Circularly polarized wave regulation and control method and device and electronic equipment

Abstract

The invention discloses a circularly polarized wave regulation and control method and device and electronic equipment. The radiator comprises a first radiation section and a second radiation section which are connected in a bending manner. The length between the first grounding point and the connection point is smaller than or equal to 1 / 16 wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is smaller than 1 / 16 wavelength of the second frequency band. The signal source is used for exciting the radiator to form a first resonant mode and a second resonant mode supporting a second frequency band. And the second resonant mode is a 1 / 2 wavelength mode of a second frequency band formed between the first free end and the second free end. The resonant current of the second resonant mode includes a third resonant current between the first free end and the connection point and a fourth resonant current between the connection point and the second free end. The third resonance current and the fourth resonance current form circularly polarized waves, and the radiation direction of the circularly polarized waves is related to the length proportion of the first radiation section and the second radiation section. The circular polarization performance can be improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a method, device and electronic equipment for controlling circularly polarized waves. Background Art

[0002] Satellite communications generally use circularly polarized antennas. Currently, satellite communication antennas used in mobile phones, wearable devices and other electronic devices are all linearly polarized antennas. If mobile phones, wearable devices and other electronic devices use linearly polarized antennas, it will lead to at least 3dB of polarization mismatch, that is, at least 3dB of performance degradation, resulting in reduced circular polarization efficiency of mobile phones, wearable devices and other electronic devices. Therefore, how to improve the circular polarization performance of electronic devices has become a technical problem that needs to be solved. Summary of the invention

[0003] The present application provides a method, device and electronic device for controlling circularly polarized waves to improve the circular polarization performance of electronic equipment.

[0004] In a first aspect, the present application provides an electronic device, including an antenna assembly, wherein the antenna assembly includes:

[0005] A radiator, comprising a first radiating section and a second radiating section connected in a bent manner, the radiator further comprising a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point being the connection between the first radiating section and the second radiating section, the first free end being an end of the first radiating section away from the connection point, and the second free end being an end of the second radiating section away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; and

[0006] A signal source, the signal source is electrically connected to the feeding point, the signal source is used to excite the radiator to form a first resonance mode supporting a first frequency band and a second resonance mode supporting a second frequency band, the first resonance mode forms a first resonance current between the first free end and the first grounding point and returns to the ground through the first grounding point, the first resonance mode forms a second resonance current between the second free end and the first grounding point and returns to the ground through the first grounding point; the second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, the resonance current of the second resonance mode includes a third resonance current located between the first free end and the connection point and a fourth resonance current located between the connection point and the second free end, the third resonance current and the fourth resonance current are used to form a circularly polarized wave, and the radiation direction of the circularly polarized wave is related to the length ratio of the first radiation section and the second radiation section.

[0007] In a second aspect, the present application provides a method for controlling circularly polarized waves, which is applied to an electronic device, wherein the electronic device includes an antenna assembly, the antenna assembly includes a radiator and a signal source, the radiator includes a first radiating segment and a second radiating segment connected in a bent manner, the radiator also includes a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point being the connection between the first radiating segment and the second radiating segment, the first free end being an end of the first radiating segment away from the connection point, and the second free end being an end of the second radiating segment away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; the signal source is electrically connected to the feeding point , the signal source is used to excite the radiator to form a first resonance mode supporting a first frequency band and a second resonance mode supporting a second frequency band, the first resonance mode forms a first resonance current between the first free end and the first grounding point and returns to the ground through the first grounding point, and the first resonance mode forms a second resonance current between the second free end and the first grounding point and returns to the ground through the first grounding point; the second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, the resonance current of the second resonance mode includes a third resonance current between the first free end and the connection point and a fourth resonance current between the connection point and the second free end, and the third resonance current and the fourth resonance current are used to form a circularly polarized wave; the method comprises:

[0008] The ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment is regulated to regulate the main radiation direction of the circularly polarized wave.

[0009] In a third aspect, the present application provides a circularly polarized wave control device, which is applied to an electronic device, wherein the electronic device includes an antenna assembly, the antenna assembly includes a radiator and a signal source, the radiator includes a first radiating segment and a second radiating segment connected in a bent manner, the radiator also includes a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point is the connection between the first radiating segment and the second radiating segment, the first free end is the end of the first radiating segment away from the connection point, and the second free end is the end of the second radiating segment away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; the signal source is electrically connected to the feeding point , the signal source is used to excite the radiator to form a first resonance mode supporting a first frequency band and a second resonance mode supporting a second frequency band, the first resonance mode forms a first resonance current between the first free end and the first grounding point and returns to the ground through the first grounding point, and the first resonance mode forms a second resonance current between the second free end and the first grounding point and returns to the ground through the first grounding point; the second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, the resonance current of the second resonance mode includes a third resonance current located between the first free end and the connection point and a fourth resonance current located between the connection point and the second free end, and the third resonance current and the fourth resonance current are used to form a circularly polarized wave; the device includes:

[0010] The control module is used to control the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment, so as to control the main radiation direction of the circularly polarized wave.

[0011] In a fourth aspect, the present application provides an electronic device, comprising a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method for controlling circularly polarized waves.

[0012] The circularly polarized wave control method, device and electronic device provided in the embodiments of the present application include a first radiation segment and a second radiation segment connected in a bent manner through a radiator, the radiator also includes a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point is the connection between the first radiation segment and the second radiation segment, the first free end is an end of the first radiation segment away from the connection point, and the second free end is an end of the second radiation segment away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; a signal source is electrically connected to the feeding point, and the signal source is used to excite the radiator to form a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band, and the first resonant mode is in the first A first resonant current formed between the free end and the first grounding point returns to the ground via the first grounding point, and a second resonant current formed between the second free end and the first grounding point in the first resonant mode returns to the ground via the first grounding point; the second resonant mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, and the resonant current of the second resonant mode includes a third resonant current located between the first free end and the connection point and a fourth resonant current located between the connection point and the second free end, and the third resonant current and the fourth resonant current form a circularly polarized wave, and the radiation direction of the circularly polarized wave is related to the length ratio of the first radiation segment and the second radiation segment, wherein the first resonant mode and the second resonant mode can improve the efficiency of the second frequency band, thereby achieving that the electronic device supports circularly polarized waves while also having good circular polarization performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0014] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0015] Figure 2 It is a schematic diagram of a partial decomposition structure of an electronic device provided in an embodiment of the present application;

[0016] Figure 3 is a structural schematic diagram of an antenna assembly provided in a first embodiment of the electronic device provided in the embodiments of the present application;

[0017] Figure 4 is a schematic diagram of current distribution in a first resonant mode on an antenna assembly provided in a first embodiment of the present application;

[0018] Figure 5 is a schematic diagram of current distribution in the second resonant mode on the antenna assembly provided by the first embodiment of the present application;

[0019] Figure 6 yes Figure 3 S-parameter curves of the provided antenna components;

[0020] Figure 7 It is a scene diagram of circularly polarized wave transceiver equipment (such as satellite) communicating with electronic equipment;

[0021] Figure 8 is the circular polarization parameter of the antenna assembly provided in the first embodiment of the present application;

[0022] Fig. 9 A right-hand circularly polarized 3D radiation pattern formed on the display screen side by the antenna assembly provided in the first embodiment of the present application;

[0023] Fig.10 The left-hand circularly polarized 3D radiation pattern formed by the antenna assembly provided in the first embodiment on the back cover side;

[0024] Fig.11 is a structural schematic diagram of an antenna assembly provided in a second embodiment of the present application;

[0025] Fig.12 It is a right-hand circularly polarized 3D radiation pattern formed by the antenna assembly provided by the second embodiment of the present application on the display screen side;

[0026] Fig.13 It is a left-hand circularly polarized 3D radiation pattern formed on the back cover side by the antenna assembly provided by the second embodiment of the present application;

[0027] Fig.14 is a structural schematic diagram of an antenna assembly provided in a third embodiment of the present application;

[0028] Fig.15 is a schematic diagram of the structure of a switch switching circuit provided in an embodiment of the present application;

[0029] Fig.16 It is a 3D directional diagram of the display screen side of the antenna assembly provided by the third embodiment of the present application when the switch unit is switched to be electrically connected to the grounded large inductor;

[0030] Fig.17 It is a 3D directional diagram of the rear cover side of the antenna assembly provided by the third embodiment of the present application when the switch unit is switched to be electrically connected to the grounded large inductor;

[0031] Fig.18 is a structural schematic diagram of an antenna assembly provided in a fourth embodiment of the present application;

[0032] Fig.19 is a schematic diagram of current distribution in the second resonant mode on the antenna assembly provided by the fourth embodiment of the present application;

[0033] Fig. 20 is a schematic diagram of current distribution in the third resonant mode on the antenna assembly provided by the fourth embodiment of the present application;

[0034] Fig.21 is a structural schematic diagram of an antenna assembly provided in a fifth embodiment of the present application;

[0035] Fig. 22 is a schematic diagram of current distribution in the second resonant mode on the antenna assembly provided by the fifth embodiment of the present application;

[0036] Fig.23 is a schematic diagram of current distribution in the fourth resonance mode on the antenna assembly provided by the fifth embodiment of the present application;

[0037] Fig.24 is a structural schematic diagram of an antenna assembly provided in a sixth embodiment of the present application;

[0038] Fig.25 It is a schematic diagram of the first circularly polarized wave control method provided in the embodiment of the present application;

[0039] Fig.26 It is a schematic diagram of a second circularly polarized wave control method provided in an embodiment of the present application;

[0040] Fig. 27 It is a schematic diagram of an implementation of step S100 in the first circularly polarized wave control method provided in an embodiment of the present application;

[0041] Fig.28 It is a schematic diagram of another implementation of step S100 in the first circularly polarized wave control method provided in an embodiment of the present application;

[0042] Fig.29 It is a circular polarization wave control device provided in an embodiment of the present application;

[0043] Fig.30 This is a circuit block diagram of an electronic device provided in an embodiment of the present application.

[0044] Description of Figure Numbers:

[0045] Electronic device 1000; display screen 200; middle frame 300; back cover 400; middle plate 310; frame 320; antenna assembly 100; radiator 10; signal source 30; first radiation section 11; second radiation section 12; first free end A; connection point B; first grounding point C; feeding point D; second free end E; reference floor 500; switch switching circuit 40; control circuit 50; first current area H1; second current area H2; third current area H3; switch unit K; ground short-circuit branch N1; impedance branch N2; first parasitic radiator 60; third free end F; second grounding point G; second parasitic radiator 70; fourth free end H; third grounding point I; control device 600; control module 610; memory 700; processor 800. DETAILED DESCRIPTION

[0046] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the embodiments described in the present application are only a part of the embodiments, not all of the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present application.

[0047] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It can be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0048] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example: a component or device including one or more parts is not limited to the one or more parts listed, but optionally includes one or more parts that are not listed but inherent to the exemplified product, or one or more parts that it should have based on the described function.

