G communication technology, and other future communication technologies.

[0063] In this embodiment of the application, the electronic device 200 is described as a mobile phone.

[0064] Please refer to it again. Figure 6 , Figure 7 and Figure 8 In one embodiment, the electronic device 200 includes at least the baseband circuit 201 (see...). Figure 7 ), Radio frequency circuit 202 (reference) Figure 7 ), frame 203, back panel 204, system circuit board 205, battery 206, and display module 207.

[0065] The frame 203 is made of metal or other conductive material. The back plate 204 can also be made of metal or other conductive material. The frame 203 is disposed on the edge of the back plate 204, and the two can be integrally formed. An opening (not shown in the figure) is provided on one side of the frame 203 opposite to the back plate 204 for accommodating the display module 207. The display module 207 can be combined with a touch sensor to form a touch screen. The touch sensor is also called a touch panel or touch-sensitive panel.

[0066] The system circuit board 205 can be disposed in the accommodating space formed by the frame 203 and the back plate 204, and the baseband circuit 201 and the radio frequency circuit 202 are disposed thereon at intervals.

[0067] The battery 206 may be disposed on the system circuit board 205, or the system circuit board 205 may be disposed around the battery 206. The battery 206 is used to provide power to the electronic components, modules, circuits, etc. of the electronic device 200.

[0068] It is understood that in other embodiments of this application, the electronic device 200 may also include one or more of the following components, such as a processor, circuit board, memory, input / output circuit, audio components (e.g., microphone and speaker), multimedia components (e.g., front-facing camera and / or rear-facing camera), sensor components (e.g., proximity sensor, distance sensor, ambient light sensor, accelerometer, gyroscope, magnetic sensor, pressure sensor and / or temperature sensor), etc., which will not be elaborated here.

[0069] It is understood that when the signal feed component 10 is applied to the electronic device 200, the signal feed component 10 can be disposed within the electronic device 200, and part of the metal frame 203 constitutes the radiating element 30, together forming the antenna module 100 of the electronic device 200. Specifically, a slot 208 is provided on the frame 203. The slot 208 separates the frame 203 to divide the frame 203 into a first part 203a and a second part 203b spaced apart. An opening 209 is also provided on the back plate 204. The opening 209 is disposed along the long side of the frame 203 (i.e., the long metal side of the electronic device 200) and is generally strip-shaped. In this embodiment, the opening 209 also communicates with the slot 208 and together forms a generally T-shaped structure. The interior of the electronic device 200 corresponding to the opening 209 is used to accommodate the signal feed component 10. The signal feed component 10 can be disposed inside the electronic device 200 corresponding to the opening 209, and is arranged parallel to the first portion 203a at a distance. A portion of the first portion 203a constitutes the radiating element 30. The second portion 203b can be grounded. Specifically, in this embodiment, the signal feed component 10 in the antenna module 100 is disposed perpendicular to the back plate 204 and parallel to the first portion 203a. The signal coupling unit 12 on the signal feed component 10 is disposed on the side of the substrate 11 facing away from the first portion 203a, that is, the signal coupling unit 12 is disposed facing away from the first portion 203a.

[0070] It is understood that, in one embodiment, the gap 208 and the opening 209 may be filled with insulating materials, such as plastic, rubber, glass, wood, ceramics, etc., but are not limited thereto.

[0071] Of course, in other embodiments of this application, the gap 208 and / or the opening 209 can be omitted, that is, the signal feed component 10 in the antenna module 100 is directly disposed inside the electronic device 200. It is only necessary to ensure that the signal feed component 10 and the frame 203 of the electronic device 200 are spaced apart, and that a portion of the frame 203 constitutes the radiating element 30, so that the signal feed component 10 and the portion of the frame 203 together constitute the corresponding antenna module 100, thereby effectively realizing the transmission and reception of multi-frequency signals.

[0072] For example, in other embodiments of this application, when the antenna module 100 is applied to the electronic device 200, the signal feed component 10 can also be disposed inside the electronic device 200, and the antenna module 100 includes an independent radiating element 30, that is, the radiating element 30 is not composed of a partially metal frame 203.