[0049] See also Figure 1 , Figure 1 The following is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application. The electronic device 1000 includes but is not limited to a mobile phone, a tablet computer, a laptop computer, a computer, a wearable device, a drone, a robot, a digital camera, and other devices with communication functions. The present embodiment of the present application is described using a mobile phone as an example, and other electronic devices may refer to this embodiment.

[0050] See also Figure 2 , the electronic device 1000 includes an antenna assembly 100. Taking the electronic device 1000 as a mobile phone as an example, the working environment of the antenna assembly 100 is illustrated. The electronic device 1000 includes a display screen 200, a middle frame 300 and a back cover 400 arranged in sequence along the thickness direction. Among them, the middle frame 300 includes a middle plate 310 and a frame 320 surrounding the periphery of the middle plate 310. The display screen 200, the middle plate 310 and the back cover 400 are stacked in sequence, and a receiving space is formed between the display screen 200 and the middle plate 310, and between the middle plate 310 and the back cover 400 to accommodate circuit boards, camera modules, receiver modules, batteries, various sensors and other devices. One side of the frame 320 is surrounded by the edge of the display screen 200, and the other side of the frame 320 is surrounded by the edge of the back cover 400 to form a complete appearance structure of the electronic device 1000. In this embodiment, the frame 320 and the middle plate 310 are an integrated structure, and the frame 320 and the back cover 400 can be a split structure. The above is the working environment of the antenna assembly 100 taking a mobile phone as an example, but the antenna assembly 100 of the present application is not limited to the above working environment.

[0051] See also Figure 3 , the electronic device 1000 at least includes an antenna assembly 100 .

[0052] See also Figure 3 The antenna assembly 100 includes a radiator 10 and a signal source 30 .

[0053] See also Figure 3 , the radiator 10 includes a first radiating section 11 and a second radiating section 12 that are bent and connected. The present application does not specifically describe the angle at which the first radiating section 11 and the second radiating section 12 are bent and connected. For example, the angle of the bending connection may be 70°-110°, or 60°-100°, or 80°-120°, etc. Further, the angle between the first radiating section 11 and the second radiating section 12 is approximately 90°, such as 80°, 85°, 88°, 89°, 90°, 91°, 94°, 100°, etc. The first radiating section 11 and the second radiating section 12 are orthogonal or nearly orthogonal to form an orthogonal signal pair. The concept of the bending connection between the first radiating section 11 and the second radiating section 12 in the present application is derived from the formation of circularly polarized waves, so the angle of the bending connection between the first radiating section 11 and the second radiating section 12 required to form circularly polarized waves is within the protection scope of the present application.

[0054] See also Figure 3The radiator 10 further includes a first free end A, a connection point B, a first grounding point C, a feeding point D and a second free end E. The connection point B is the connection between the first radiating section 11 and the second radiating section 12. The first free end A is an end of the first radiating section 11 away from the connection point B. The second free end E is an end of the second radiating section 12 away from the connection point B.

[0055] The first free end A and the second free end E are ends that are insulated and disconnected from other conductive structures. Of course, when the radiator 10 is a part of the frame 320, the first free end A and the second free end E can be connected by an insulating filling structure (such as Figure 3 The shaded part in the figure is connected to other conductive structures.

[0056] Optionally, the material of the radiator 10 is a conductive material. The shape of the radiator 10 includes but is not limited to a strip, a rod, a sheet, a film, etc. The form of the radiator 10 includes but is not limited to a metal frame 320, a metal frame embedded in the plastic frame 320, a metal radiator 10 located in or on the surface of the frame 320, a flexible printed circuit board antenna formed on a flexible printed circuit board (Flexible Printed Circuit board, FPC), a laser direct structured antenna by laser direct structure (Laser Direct Structuring, LDS), a printed direct structured antenna by printing direct structure (Print Direct Structuring, PDS), a conductive sheet antenna (such as a metal bracket antenna), etc. In this embodiment, the radiator 10 is taken as a part of the metal frame 320 for explanation.

[0057] See also Figure 3 , the signal source 30 is electrically connected to the feeding point D. The signal source 30 is used to excite the radiator 10 to form a first resonance mode supporting the first frequency band and a second resonance mode supporting the second frequency band.

[0058] See also Figure 4 , the first resonant current formed in the first resonant mode between the first free end A and the first grounding point C returns to the ground through the first grounding point C. The second resonant current formed in the first resonant mode between the second free end E and the first grounding point C returns to the ground through the first grounding point C. The directions of the first resonant current and the second resonant current are opposite. The first resonant mode forms a 1 / 4 wavelength mode of the first frequency band between the second free end E and the first grounding point C, and the intensity of the second resonant current is greater than the intensity of the first resonant current. In other words, the resonant current of the first resonant mode between the second free end E and the first grounding point C makes the main contribution to the radiation energy of the first resonant mode.

[0059] The electrical length between the second free end E and the first ground point C determines the resonant frequency of the first frequency band. Specifically, the first resonant mode forms a 1 / 4 wavelength mode corresponding to the first frequency band between the second free end E and the first ground point C. In other words, the electrical length between the second free end E and the first ground point C is close to 1 / 4 wavelength of the first frequency band.

[0060] The electrical length described in this application can satisfy the following formula:

[0061]

[0062] Where L is the physical length, a is the transmission time of the electrical or electromagnetic signal in the medium, and b is the transmission time in a free scene.

[0063] See also Figure 5 , the second resonant mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end A and the second free end E. The resonant current of the second resonant mode includes a third resonant current located between the first free end A and the connection point B and a fourth resonant current located between the connection point B and the second free end E. The phase difference between the third resonant current and the fourth resonant current is at least partially 90°. The current intensity of the fourth resonant current is greater than the current intensity of the third resonant current. In other words, the fourth resonant current makes the main contribution to the radiation energy of the second resonant mode. Specifically, the electrical length between the connection point B and the second free end E is close to 1 / 4 wavelength of the second frequency band.

[0064] The direction of the fourth resonant current is the same as the direction of the second resonant current. The direction of the first resonant current is opposite to the direction of the third resonant current. Since the third resonant current and the fourth resonant current are respectively located on the first radiation section 11 and the second radiation section 12 which are close to or perpendicular to each other, the third resonant current and the fourth resonant current are vertical or close to vertical in space. The amplitudes of the third resonant current and the fourth resonant current are similar, and the phase difference between the third resonant current and the fourth resonant current is at least partially 90°, and the third resonant current and the fourth resonant current form a circularly polarized wave.

[0065] The center frequency of the first frequency band is smaller than the center frequency of the second frequency band, and the difference between the center frequency of the first frequency band and the center frequency of the second frequency band is smaller than 1 GHz. The first frequency band and the second frequency band form a continuous frequency band.

[0066] See also Figure 6 , Figure 6 yes Figure 3The S parameter curve of the antenna assembly provided. The first frequency band and the second frequency band form a continuous frequency band with a return loss less than -4dB, and the continuous frequency band covers at least 2GHz-3GHz. It can also be seen from the total efficiency curve in the figure that the continuous frequency band formed by the first frequency band and the second frequency band has good efficiency.

[0067] In this embodiment, the distance between the feeding point D and the first grounding point C is less than 1 / 16 wavelength of the second frequency band. In other words, the feeding point D and the first grounding point C are spaced at a small distance, that is, the feeding point D is close to the first grounding point C, and the feeding point D and the first grounding point C are both located in the middle of the radiator 10 with free ends at both ends, so that the antenna assembly is a T-type antenna. The first resonant mode can be called the radiation mode of the T-type antenna, and the second resonant mode can be called the balanced mode of the T-type antenna. Among them, the first resonant mode and the second resonant mode form a dual-wave resonance, and the second resonant mode is coupled with the second resonant mode, which can improve the overall in-band efficiency of the first frequency band and the second frequency band.

[0068] The length between the first grounding point C and the connection point B is less than or equal to 1 / 16 wavelength of the second frequency band. In other words, the first grounding point C is close to the connection point B between the first radiation section 11 and the second radiation section 12, with the following considerations: First, for the first resonant mode, since the direction of the first resonant current is opposite to the direction of the second resonant current and the dividing point is the first grounding point C, when the first grounding point C is set on the second radiation section 12, the current direction between the first grounding point C and the connection point B is opposite to the current direction between the first grounding point C and the second free end E, and the opposite currents have a canceling effect on the far-field energy. Therefore, setting the first grounding point C close to the connection point B can effectively reduce the opposite current, thereby reducing the far-field energy cancellation and improving the efficiency of the first resonant mode. Since the first resonant mode and the second resonant mode complement each other, the efficiency improvement of the first resonant mode also promotes the efficiency improvement of the second resonant mode. When the first grounding point C is close to the connection point B, the more effective part of the third resonant current is orthogonal to the more effective part of the fourth resonant current, thereby promoting the third resonant current and the fourth resonant current to form a better circularly polarized wave and improving the circularly polarized wave performance.

[0069] In this embodiment, the radiation direction of the circularly polarized wave is related to the length ratio of the first radiation segment and the second radiation segment. When the length ratio of the first radiation segment 11 and the second radiation segment 12 is different, the current intensity of the transverse mode formed by the antenna assembly 100 on the reference floor is also different, thereby adjusting the radiation direction of the circularly polarized wave. For example, as the length of the laterally extending radiation segment increases, the current intensity of the transverse mode formed by the antenna assembly 100 on the reference floor increases, which is conducive to the radiation direction of the circularly polarized wave shifting toward the side where the top edge of the electronic device 1000 is located, thereby adjusting the radiation direction of the circularly polarized wave.

[0070] The electronic device 1000 provided in the embodiment of the present application comprises a first radiating section 11 and a second radiating section 12 connected in a bent manner through a radiator 10, the radiator 10 further comprising a first free end A, a connection point B, a first grounding point C, a feeding point D and a second free end E, the connection point B being the connection between the first radiating section 11 and the second radiating section 12, the first free end A being an end of the first radiating section 11 away from the connection point B, the second free end E being an end of the second radiating section 12 away from the connection point B; the length between the first grounding point C and the connection point B is less than or equal to 1 / 16 of the wavelength of the second frequency band, the distance between the feeding point D and the first grounding point C is less than 1 / 16 of the wavelength of the second frequency band; the signal source 30 is electrically connected to the feeding point D, the signal source 30 is used to excite the radiator 10 to form a first resonant mode supporting the first frequency band and a second resonant mode supporting the second frequency band, the first resonant mode The first resonant current formed between the first free end A and the first grounding point C returns to the ground through the first grounding point C, and the first resonant mode forms a second resonant current between the second free end E and the first grounding point C and returns to the ground through the first grounding point C; the second resonant mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end A and the second free end E, and the resonant current of the second resonant mode includes a third resonant current located between the first free end A and the connection point B and a fourth resonant current located between the connection point B and the second free end E, and the third resonant current and the fourth resonant current form a circularly polarized wave, wherein the first resonant mode and the second resonant mode can improve the efficiency of the second frequency band, thereby realizing that the electronic device 1000 supports circularly polarized waves while also having good circular polarization performance; the radiation direction of the circularly polarized wave is related to the length ratio of the first radiation segment and the second radiation segment. When the length ratios of the first radiation segment 11 and the second radiation segment 12 are different, the current intensity of the transverse mode formed by the antenna assembly 100 on the reference floor is also different, thereby adjusting the radiation direction of the circularly polarized wave.

[0071] Optional, see Figure 3, the antenna assembly 100 also includes a matching circuit M. The matching circuit M is electrically connected between the signal source 30 and the feeding point DA. The matching circuit M includes at least one of a capacitor and an inductor. Specifically, the matching circuit M includes but is not limited to a capacitor, or an inductor, or a series device of a capacitor and an inductor, or a parallel device of a capacitor and an inductor, or the above-mentioned series device in parallel with a capacitor, or the above-mentioned series device in parallel with an inductor, or two of the above-mentioned series devices in parallel, or two of the above-mentioned parallel devices in series, and so on. The matching circuit M is beneficial to tuning the resonant frequency of the first resonant mode and the second resonant mode by adjusting the impedance matching between the port of the signal source 30 and the port of the radiator 10.

[0072] The present application does not specifically limit the first frequency band and the second frequency band. Optionally, the first frequency band and the second frequency band include but are not limited to 300MHz-3GHz, 3GHz-30GHz, etc. The present application takes the center frequency of the first frequency band as 2.0GHz and the center frequency of the second frequency band as 2.58GHz as an example for illustration.

[0073] See also Figure 3 The frame 320 includes a top edge 321, a first side edge 323, a bottom edge 322, and a second side edge 324 connected in sequence. The top edge 321 is the side away from the ground when the user holds the electronic device 1000, and the bottom edge 322 is the side facing the ground when the user holds the electronic device 1000. The first side edge 323 is the left side of the back view, and the second side edge 324 is the right side of the back view.

[0074] See also Figure 3 , the first radiation section 11 is arranged on the first side edge 323, that is, the first radiation section 11 is arranged along the first side edge 323. The second radiation section 12 is arranged on the top edge 321, that is, the second radiation section 12 is arranged along the top edge 321. The first radiation section 11 and the second radiation section 12 that are bent and connected are arranged at the upper left corner of the back view of the electronic device 1000. Furthermore, the first radiation section 11 may be a part of the first side edge 323, and the second radiation section 12 may be a part of the top edge 321, that is, the entire bent and connected radiator 10 is the corner of the frame 320. The present application does not require an additional radiator 10, and utilizes the structural design of the corner on the frame 320 of the electronic device 1000 to form a bent and connected radiator 10 to stimulate the generation of circularly polarized waves.

[0075] The circularly polarized wave formed by the third resonant current and the fourth resonant current includes a right-hand circularly polarized wave formed on the display screen side of the electronic device 1000. A left-hand circularly polarized wave that is mirror-symmetrical to the right-hand circularly polarized wave is formed on the back cover 400 side of the electronic device 1000.

[0076] See also Figure 7 , Figure 7 This is a scene diagram of a circularly polarized wave transceiver device (such as a satellite) communicating with an electronic device 1000. Figure 7 It can be seen that in the usage scenario, the display screen side of the electronic device 1000 is directly connected to the satellite signal transmitted by the circularly polarized wave transceiver device 2000, and the back cover 400 side of the electronic device 1000 receives the satellite signal reflected by other objects, thereby achieving high-efficiency communication between the circularly polarized wave transceiver device 2000 and the electronic device 1000, and also ensuring that the electronic device 1000 and the circularly polarized wave transceiver device 2000 maintain good communication.

[0077] Optionally, the satellite signal transmitted by the circularly polarized wave transceiver 2000 is a right-hand circularly polarized wave. The antenna assembly 100 provided in the present application is arranged at the upper right corner of the back of the electronic device 1000, and the third resonant current and the fourth resonant current in the second resonant mode formed by the antenna assembly 100 form a right-hand circularly polarized wave on the side where the display screen of the electronic device 1000 is located, so that when the user is in a common holding posture (holding the electronic device 1000 and looking at the display screen of the electronic device 1000), the antenna assembly 100 is directly connected to the right-hand circularly polarized wave transmitted by the satellite signal through the right-hand circularly polarized wave on the display screen side, and at the side of the electronic device 1000. A left-handed circularly polarized wave is formed on the side where the back cover 400 is located, so that when the user is in a common holding posture (holding the electronic device 1000 and looking at the display screen of the electronic device 1000), the antenna assembly 100 receives the left-handed circularly polarized wave reflected by other objects (mountains, ground, etc.) through the left-handed circularly polarized wave on the side of the back cover 400, thereby improving the reception rate of the antenna assembly 100 for the satellite signal transmitted by the circularly polarized wave transceiver 2000, and improving the communication efficiency between the electronic device 1000 and the circularly polarized wave transceiver 2000 (such as a satellite).

[0078] See also Figure 3 , the electronic device 1000 includes a reference floor 500. The reference floor 500 is made of a conductive material and can be disposed in the middle plate 310 of the electronic device 1000. Optionally, the reference floor 500 includes a metal alloy in the middle plate 310, a reference ground metal in a circuit board, etc. The reference floor 500 is disposed in a space surrounded by the frame 320, and the first grounding point C is electrically connected to the reference floor 500. Taking the electronic device 1000 as a mobile phone as an example, the reference floor 500 can be equivalent to a rectangular plate disposed in the frame 320.

[0079] In this embodiment, the first grounding point C and the feeding point D are both located in the second radiation section 12 to increase the transverse (extending direction of the top edge 321) current in the floor current formed by the second resonant mode on the reference floor 500. When the antenna assembly 100 excites more transverse currents on the reference floor 500, the angle between the main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current and the preset direction decreases. In other words, the main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current is less than the preset angle, which is the angle formed between the radiation direction of the circularly polarized wave and the preset direction when the D feeding point and the first grounding point C are located on the first radiation section 11 while keeping other conditions unchanged. The preset direction is the direction from the bottom edge 322 to the top edge 321. That is, the directional pattern of the antenna assembly 100 approaches the direction of the top edge 321 to achieve upward regulation of the directional pattern.

[0080] When the user's common posture is holding the electronic device 1000 and watching the content on the display screen 200, there is a certain angle between the surface where the display screen 200 of the electronic device 1000 is located and the horizontal plane, and the main radiation direction of the right-hand circularly polarized wave on the display screen 200 side has a certain angle with the surface where the display screen 200 of the electronic device 1000 is located, and the angle of the main radiation direction of the right-hand circularly polarized wave on the display screen 200 side relative to the horizontal plane is the superposition of the above two angles. However, the angle between the surface where the display screen 200 of the electronic device 1000 is located and the horizontal plane is uncertain, resulting in an uncertain angle of the main radiation direction of the right-hand circularly polarized wave on the display screen 200 side relative to the horizontal plane. During use, it is hoped that the main radiation direction of the right-handed circularly polarized wave on the display screen 200 side is as directly connected to the circularly polarized wave transceiver 2000 above as possible. Therefore, how to design the antenna assembly 100 so that the right-handed circularly polarized wave on the display screen 200 side of the electronic device 1000 is directly connected to the circularly polarized wave transceiver 2000 above, reduce reflections and reduce obstructions, and improve satellite signal transmission efficiency, has become a technical problem that needs to be solved.

[0081] The antenna assembly 100 provided in this embodiment adjusts the transverse (extending direction of the top edge 321) current in the floor current formed by the second resonant mode on the reference floor 500 by adjusting the length of the second radiating section 12, thereby adjusting the main radiation direction of the circularly polarized wave. Furthermore, since the third resonant current and the fourth resonant current in the second resonant mode form a circularly polarized wave, in order to keep the frequency band of the circularly polarized wave unchanged, that is, to keep the frequency band supported by the second resonant mode unchanged, the total length of the first radiating section 11 and the second radiating section 12 can be kept unchanged, and then the electrical length from the first free end A to the second free end E remains unchanged, and the center frequency of the second frequency band remains unchanged. Based on this, adjusting the length of the second radiating section 12, in other words, is to adjust the ratio of the length of the first radiating section 11 to the length of the second radiating section 12.

[0082] In this embodiment, the ratio of the length of the first radiation section 11 to the length of the second radiation section 12 is 1:3-3:1. When the ratio of the length of the first radiation section 11 to the length of the second radiation section 12 is less than 1:3, the length of the first radiation section 11 is too small, and the length of the first radiation section 11 is insufficient to support the third resonant current to have a large phase span on the first radiation section 11. For example, when the ratio of the length of the first radiation section 11 to the length of the second radiation section 12 is less than 1:3, the phase span is only 0-30°, and it is difficult for the third resonant current on the first radiation section 11 and the fourth resonant current on the second radiation section 12 to form a good circularly polarized wave. Correspondingly, when the ratio of the length of the first radiation section 11 to the length of the second radiation section 12 is greater than 3:1, the length of the second radiation section 12 is too small, and the length of the second radiation section 12 is insufficient to support the fourth resonant current to have a large phase span on the second radiation section 12, and it is difficult for the third resonant current on the first radiation section 11 and the fourth resonant current on the second radiation section 12 to form a good circularly polarized wave. In this embodiment, by setting the ratio of the length of the first radiation segment 11 to the length of the second radiation segment 12 to 1:3-3:1, the third current signal on the first radiation segment 11 has a larger phase span and the fourth current signal on the second radiation segment 12 has a larger phase span, thereby creating conditions for the third resonant current and the fourth resonant current to form a circularly polarized wave.

[0083] Optionally, the ratio of the length of the first radiation section 11 to the length of the second radiation section 12 is 1:3-3:1. The lengths of the first radiation section 11 and the second radiation section 12 are designed within this range, so that the angle between the main radiation direction of the circularly polarized wave and the preset direction can be 30°-90°. And the circularly polarized wave has a certain coverage angle in the direction from the top edge 321 to the bottom edge 322. For example, when the angle between the main radiation direction of the circularly polarized wave and the preset direction is 60°, the circularly polarized wave covers an angle range greater than or equal to 45° in the direction from the top edge 321 to the bottom edge 322 (not limited to this data, and can also be 50°, 60°, 90°, etc.), so that the circularly polarized wave can simultaneously cover an angle of at least 60°-105° with the preset direction.

[0084] When the angle between the main radiation direction of the circularly polarized wave and the preset direction is 90°, even if the angle between the display screen 200 of the electronic device 1000 and the horizontal plane is 0 degrees, the right-handed circularly polarized wave on the display screen 200 side of the electronic device 1000 can be directly connected to the circularly polarized wave of the satellite above. When the angle between the main radiation direction of the circularly polarized wave and the preset direction is 30°, even if the angle between the display screen 200 of the electronic device 1000 and the horizontal plane is 60 degrees, the right-handed circularly polarized wave on the display screen 200 side of the electronic device 1000 can be directly connected to the circularly polarized wave of the satellite above.

[0085] The first embodiment provided in the present application is described below with reference to the accompanying drawings.