[0073] Obviously, in this embodiment, by modularizing the signal feed component 10 in the antenna module 100, it can be easily integrated into the metal casing of the electronic device 200. The radiated energy is then coupled to the metal casing via coupling (i.e., through the signal coupling unit 12), and the switching unit 13 enables switching between different resonant modes, achieving multi-band operation. Compared to existing metal casing antenna designs, the antenna module 100 in this application does not require customized metal casing shape design to meet the operational requirements of 3G / 4G / 5G-Sub 6 / WIFI / GPS frequency bands. Furthermore, since the antenna in this application does not require custom-designed special breaks, structures, and circuits on the metal casing, but can utilize existing metal casing designs, product development time and costs can be effectively shortened. Its design is simpler, effectively improving product competitiveness.

[0074] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the preferred embodiments above, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application. Those skilled in the art can also make other changes within the spirit of this application and use them in the design of this application, as long as they do not deviate from the technical effects of this application. These changes made in accordance with the spirit of this application should all be included within the scope of protection claimed in this application.

Claims

1. A signal feed-through assembly, characterized by The signal feeding assembly comprises a substrate, a signal coupling unit, a switching unit and a transmission unit, the signal coupling unit, the switching unit and the transmission unit are arranged on the substrate, the switching unit comprises a control terminal, a common terminal and at least two switching output terminals, the control terminal and the common terminal are electrically connected to the transmission unit, for transmitting and receiving base frequency signals and radio frequency signals through the transmission unit, the signal coupling unit is arranged spaced apart from a radiating element, and the signal coupling unit is used for transmitting and receiving the radio frequency signals through the radiating element to generate a plurality of radiation modes, the signal coupling unit comprises at least two coupling patches, each coupling patch is electrically connected to a corresponding switching output terminal, and the switching unit is used for controlling the switching of the coupling patches through the switching output terminals to switch the plurality of radiation modes. The substrate and the radiating element are arranged spaced apart, and the signal coupling unit is arranged on a side of the substrate away from the radiating element.

2. The signal feed assembly of claim 1, wherein: The switching unit further comprises at least two matching circuits, each switching output terminal is electrically connected to a corresponding coupling patch or ground through a corresponding matching circuit, and the matching circuit is a lumped circuit or a distributed circuit.

3. The signal feed assembly of claim 1, wherein: The switching unit further comprises a matching unit, the common terminal is grounded through the matching unit, and the matching unit is a lumped circuit or a distributed circuit.

4. The signal feed assembly of claim 1, wherein: The transmission unit comprises a first transmission line and a second transmission line, the control terminal is electrically connected to a base frequency circuit through the first transmission line to transmit and receive the base frequency signals, and the common terminal is electrically connected to a radio frequency circuit through the second transmission line to transmit and receive the radio frequency signals.

5. The signal feed assembly of claim 1, wherein: The transmission unit comprises a transmission line, the control terminal and the common terminal are electrically connected to the transmission line, and are electrically connected to a base frequency circuit and a radio frequency circuit through the transmission line.

6. The signal feed assembly of claim 1, wherein: The signal coupling unit comprises three coupling patches, the three coupling patches are arranged spaced apart, the switching unit comprises four switching output terminals, three switching output terminals are electrically connected to corresponding coupling patches, and the other switching output terminal is grounded, by switching to different coupling patches, so that the radiating element excites at least two modes.

7. The signal feed assembly of claim 6, wherein: The at least two modes comprise a first middle-high frequency mode, a second middle-high frequency mode, a first high frequency mode and a second high frequency mode.

8. An antenna module, characterized by: The antenna module comprises a radiating element and a signal feeding assembly as claimed in any one of claims 1 to 7, the signal feeding assembly is arranged spaced apart from the radiating element to couple signals to the radiating element through coupling with the radiating element, and then the radiating element transmits and / or receives signals.

9. An electronic device, comprising: The electronic device comprises a frame made of a metal material and a signal feeding assembly as claimed in any one of claims 1 to 7, the signal feeding assembly is arranged in the electronic device and spaced apart from the frame as a radiating element to couple signals to the frame through coupling with the frame, and then the frame transmits and / or receives signals.

10. The electronic device of claim 9, wherein: The frame is provided with a gap, the electronic device is provided with an opening, the opening is communicated with the gap, the signal feeding assembly is arranged in the opening, and is arranged in parallel with the frame and adjacent to the gap.

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