[0086] In the first embodiment, see Figure 4 The antenna assembly 100 is a T-shaped antenna, the feeding point D and the first grounding point C are both in the second radiation section 12, and the distance between the feeding point D and the first grounding point C is relatively close. The ratio of the length of the first radiation section 11 to the length of the second radiation section 12 is 1:1. The distance between the first grounding point C and the connection point B is relatively close to form a circularly polarized wave with good circular polarization characteristics.

[0087] See also Figure 4 and Figure 5 The working modes of the antenna assembly 100 include a first resonant mode and a second resonant mode. The first resonant mode is a quarter-wavelength mode (T antenna radiation mode) in which the first free end A and the second free end E return to the ground through the first grounding point C respectively, and the second resonant mode is a half-wavelength mode (T antenna balanced mode) in which the first free end A passes through the first grounding point C to the second free end E.

[0088] See also Figure 5 , Figure 5J1 represents the third resonant current, and J2 represents the fourth resonant current. J1 and J2 satisfy spatial vertical orthogonality, and because the second resonant mode is a half-wavelength mode, the phases of J1 and J2 also differ by 90 degrees, so the corner structure of the frame 320 is used as a carrier to form orthogonal J1 and J2 to stimulate the generation of circularly polarized waves.

[0089] See also Figure 6 , Figure 6 It is the S parameter curve and efficiency curve of the antenna assembly 100 provided in the first embodiment of the present application. Curve a is the S parameter curve, curve b is the radiation efficiency curve, and curve c is the total efficiency curve. It can be seen from the S parameter curve that the resonant frequency of the first resonant mode is about 2 GHz, and the resonant frequency of the second resonant mode is 2.5 GHz. The first resonant mode and the second resonant mode of the antenna assembly 100 form a dual-wave resonance, and the first frequency band supported by the first resonant mode and the second frequency band supported by the second resonant mode form a continuous frequency band when the return loss is less than -4 dB. In this continuous frequency band, the efficiency is greater than -3 dB, indicating that the radiation mode and the balanced mode of the T-type antenna improve the in-band efficiency. The efficiency of the T-type antenna is relatively high, and it has a very high efficiency itself.

[0090] See also Figure 8 , Figure 8 It is the circular polarization parameter of the antenna assembly 100 provided in the first embodiment of the present application. Curve a is the axial ratio curve, curve b is the left-hand circular polarization gain, and curve c is the right-hand circular polarization gain. It can be seen that at the resonant frequency of the second resonant mode of 2.5GHz, the axial ratio is 2.9 (less than 3), indicating that a good circularly polarized wave is generated near the resonant frequency of the second resonant mode, and the difference between the left and right circular polarization gains reaches 10dB, among which the right-hand circular polarization gain is greater than the left-hand circular polarization gain, indicating that the circularly polarized wave formed by the antenna assembly 100 on the side of the display screen 200 is a right-hand circularly polarized wave.

[0091] See also Fig. 9 and Fig.10 , Fig. 9 and Fig.10 It is the 3D radiation pattern of the antenna assembly 100 provided in the first embodiment of the present application. Fig. 9 The 3D radiation pattern of right-hand circular polarization formed by the antenna assembly 100 provided in the first embodiment of the present application on the side of the display screen 200. Fig. 9 It can be seen that the main radiation direction of the right-hand circular polarization wave is obliquely upward, where the main radiation direction of the right-hand circular polarization is theta = 60°, phi = 90°. That is, the angle between the main radiation direction of the right-hand circular polarization wave and the preset direction is 60°. In addition, in the preset direction, the main radiation direction (main lobe) of the right-hand circular polarization wave and other radiation directions (side lobes) have a certain coverage range, for example, Fig. 9 The coverage range includes theta of 60°-120°. When the electronic device 1000 is held in the hand, the right-hand circularly polarized wave is mainly radiated from the display screen 200 to the upper side, which is convenient for signal connection with the satellite.

[0092] Fig.10 The 3D radiation pattern of left-hand circular polarization formed by the antenna assembly 100 provided in the first embodiment of the present application on the side of the back cover 400. It can be clearly seen that the main radiation directions of the left-hand circular polarization wave and the main radiation directions of the right-hand circular polarization wave are symmetrical relative to the surface where the display screen 200 is located.

[0093] In the second embodiment, the antenna assembly 100 provided in this embodiment has the same structure as the antenna assembly 100 in the first embodiment, and the main difference is that, see Fig.11 , the ratio of the length of the first radiation section 11 to the length of the second radiation section 12 in this embodiment is less than 1:1. In other words, the length of the second radiation section 12 is greater than the length of the first radiation section 11, and the total length of the radiator 10 remains unchanged. The angle between the main radiation direction of the circularly polarized wave generated by the antenna assembly 100 provided in this embodiment and the preset direction is reduced, that is, the main radiation direction of the directional diagram of the antenna assembly 100 is offset toward the side where the top edge 321 is located.

[0094] Take the example of increasing the length of the second radiation section 12 by 2.5 mm (for example, 1 / 6 of the total length of the second radiation section 12) and reducing the length of the first radiation section 11 by 2.5 mm. Here, 2.5 mm is only for illustration, and other suitable sizes may also be used, for example, 1 mm, 2 mm, 5 mm, etc. In this embodiment, the length of the radiator 10 remains unchanged, so the resonant frequency of the second resonant mode remains basically unchanged. At this time, due to the increase in the length of the second radiation section 12, the floor current distribution of the second resonant mode on the reference floor 500 is more of a transverse mode. At this time, the directional pattern is close to the directional pattern distribution of the transverse IFA antenna, realizing the upward regulation of the directional pattern.

[0095] See also Fig.12 and Fig.13 , Fig.12 and Fig.13 This is the 3D radiation pattern of the antenna assembly 100 provided in the second embodiment of the present application. Fig.12 This is a right-hand circularly polarized 3D radiation pattern formed by the antenna assembly 100 provided in the second embodiment of the present application on the display screen 200 side. Fig.12It can be seen that the main radiation direction of the right-hand circularly polarized wave is oriented obliquely upward. Compared with the first embodiment, the angle between the main radiation direction of the right-hand circularly polarized wave and the preset direction is smaller, that is, the angle between the main radiation direction of the circularly polarized wave and the preset direction is less than 55°. This data is for example, and it can also be 50°, 45°, etc. The range covered by the circularly polarized wave in the preset direction is greater than or equal to 90°, but is not limited to this data, and can also be 120°, 150°, 180°. It is explained that this embodiment achieves the regulation of the main radiation direction of the directional diagram of the antenna assembly 100 toward the side where the top edge 321 is located by increasing the length of the second radiation segment 12. This regulation is more conducive to the direction of right-hand circular polarization because more energy on the antenna assembly 100 is radiated upward. When the main radiation direction of the directional diagram of the antenna assembly 100 is regulated to be close to the top edge 321, the right-hand circularly polarized wave on the display screen 200 side of the electronic device 1000 is less blocked, and it is easier to communicate with the circularly polarized wave transceiver 2000 above (such as a satellite) and directly connect.

[0096] In addition, in the preset direction, the main radiation direction (main lobe) of the right-hand circularly polarized wave and other radiation directions (side lobes) form a certain radiation range, for example, Fig. 9 The coverage range includes theta of 60°-120°. When the electronic device 1000 is held in the hand, the main radiation of the right-hand circularly polarized wave is directed from the display screen 200 to the upper side, which is convenient for signal connection with the satellite.

[0097] Fig.13 This is a left-hand circularly polarized 3D radiation pattern formed by the antenna assembly 100 provided in the second embodiment of the present application on the side of the back cover 400. It can be clearly seen that the main radiation directions of the left-hand circularly polarized wave and the main radiation directions of the right-hand circularly polarized wave are symmetrical relative to the surface where the display screen 200 is located.

[0098] In other embodiments, by reducing the length of the second radiation segment 12 , the lateral current of the antenna assembly 100 on the reference floor 500 is reduced, so that the circularly polarized wave formed by the antenna assembly 100 is offset in a direction away from the top edge 321 and closer to the bottom edge 322 .

[0099] In the third embodiment, the antenna assembly 100 provided in the present application is substantially the same as the antenna assembly 100 provided in the second embodiment, the main difference being that the main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current is related to the ratio of the current intensities on the first radiation segment 11 and the second radiation segment 12.

[0100] When the current intensity ratios of the first radiation section 11 and the second radiation section 12 are different, the current intensity of the transverse mode formed by the antenna assembly 100 on the reference floor 500 is also different, thereby adjusting the radiation direction of the circularly polarized wave. For example, when the current intensity of the transversely extending radiation section increases, the current intensity of the transverse mode formed by the antenna assembly 100 on the reference floor 500 increases, which is conducive to the radiation direction of the circularly polarized wave shifting toward the side where the top edge of the electronic device 1000 is located, thereby adjusting the radiation direction of the circularly polarized wave.

[0101] See also Fig.14 The antenna assembly 100 further includes a switch circuit 40. One end of the switch circuit 40 is connected to the first grounding point C, and the other end of the switch circuit 40 is grounded. The switch circuit 40 is used to adjust the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12, so as to adjust the angle between the main radiation direction of the circularly polarized wave and the preset direction.

[0102] The antenna assembly 100 also includes a control circuit electrically connected to the switch switching circuit 40, and the control circuit 50 is used to control the switch switching circuit 40 to adjust the angle between the main radiation direction of the circularly polarized wave and the preset direction according to the receiving intensity of the circularly polarized wave being less than the preset intensity.

[0103] Since the environment where the electronic device 1000 is located is complex, there may be obstacles or the circularly polarized wave transceiver device 2000 (such as a satellite) above is moving, resulting in an uncertain direction of the signal source of the circularly polarized wave transceiver device 2000. In this embodiment of the present application, the control circuit 50 is configured to control the switch switching circuit 40 to adjust the ratio of the current intensity on the first radiation segment 11 to the current intensity on the second radiation segment 12 according to the reception intensity of the circularly polarized wave being less than the preset intensity, so as to adjust the angle between the main radiation direction of the circularly polarized wave and the preset direction, so as to achieve adjustable main radiation direction of the directional diagram of the antenna assembly 100, so as to cope with the problem of uncertain direction of the signal source of the circularly polarized wave transceiver device 2000.

[0104] Generally, when the main radiation direction of the directional diagram of the antenna assembly 100 is toward the top edge 321, the antenna assembly 100 has good signal strength when communicating with the circularly polarized wave transceiver 2000 (satellite) through the right-hand circularly polarized wave. When some right-hand circularly polarized waves are blocked or cannot be directly connected to the satellite communication (the direct connection direction is blocked), the signal strength between the right-hand circularly polarized wave and the circularly polarized wave transceiver 2000 (satellite) is less than the preset strength. In order to further ensure the signal stability of the electronic device 1000 and the satellite communication, this embodiment is set by setting the control circuit 50 to control the switch switching circuit 40 to adjust the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12 according to the receiving strength of the circularly polarized wave being less than the preset strength, so as to adjust the angle between the main radiation direction of the circularly polarized wave and the preset direction, until the receiving strength of the circularly polarized wave is less than the preset strength. If the main radiation direction of the circularly polarized wave is biased towards the bottom edge 322 at this time, the antenna assembly 100 can also communicate with the circularly polarized wave transceiver 2000 through the left-handed circularly polarized wave on the side of the back cover 400, so that the antenna assembly 100 can switch the receiving direction of the circularly polarized wave according to the source direction of different circularly polarized waves, and ensure the stability of satellite communication in the scenario where direct connection is not possible through intelligent switching, and make full use of the right-handed circularly polarized wave and left-handed circularly polarized wave formed by the antenna assembly 100.

[0105] In this embodiment, please refer to Fig.14 , the resonant current distribution of the second resonant mode includes a first current zone H1, a second current zone H2 and a third current zone H3 which are arranged in sequence. The second current zone H2 has a current strong point, wherein the second current zone H2 is a current strong zone. The current intensity of the first current zone H1 is less than the current intensity of the second current zone H2. The current intensity of the third current zone H3 is less than the current intensity of the second current zone H2. The first grounding point C is located in the first current zone H1 or the third current zone H3. That is, the first grounding point C is located outside the current strong zone on the radiator 10. Generally, the current strong zone is equivalent to the electric wall position, and a switching circuit is set at the electric wall position. The switching circuit has a weak effect on adjusting the input impedance on the radiator 10, which is not conducive to effectively adjusting the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12.

[0106] Based on this, the present application sets the first grounding point C outside the electric wall area of ​​the second resonance mode of the radiator 10, that is, the first current zone H1 and the second current zone H2. In this embodiment, the current of the second resonance mode is the current of the 1 / 2 wavelength mode, and the current of the second resonance mode gradually increases from the first free end A to the center position of the radiator 10, and then gradually decreases from the center position of the radiator 10 to the center position of the second free end E. Therefore, the vicinity of the center position of the radiator 10 is the current strong point of the second resonance mode. The center position of the radiator 10 is located in the second current zone H2. The first grounding point C deviates from the center position of the radiator 10. In other words, the distance between the first free end A and the first grounding point C is not equal to the distance between the first grounding point C and the second free end E.

[0107] In order to ensure that the right-hand circularly polarized wave of the antenna assembly 100 has a better radiation direction (the main radiation direction is closer to the side where the top edge 321 is located) when the switch switching circuit 40 is not connected to the first grounding point C, in this embodiment, the size of the second radiation section 12 is larger than the size of the first radiation section 11. The length between the first grounding point C and the first free end A is smaller than the length between the first grounding point C and the second free end E.

[0108] The switch switching circuit 40 has a ground short circuit state and at least one impedance state for the second frequency band. The at least one impedance state includes a state with different impedance values. The switch switching circuit 40 is used to adjust the input impedance of the first ground point C by switching different impedance states, so as to adjust the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12, thereby adjusting the main radiation direction of the antenna assembly 100.

[0109] Optional, see Fig.15 The switch switching circuit 40 includes a switch unit K, a ground short-circuit branch N1 and at least one impedance branch N2, one end of the switch unit K is electrically connected to the first ground point C, and the other end of the switch unit K can be selectively connected to at least one of the ground short-circuit branch N1 and the at least one impedance branch N2, and the at least one impedance branch N2 includes at least one ground inductive branch and / or at least one ground capacitive branch in an impedance state to the second frequency band. Optionally, the ground inductive branch is a ground inductor. Optionally, the ground capacitive branch is a ground capacitor.

[0110] For example, at least one impedance branch N2 includes four branches, namely a grounded first inductor, a grounded second inductor, a grounded first capacitor, and a grounded second capacitor, wherein the first inductor and the second inductor have different sizes, and the first capacitor and the second capacitor have different sizes.

[0111] When the switch unit K switches to the ground short-circuit branch N1 electrically connected to the first grounding point C, that is, when the switch switching circuit 40 is in the ground short-circuit state, the switch switching circuit 40 is in a ground short-circuit state for the second frequency band, and the first grounding point C has a first impedance value. At this time, the ratio of the current intensity on the first radiation segment 11 to the current intensity on the second radiation segment 12 is a first ratio.

[0112] The at least one impedance branch N2 includes a grounded inductive branch (e.g., a large inductor of 20-30 nH). When the switch unit K switches to the grounded inductive branch electrically connected to the first grounding point C, and the switch switching circuit 40 switches to the impedance state, the first grounding point C has a second impedance value, and at this time, the ratio of the current intensity on the first radiation segment 11 to the current intensity on the second radiation segment 12 is a second ratio. The second ratio is greater than the first ratio.

[0113] See also Fig.16 and Fig.17 , Fig.16 It is a 3D directional diagram of the display screen 200 side when the switch unit K of the antenna assembly 100 provided in the third embodiment of the present application is switched to be electrically connected to the grounded large inductor. Fig.17 It is the 3D directional diagram of the antenna assembly 100 provided in the third embodiment of the present application on the side of the back cover 400 when the switch unit K is switched to be electrically connected to the grounded large inductor. In this embodiment, the angle between the main radiation direction of the circularly polarized wave and the preset direction is the second angle, and the second angle is greater than 100°, and the antenna assembly 100 can communicate with the circularly polarized wave transceiver 2000 (such as a satellite) through the left-handed circularly polarized wave. In the second embodiment, the angle between the main radiation direction of the circularly polarized wave and the preset direction is the first angle, and the first angle is less than 55°, and the antenna assembly 100 can communicate with the circularly polarized wave transceiver 2000 (such as a satellite) through the right-handed circularly polarized wave.

[0114] In other words, compared to when the switch unit K switches to the ground short-circuit branch N1, when the switch unit K switches to the connection of the ground inductive branch, the current intensity of the second radiation segment 12 decreases, and the ratio of the current intensity of the first radiation segment 11 to the current intensity of the second radiation segment 12 increases, and the main radiation direction of the antenna assembly 100 points to the side where the bottom edge 322 is located.

[0115] Optionally, the control circuit 50 is electrically connected to the switch unit K. The initial state of the switch unit K is to electrically connect the ground short-circuit branch N1 and the first grounding point C. Since the first grounding point C corresponds to the first main radiation direction when it is electrically connected to the ground short-circuit branch N1, the first main radiation direction is biased toward the side where the top edge 321 is located, and the right-handed circularly polarized wave works. When the direction in which the circularly polarized wave transceiver 2000 (for example, a satellite) transmits a circularly polarized wave differs greatly from the first main radiation direction of the antenna assembly 100, the receiving end of the antenna assembly 100 detects that the receiving intensity of the circularly polarized wave is less than a preset intensity, and transmits a trigger signal that the receiving intensity of the circularly polarized wave is less than a preset intensity to the control circuit 50. The control circuit 50 controls the switch unit K to disconnect the ground short-circuit branch N1 and the first grounding point C, and sequentially connects other impedance branches N2 and the first grounding point C, determines the target impedance branch N2 whose signal strength is greater than the preset intensity, and connects the target impedance branch N2 to the first grounding point C. The target impedance branch N2 is electrically connected to the first grounding point C. The target impedance branch N2 changes the impedance value of the first grounding point C, and changes the intensity of the third resonant current on the first radiation segment 11 and the intensity of the fourth resonant current on the second radiation segment 12, so that the main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current is the second main radiation direction. The second main radiation direction corresponds to the direction in which the circularly polarized wave is transmitted by the circularly polarized wave transceiver 2000 (for example, a satellite). Therefore, the receiving end of the antenna assembly 100 detects that the receiving intensity of the circularly polarized wave is greater than the preset intensity.

[0116] The following is an example of the antenna assembly 100 provided in the third embodiment with reference to the accompanying drawings. When the switch unit K switches to the ground short-circuit branch N1 electrically connected to the first ground point C, it is the antenna assembly 100 provided in the second embodiment; when the switch unit K switches to the inductive branch, a large grounded inductor is connected in series to the first ground point C, and the input impedance of the first ground point C is adjusted. The center frequency of the second resonant mode remains unchanged, and the current ratio of the second resonant mode on the first radiation section 11 and the second radiation section 12 changes slightly. Due to the increase in the current intensity on the second radiation section 12, the ratio of the current intensity of the first radiation section 11 to the current intensity of the second radiation section 12 increases compared to the ratio of the current intensity of the first radiation section 11 to the current intensity of the second radiation section 12 in the second embodiment.

[0117] The antenna assembly 100 provided in this embodiment can be switched to the ground short-circuit branch N1 by setting the switch unit K, so as to realize the direct connection between the right-hand circularly polarized wave on the display screen 200 side of the electronic device 1000 and the satellite communication device; then, in the scenario where the right-hand circularly polarized wave on the display screen 200 side of the electronic device 1000 cannot be directly connected to the satellite communication device, and when adjusting the right-hand circularly polarized directional pattern upward is also ineffective, the switch unit K is switched to the inductive branch to realize the distribution ratio control of J1 and J2, so that the radiation direction of the left-hand circularly polarized wave on the back cover 400 side of the electronic device 1000 is as low as possible, close to the direction of the earth, so as to receive more left-hand circularly polarized waves reflected from the satellite.

[0118] Optional, see Fig.18 The antenna assembly 100 further includes a first parasitic radiator 60. The first parasitic radiator 60 includes a third free end F and a second grounding point G. The third free end F is arranged opposite to the second free end E, and the second grounding point G is grounded. The first parasitic radiator 60 is coupled to the radiator 10.

[0119] The first parasitic radiator 60 and the second free end E to the first ground point C form a mouth-to-mouth antenna.

[0120] See also Fig.19 , the second resonant mode also forms a fifth resonant current in the same direction as the fourth resonant current at the third free end F and the second grounding point G. Due to the addition of the first parasitic radiator 60, the main current of the second resonant mode is distributed between the first grounding point C and the third free end F. The intensity of the fifth resonant current is less than that of the fourth resonant current. The second resonant mode includes a combination of a T-antenna balanced mode and an EE radiation mode.

[0121] Optionally, the radiator 10 and the first parasitic radiator 60 further form a third resonant mode supporting a third frequency band under the excitation of the signal source 30. The center frequency of the third frequency band is greater than the center frequency of the second frequency band. The center frequency of the third frequency band may be greater than, less than, or equal to the center frequency of the first frequency band, wherein the third frequency band may support Wi-Fi 2.4G frequency band, B41 frequency band, N78 frequency band, etc.

[0122] See also Fig. 20, the third resonant mode forms a sixth resonant current between the first grounding point C and the second free end E. The third resonant mode forms a seventh resonant current between the third free end F and the second grounding point G. The current intensity of the seventh resonant current is greater than the current intensity of the sixth resonant current. The direction of the seventh resonant current is opposite to the direction of the sixth resonant current. The third resonant mode is the EE balanced mode of the mouth-to-mouth antenna formed by the first grounding point C to the second free end E-the first parasitic radiator 60.

[0123] When the second radiation segment 12 is larger than the first radiation segment 11, the phase critical point of the third resonant current and the fourth resonant current is located on the second radiation segment 12, the phase span on the first radiation segment 11 is reduced, and the circularly polarized wave efficiency is reduced. By setting the third resonant mode, the existence of the third resonant mode can further improve the in-band efficiency of the first resonant mode and the second resonant mode, thereby further improving the efficiency of the circularly polarized wave; the addition of the third resonant mode enables the antenna assembly 100 to support more frequency bands, and the third resonant mode can also increase the bandwidth of the first resonant mode and the second resonant mode to form a broadband antenna.

[0124] Optional, see Fig.21 The antenna assembly 100 further includes a second parasitic radiator 70. The second parasitic radiator 70 includes a fourth free end H and a third grounding point I. The fourth free end H is arranged opposite to the first free end A, and the third grounding point I is grounded. The second parasitic radiator 70 is coupled to the radiator 10.

[0125] The second parasitic radiator 70 and the first free end A to the first ground point C form a mouth-to-mouth antenna.

[0126] See also Fig. 22 , the main current of the second resonant mode is distributed between the first free end A and the first ground point C, and the radiator 10 between the first free end A and the first ground point C can be coupled with the second parasitic radiator 70, so that the eighth resonant current with the same direction as the third resonant current is formed on the fourth free end H and the third ground point I. At this time, the second resonant mode includes a combined mode of the balanced mode of the T antenna and the radiation mode of the EE (electric field-electric field) mode. Among them, the current intensity of the third resonant current is greater than the current intensity of the eighth resonant current.

[0127] The radiator 10 and the second parasitic radiator 70 also form a fourth resonant mode supporting a fourth frequency band under the excitation of the signal source 30. The center frequency of the fourth frequency band is greater than the center frequency of the second frequency band. The center frequency of the fourth frequency band may be greater than, less than, or equal to the center frequency of the third frequency band, wherein the fourth frequency band may support Wi-Fi 2.4G frequency band, B41 frequency band, N78 frequency band, etc.

[0128] See also Fig.23 , the fourth resonant mode forms a ninth resonant current between the first grounding point C and the first free end A. The fourth resonant mode forms a tenth resonant current between the fourth free end H and the third grounding point I. The current intensity of the tenth resonant current is greater than the current intensity of the ninth resonant current. The direction of the tenth resonant current is opposite to the direction of the ninth resonant current. The fourth resonant mode is the EE balanced mode of the mouth-to-mouth antenna formed by the first grounding point C to the first free end A-the second parasitic radiator 70.

[0129] When the second radiation segment 12 is larger than the first radiation segment 11, the phase critical point of the third resonant current and the fourth resonant current is located on the second radiation segment 12, the phase span on the first radiation segment 11 is reduced, and the circularly polarized wave efficiency is reduced. By setting the fourth resonant mode, the existence of the fourth resonant mode can further improve the in-band efficiency of the first resonant mode and the second resonant mode, thereby further improving the efficiency of the circularly polarized wave; the addition of the fourth resonant mode enables the antenna assembly 100 to support more frequency bands.

[0130] In other embodiments, see Fig.24 , the first parasitic radiator 60 and the second parasitic radiator 70 can exist at the same time. At this time, the third resonant mode and the fourth resonant mode can exist at the same time, further improving the in-band efficiency of the first resonant mode and the second resonant mode, thereby further improving the efficiency of the circularly polarized wave; enabling the antenna assembly 100 to support more frequency bands, for example, forming dual waves supporting the N41 frequency band, dual waves supporting the N78 frequency band, etc. The fourth resonant mode can also increase the bandwidth of the first resonant mode and the second resonant mode to form a broadband antenna.

[0131] The electronic device 1000 provided in the present application can adjust the ratio of the third resonant current J1 and the fourth resonant current J2 by ​​adjusting the length ratio of the transverse radiation section and the longitudinal radiation section, and adding a switch switching circuit 40 at the first grounding point C, so as to realize flexible control of the main radiation pattern of the circularly polarized wave, and then realize intelligent control of the circularly polarized antenna pattern to ensure the connection stability of the circularly polarized wave. In addition, by adding parasitic branches to the main radiator 10, the radiation efficiency is improved, more resonances are added, more frequency bands are covered, and a broadband antenna is realized.

[0132] Please refer to Figure 1-Figure 24The present application also provides a method for controlling circular polarized waves, which is applied to an electronic device 1000 provided in any one of the above embodiments. The electronic device 1000 includes an antenna assembly 100. The antenna assembly 100 includes a radiator 10 and a signal source 30. The radiator 10 includes a first radiating section 11 and a second radiating section 12 connected in a bent manner. The ratio of the length of the first radiating section 11 to the length of the second radiating section 12 is 1:3-3:1. The radiator 10 also includes a first free end A, a connection point B, a first grounding point C, a feeding point D and a second free end E. The connection point B is the connection between the first radiating section 11 and the second radiating section 12. The first free end A is an end of the first radiating section 11 away from the connection point B. The second free end E is an end of the second radiating section 12 away from the connection point B. The length between the first grounding point C and the connection point B is less than or equal to 1 / 16 of the wavelength of the second frequency band. The distance between the feeding point D and the first grounding point C is less than 1 / 16 of the wavelength of the second frequency band. The signal source 30 is electrically connected to the feeding point D, and is used to excite the radiator 10 to form a first resonance mode supporting the first frequency band and a second resonance mode supporting the second frequency band. The first resonance mode forms a first resonance current between the first free end A and the first grounding point C and returns to the ground through the first grounding point C, and the first resonance mode forms a second resonance current between the second free end E and the first grounding point C and returns to the ground through the first grounding point C. The second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end A and the second free end E, and the resonance current of the second resonance mode includes a third resonance current located between the first free end A and the connection point B and a fourth resonance current located between the connection point B and the second free end E. The third resonance current and the fourth resonance current form a circularly polarized wave.

[0133] See also Fig.25 , the method comprising:

[0134] Step S100: regulating the ratio of the third resonant current of the first radiation section 11 to the fourth resonant current of the second radiation section 12 to regulate the main radiation direction of the circularly polarized wave.

[0135] Since the environment where the electronic device 1000 is located is complex, there may be obstacles or the circularly polarized wave transceiver device 2000 (such as a satellite) above is moving, resulting in the uncertain direction of the signal source of the circularly polarized wave transceiver device 2000. The electronic device 1000 provided in the present application adjusts the intensity ratio of the third resonant current of the first radiation segment 11 and the fourth resonant current on the second radiation segment 12 to adjust the main radiation direction of the circularly polarized wave, thereby achieving adjustable directivity of the circularly polarized wave, so as to cope with the problem of uncertain direction of the signal source of the circularly polarized wave transceiver device 2000 and achieve signal stability of the circularly polarized wave.

[0136] In this embodiment, please refer to Fig.14 , the resonant current distribution of the second resonant mode includes a first current zone H1, a second current zone H2 and a third current zone H3 which are arranged in sequence. The second current zone H2 has a current strong point, wherein the second current zone H2 is a current strong zone. The current intensity of the first current zone H1 is less than the current intensity of the second current zone H2. The current intensity of the third current zone H3 is less than the current intensity of the second current zone H2. The first grounding point C is located in the first current zone H1 or the third current zone H3. That is, the first grounding point C is located outside the current strong zone on the radiator 10. Generally, the current strong zone is equivalent to the electric wall position, and a switching circuit is set at the electric wall position. The switching circuit has a weak effect on adjusting the input impedance on the radiator 10, which is not conducive to effectively adjusting the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12.

[0137] Based on this, the present application sets the first grounding point C outside the electric wall area of ​​the second resonance mode of the radiator 10, that is, the first current zone H1 and the second current zone H2. In this embodiment, the current of the second resonance mode is the current of the 1 / 2 wavelength mode, and the current of the second resonance mode gradually increases from the first free end A to the center position of the radiator 10, and then gradually decreases from the center position of the radiator 10 to the center position of the second free end E. Therefore, the vicinity of the center position of the radiator 10 is the current strong point of the second resonance mode. The center position of the radiator 10 is located in the second current zone H2. The first grounding point C deviates from the center position of the radiator 10. In other words, the distance between the first free end A and the first grounding point C is not equal to the distance between the first grounding point C and the second free end E.

[0138] In order to ensure that the right-hand circularly polarized wave of the antenna assembly 100 has a better radiation direction (the main radiation direction is closer to the side where the top edge 321 is located) when the switch switching circuit 40 is not connected to the first grounding point C, in this embodiment, the size of the second radiation section 12 is larger than the size of the first radiation section 11. The length between the first grounding point C and the first free end A is smaller than the length between the first grounding point C and the second free end E.

[0139] Optional, please refer to Fig.14 and Fig.15 , the antenna assembly 100 further includes a switch circuit 40 and a control circuit 50. One end of the switch circuit 40 is connected to the first ground point C, and the other end of the switch circuit 40 is grounded. The switch circuit 40 has a ground short circuit state and at least one impedance state for the second frequency band. The switch circuit 40 is used to adjust the input impedance of the first ground point C by switching different impedance states, so as to adjust the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12, so as to adjust the angle between the main radiation direction of the circularly polarized wave and the preset direction.

[0140] Optional, please refer to Fig.15 The switch switching circuit 40 includes a switch unit K, a ground short-circuit branch N1 and at least one impedance branch N2, one end of the switch unit K is electrically connected to the first ground point C, and the other end of the switch unit K can be selectively connected to at least one of the ground short-circuit branch N1 and the at least one impedance branch N2, and the at least one impedance branch N2 includes at least one ground inductive branch and / or at least one ground capacitive branch in an impedance state to the second frequency band. Optionally, the ground inductive branch is a ground inductor. Optionally, the ground capacitive branch is a ground capacitor.

[0141] Optionally, at least one impedance branch N2 includes four branches, namely a grounded first inductor, a grounded second inductor, a grounded first capacitor, and a grounded second capacitor, wherein the first inductor and the second inductor have different sizes, and the first capacitor and the second capacitor have different sizes.

[0142] When the switch unit K switches to the ground short-circuit branch N1 electrically connected to the first grounding point C, that is, when the switch switching circuit 40 is in the ground short-circuit state, the switch switching circuit 40 is in a ground short-circuit state for the second frequency band, and the first grounding point C has a first impedance value. At this time, the ratio of the current intensity on the first radiation segment 11 to the current intensity on the second radiation segment 12 is a first ratio.

[0143] The at least one impedance branch N2 includes a grounded inductive branch (e.g., a large inductor of 20-30 nH). When the switch unit K switches to the grounded inductive branch to electrically connect the first grounding point C, and the switch switching circuit 40 switches to the impedance state, the first grounding point C has a second impedance value, and at this time, the ratio of the current intensity on the first radiation segment 11 to the current intensity on the second radiation segment 12 is a second ratio.

[0144] Before step S100, please refer to Fig.26 , the method further comprises:

[0145] Step S200: comparing the intensity of the circularly polarized wave received by the antenna assembly 100 with a preset intensity.

[0146] Step S300: When the receiving intensity of the circularly polarized wave is less than a preset intensity, controlling the switch circuit 40 to switch from the ground short circuit state to the impedance state.

[0147] The control circuit 50 is electrically connected to the switch unit K. The initial state of the switch unit K is to electrically connect the ground short-circuit branch N1 and the first grounding point C. Since the first grounding point C corresponds to the first main radiation direction when it is electrically connected to the ground short-circuit branch N1, the first main radiation direction is biased toward the side where the top edge 321 is located, and the right-handed circularly polarized wave works. When the direction in which the circularly polarized wave transceiver 2000 (for example, a satellite) transmits a circularly polarized wave differs greatly from the first main radiation direction of the antenna assembly 100, the receiving end of the antenna assembly 100 detects that the receiving intensity of the circularly polarized wave is less than the preset intensity, and transmits a trigger signal loaded with the receiving intensity of the circularly polarized wave being less than the preset intensity to the control circuit 50. The control circuit 50 controls the switch unit K to disconnect the ground short-circuit branch N1 and the first grounding point C, and sequentially connects the other impedance branches N2 and the first grounding point C, that is, the control circuit 50 controls the switch switching circuit 40 to switch from the ground short-circuit state to the impedance state to determine the signal strength. The target impedance branch N2 is greater than the preset strength, and the target impedance branch N2 is electrically connected to the first grounding point C. The target impedance branch N2 changes the impedance value of the first grounding point C, and changes the strength of the third resonant current on the first radiation segment 11 and the strength of the fourth resonant current on the second radiation segment 12, so that the main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current is the second main radiation direction. The second main radiation direction corresponds to the direction in which the circularly polarized wave transceiver 2000 (for example, a satellite) transmits the circularly polarized wave. Therefore, the receiving end of the antenna assembly 100 detects that the receiving intensity of the circularly polarized wave is greater than the preset intensity.

[0148] Generally, when the main radiation direction of the directional diagram of the antenna assembly 100 is toward the top edge 321, the antenna assembly 100 has good signal strength when communicating with the circularly polarized wave transceiver 2000 (satellite) through the right-hand circularly polarized wave. When some right-hand circularly polarized waves are blocked or cannot be directly connected to the satellite communication (the direct connection direction is blocked), the signal strength between the right-hand circularly polarized wave and the circularly polarized wave transceiver 2000 (satellite) is less than the preset strength. In order to further ensure the signal stability of the electronic device 1000 and the satellite communication, this embodiment is set by setting the control circuit 50 to control the switch switching circuit 40 to adjust the ratio of the current intensity on the first radiation section 11 to the current intensity on the second radiation section 12 according to the receiving strength of the circularly polarized wave being less than the preset strength, so as to adjust the angle between the main radiation direction of the circularly polarized wave and the preset direction, until the receiving strength of the circularly polarized wave is less than the preset strength. If the main radiation direction of the circularly polarized wave is biased towards the bottom edge 322 at this time, the antenna assembly 100 can also communicate with the circularly polarized wave transceiver 2000 through the left-handed circularly polarized wave on the side of the back cover 400, so that the antenna assembly 100 can switch the receiving direction of the circularly polarized wave according to the source direction of different circularly polarized waves, and ensure the stability of satellite communication in the scenario where direct connection is not possible through intelligent switching, and make full use of the right-handed circularly polarized wave and left-handed circularly polarized wave formed by the antenna assembly 100.

[0149] See also Fig. 27 , step S100 includes:

[0150] Step S110: Reduce the ratio of the third resonant current of the first radiation segment 11 to the fourth resonant current of the second radiation segment 12, so that the angle between the main radiation direction of the circularly polarized wave and the preset direction is reduced, and the preset direction is the direction from the bottom edge 322 of the electronic device 1000 to the top edge 321 of the electronic device 1000.

[0151] Specifically, the impedance of the switch circuit 40 is controlled to decrease, so as to reduce the ratio of the third resonant current of the first radiation section 11 to the fourth resonant current of the second radiation section 12 .

[0152] In this embodiment, when the angle between the direction in which the circularly polarized wave transceiver 2000 (such as a satellite) transmits the circularly polarized wave and the preset direction is small, and the angle between the main radiation direction of the antenna assembly 100 and the preset direction is large, the control circuit 50 controls the impedance of the switch switching circuit 40 to switch to a relatively low impedance state, for example, switching from a large grounding inductor to a small grounding inductor, or from a large grounding inductor to a grounding short-circuit branch N1, so as to reduce the ratio of the third resonant current of the first radiation segment 11 to the fourth resonant current on the second radiation segment 12, so that the main radiation direction of the antenna assembly 100 is adjusted toward the side where the top edge 321 is located, so that the main radiation direction of the antenna assembly 100 corresponds to the direction in which the circularly polarized wave transceiver 2000 (such as a satellite) transmits the circularly polarized wave, so as to ensure that the circularly polarized wave has a good signal strength.

[0153] See also Fig.28 , step S120: increase the ratio of the third resonant current of the first radiation segment 11 to the fourth resonant current of the second radiation segment 12, so that the angle between the main radiation direction of the circularly polarized wave and the preset direction increases, and the preset direction is the direction from the bottom edge 322 of the electronic device 1000 to the top edge 321 of the electronic device 1000.

[0154] Specifically, the impedance of the switch circuit 40 is controlled to increase, so as to increase the ratio of the third resonant current of the first radiation section 11 to the fourth resonant current of the second radiation section 12 .

[0155] In this embodiment, when the angle between the direction of the circularly polarized wave transmitted by the circularly polarized wave transceiver 2000 (for example, a satellite) and the preset direction is large, and the angle between the main radiation direction of the antenna assembly 100 and the preset direction is small, the control circuit 50 controls the impedance of the switch switching circuit 40 to switch to a relatively high impedance state, for example, switching from a small grounding inductor to a large grounding inductor, or switching from a grounding short-circuit branch N1 to a small grounding inductor, so as to increase the ratio of the third resonant current of the first radiation segment 11 to the fourth resonant current on the second radiation segment 12, so that the main radiation direction of the antenna assembly 100 is adjusted toward the side where the bottom edge 322 is located, so that the main radiation direction of the antenna assembly 100 corresponds to the direction in which the circularly polarized wave is transmitted by the circularly polarized wave transceiver 2000 (for example, a satellite), so as to ensure that the circularly polarized wave has a good signal strength.

[0156] See also Fig.29, the embodiment of the present application also provides a circular polarized wave control device 600, which is applied to an electronic device 1000. The electronic device 1000 includes an antenna assembly 100. The antenna assembly 100 includes a radiator 10 and a signal source 30. The radiator 10 includes a first radiating section 11 and a second radiating section 12 connected in a bent manner. The ratio of the length of the first radiating section 11 to the length of the second radiating section 12 is 1:3-3:1. The radiator 10 also includes a first free end A, a connection point B, a first grounding point C, a feeding point D and a second free end E. The connection point B is the connection between the first radiating section 11 and the second radiating section 12. The first free end A is an end of the first radiating section 11 away from the connection point B. The second free end E is an end of the second radiating section 12 away from the connection point B. The length between the first grounding point C and the connection point B is less than or equal to 1 / 16 of the wavelength of the second frequency band. The distance between the feeding point D and the first grounding point C is less than 1 / 16 of the wavelength of the second frequency band. The signal source 30 is electrically connected to the feeding point D. The signal source 30 is used to excite the radiator 10 to form a first resonance mode supporting the first frequency band and a second resonance mode supporting the second frequency band. The first resonance mode forms a first resonance current between the first free end A and the first grounding point C and returns to the ground through the first grounding point C. The first resonance mode forms a second resonance current between the second free end E and the first grounding point C and returns to the ground through the first grounding point C. The second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end A and the second free end E, and the resonance current of the second resonance mode includes a third resonance current located between the first free end A and the connection point B and a fourth resonance current located between the connection point B and the second free end E, and the third resonance current and the fourth resonance current form a circularly polarized wave.

[0157] The device 600 includes a control module 610. The control module 610 is used to control the ratio of the third resonant current of the first radiation section 11 to the fourth resonant current of the second radiation section 12, and control the main radiation direction of the circularly polarized wave. For specific implementation, please refer to the above step S100.

[0158] See also Fig.30 The embodiment of the present application further provides an electronic device 1000, including a memory 700 and a processor 800, wherein the memory 700 is used to store a computer program, and the processor 800 is used to call and run the computer program stored in the memory 700 to execute the circular polarization wave control method described in any one of the above embodiments. The processor 800 includes the above control circuit 50, or is used to control the above control circuit 50.

[0159] The memory 700 may be a separate device independent of the processor 800 , or may be integrated into the processor 800 .

[0160] It should be understood that the processor 800 of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step S of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor 800. The above-mentioned processor 800 can be a general-purpose processor 800, a digital signal processor 800 (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps S and logic block diagrams in the embodiments of the present application can be implemented or executed. The general-purpose processor 800 can be a microprocessor 800 or the processor 800 can also be any conventional processor 800, etc. The step S of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware decoding processor 800 to be executed, or it can be executed by a combination of hardware and software modules in the decoding processor 800. The software module may be located in a storage medium mature in the art such as a random access memory 700, a flash memory, a read-only memory 700, a programmable read-only memory 700 or an electrically erasable programmable memory 700, a register, etc. The storage medium is located in the memory 700, and the processor 800 reads the information in the memory 700 and completes the steps of the above method in combination with its hardware.

[0161] It can be understood that the memory 700 in the embodiment of the present application can be a volatile memory 700 or a non-volatile memory 700, or can include both volatile and non-volatile memories 700. Among them, the non-volatile memory 700 can be a read-only memory 700 (Read-Only Memory, ROM), a programmable read-only memory 700 (Programmable ROM, PROM), an erasable programmable read-only memory 700 (Erasable PROM, EPROM), an electrically erasable programmable read-only memory 700 (Electrically EPROM, EEPROM) or a flash memory. The volatile memory 700 can be a random access memory 700 (Random Access Memory, RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM 700 (SRAM), dynamic RAM 700 (DRAM), synchronous DRAM 700 (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DRRAM). It should be noted that the memory 700 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory 700.

[0162] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also regarded as the scope of protection of the present application.

Claims

1. An electronic device, characterized in that: An antenna assembly is included, the antenna assembly comprising: A radiator, comprising a first radiating section and a second radiating section connected in a bent manner; the radiator further comprises a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point being the connection between the first radiating section and the second radiating section, the first free end being an end of the first radiating section away from the connection point, and the second free end being an end of the second radiating section away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; and A signal source, the signal source is electrically connected to the feeding point, the signal source is used to excite the radiator to form a first resonance mode supporting a first frequency band and a second resonance mode supporting a second frequency band, the first resonance mode forms a first resonance current between the first free end and the first grounding point and returns to the ground through the first grounding point, the first resonance mode forms a second resonance current between the second free end and the first grounding point and returns to the ground through the first grounding point; the second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, the resonance current of the second resonance mode includes a third resonance current located between the first free end and the connection point and a fourth resonance current located between the connection point and the second free end, the third resonance current and the fourth resonance current are used to form a circularly polarized wave, and the radiation direction of the circularly polarized wave is related to the length ratio of the first radiation segment and the second radiation segment.

2. The electronic device according to claim 1, wherein: The electronic device includes a display screen, a frame and a back cover connected in sequence, the frame includes a top edge, a first side edge, a bottom edge and a second side edge connected in sequence, the first radiation section is arranged on the first side edge, the second radiation section is arranged on the top edge, the third resonant current and the fourth resonant current form a right-handed circularly polarized wave on the side where the display screen of the electronic device is located, and the third resonant current and the fourth resonant current form a left-handed circularly polarized wave that is mirror-symmetrical to the right-handed circularly polarized wave on the side where the back cover of the electronic device is located.

3. The electronic device according to claim 2, characterized in that: The electronic device also includes a reference floor, which is arranged in a space surrounded by the frame, the first grounding point is electrically connected to the reference floor, the first grounding point and the feeding point are both located in the second radiation section, the second resonant mode forms a transverse floor current on the reference floor, and the angle between the main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current and a preset direction is smaller than a preset angle, and the preset direction is the direction from the bottom edge to the top edge.

4. The electronic device according to claim 3, characterized in that: The ratio of the length of the first radiation section to the length of the second radiation section is 1:3 to 3:

1.

5. The electronic device according to claim 4, characterized in that: The ratio of the length of the first radiation segment to the length of the second radiation segment is 1:1, the angle between the main radiation direction of the circularly polarized wave and the preset direction is 60°, and the range covered by the circularly polarized wave in the preset direction is greater than or equal to 45°.

6. The electronic device according to claim 4, characterized in that: The ratio of the length of the first radiation segment to the length of the second radiation segment is less than 1:1, the angle between the main radiation direction of the circularly polarized wave and the preset direction is less than 55°, and the range covered by the circularly polarized wave in the preset direction is greater than or equal to 90°.

7. The electronic device according to claim 3, characterized in that: The main radiation direction of the circularly polarized wave formed by the third resonant current and the fourth resonant current is related to the ratio of the current intensities on the first radiation section and the second radiation section.

8. The electronic device according to claim 7, characterized in that: The antenna assembly also includes a switch switching circuit, one end of which is connected to the first grounding point, and the other end of which is grounded, and the switch switching circuit is used to adjust the ratio of the current intensity on the first radiation segment to the current intensity on the second radiation segment.

9. The electronic device according to claim 8, characterized in that: The antenna assembly also includes a control circuit electrically connected to the switch switching circuit, and the control circuit is used to control the switch switching circuit to adjust the ratio of the current intensity on the first radiation segment to the current intensity on the second radiation segment according to the receiving intensity of the circularly polarized wave being less than a preset intensity.

10. The electronic device according to claim 8, characterized in that: The resonant current distribution of the second resonant mode includes a first current region, a second current region and a third current region which are sequentially arranged, the second current region has a current intensity point, the current intensity of the first current region is less than the current intensity of the second current region, the current intensity of the third current region is less than the current intensity of the second current region, and the first grounding point is located in the first current region or the second current region; The switch switching circuit has a ground short-circuit state and at least one impedance state for the second frequency band. The switch switching circuit is used to adjust the input impedance of the first grounding point by switching the state to adjust the ratio of the current intensity on the first radiation segment to the current intensity on the second radiation segment.

11. The electronic device according to claim 10, characterized in that: The switch switching circuit includes a switch unit, a ground short-circuit branch and at least one impedance branch. One end of the switch unit is electrically connected to the first ground point, and the other end of the switch unit can be selectively connected to at least one of the ground short-circuit branch and the at least one impedance branch. The at least one impedance branch includes at least one ground inductive branch and / or at least one ground capacitive branch that are in an impedance state to the second frequency band.

12. The electronic device according to claim 10, characterized in that: The length between the first grounding point and the first free end is smaller than the length between the first grounding point and the second free end; When the switch switches the circuit to the ground short circuit state, the ratio of the current intensity on the first radiation segment to the current intensity on the second radiation segment is a first ratio, the angle between the main radiation direction of the circularly polarized wave and the preset direction is a first angle, the first angle is less than 55°, and the antenna assembly can communicate with the circularly polarized wave transceiver through the right-handed circularly polarized wave; When the switch circuit is switched to the impedance state, a ratio of the current intensity on the first radiation segment to the current intensity on the second radiation segment is a second ratio, and the second ratio is greater than the first ratio; The angle between the main radiation direction of the circularly polarized wave and the preset direction is a second angle, and the second angle is greater than 100°. The antenna assembly can communicate with a circularly polarized wave transceiver through the left-handed circularly polarized wave.

13. The electronic device according to any one of claims 1 to 12, characterized in that: The first resonant mode forms a 1 / 4 wavelength mode of the first frequency band between the second free end and the first grounding point, the intensity of the second resonant current is greater than the intensity of the first resonant current, the center frequency of the first frequency band is less than the center frequency of the second frequency band, and the difference between the center frequency of the first frequency band and the center frequency of the second frequency band is less than 1 GHz, and the first frequency band and the second frequency band form a continuous frequency band.

14. The electronic device according to any one of claims 1 to 12, characterized in that: The antenna assembly further includes a first parasitic radiator, the first parasitic radiator includes a third free end and a second grounding point, the third free end is arranged opposite to the second free end, and the second grounding point is grounded; The second resonance mode also forms a fifth resonance current on the third free end and the second grounding point in the same direction as the fourth resonance current; The radiator and the first parasitic radiator also form a third resonance mode supporting a third frequency band under the excitation of the signal source, the third resonance mode forms a sixth resonance current between the first ground point and the second free end, the third resonance mode forms a seventh resonance current between the third free end and the second ground point, the current intensity of the seventh resonance current is greater than the current intensity of the sixth resonance current, the direction of the seventh resonance current is opposite to the direction of the sixth resonance current, and the center frequency of the third frequency band is greater than the center frequency of the second frequency band.

15. The electronic device according to any one of claims 1 to 12, characterized in that: The antenna assembly further includes a second parasitic radiator, the second parasitic radiator includes a fourth free end and a third grounding point, the fourth free end is arranged opposite to the first free end, and the third grounding point is grounded; The second resonance mode also forms an eighth resonance current having the same direction as the third resonance current at the fourth free end and the third grounding point; The radiator and the second parasitic radiator also form a fourth resonance mode supporting a fourth frequency band under the excitation of the signal source, the fourth resonance mode forms a ninth resonance current between the first ground point and the first free end, the fourth resonance mode forms a tenth resonance current between the fourth free end and the third ground point, the current intensity of the tenth resonance current is greater than the current intensity of the ninth resonance current, the direction of the tenth resonance current is opposite to the direction of the ninth resonance current, and the center frequency of the fourth frequency band is greater than the center frequency of the second frequency band.

16. A method for controlling circularly polarized waves, applied to electronic equipment, characterized in that: The electronic device comprises an antenna assembly, the antenna assembly comprises a radiator and a signal source, the radiator comprises a first radiating section and a second radiating section connected in a bent manner, the radiator further comprises a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point is the connection between the first radiating section and the second radiating section, the first free end is an end of the first radiating section away from the connection point, and the second free end is an end of the second radiating section away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; The signal source is electrically connected to the feeding point, and the signal source is used to excite the radiator to form a first resonance mode supporting a first frequency band and a second resonance mode supporting a second frequency band, a first resonance current formed between the first free end and the first grounding point in the first resonance mode returns to the ground through the first grounding point, and a second resonance current formed between the second free end and the first grounding point in the first resonance mode returns to the ground through the first grounding point; The second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, the resonance current of the second resonance mode includes a third resonance current located between the first free end and the connection point and a fourth resonance current located between the connection point and the second free end, and the third resonance current and the fourth resonance current are used to form a circularly polarized wave; the method includes: The ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment is regulated to regulate the main radiation direction of the circularly polarized wave.

17. The method according to claim 16, characterized in that The antenna assembly further includes a switch switching circuit, one end of the switch switching circuit is connected to the first ground point, the other end of the switch switching circuit is grounded, and the switch switching circuit has a ground short circuit state and at least one impedance state for the second frequency band; Before regulating the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment, the method further includes: comparing the intensity of the circularly polarized wave received by the antenna assembly with a preset intensity; When the receiving intensity of the circularly polarized wave is less than a preset intensity, the switch switching circuit is controlled to switch from the ground short circuit state to the impedance state.

18. The method according to claim 17, characterized in that The regulating the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment comprises: reducing the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment, so that the angle between the main radiation direction of the circularly polarized wave and the preset direction is reduced, and the preset direction is the direction from the bottom edge of the electronic device to the top edge of the electronic device; or, The ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment is increased, so that the angle between the main radiation direction of the circularly polarized wave and the preset direction is increased, and the preset direction is the direction from the bottom edge of the electronic device to the top edge of the electronic device.

19. The method according to claim 18, characterized in that The reducing the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment comprises: Controlling the impedance of the switch circuit to decrease so as to reduce the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment; or, The increasing the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment comprises: The impedance of the switch circuit is controlled to increase so as to increase the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment.

20. A circular polarization wave control device, applied to electronic equipment, characterized in that: The electronic device comprises an antenna assembly, the antenna assembly comprises a radiator and a signal source, the radiator comprises a first radiating section and a second radiating section connected in a bent manner, the radiator further comprises a first free end, a connection point, a first grounding point, a feeding point and a second free end, the connection point is the connection between the first radiating section and the second radiating section, the first free end is an end of the first radiating section away from the connection point, and the second free end is an end of the second radiating section away from the connection point; the length between the first grounding point and the connection point is less than or equal to 1 / 16 of the wavelength of the second frequency band, and the distance between the feeding point and the first grounding point is less than 1 / 16 of the wavelength of the second frequency band; The signal source is electrically connected to the feeding point, and the signal source is used to excite the radiator to form a first resonance mode supporting a first frequency band and a second resonance mode supporting a second frequency band, a first resonance current formed between the first free end and the first grounding point in the first resonance mode returns to the ground through the first grounding point, and a second resonance current formed between the second free end and the first grounding point in the first resonance mode returns to the ground through the first grounding point; The second resonance mode is a 1 / 2 wavelength mode of the second frequency band formed between the first free end and the second free end, the resonance current of the second resonance mode includes a third resonance current located between the first free end and the connection point and a fourth resonance current located between the connection point and the second free end, and the third resonance current and the fourth resonance current are used to form a circularly polarized wave; the device includes: The control module is used to control the ratio of the third resonant current of the first radiation segment to the fourth resonant current of the second radiation segment, so as to control the main radiation direction of the circularly polarized wave.

21. An electronic device, characterized in that: It comprises a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 16 to 19.

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