Electronic device

Abstract

The invention provides electronic equipment. Each radiator is electrically connected with a reference floor; the feed network is electrically connected with each radiator; the signal source is electrically connected with the feed network and is used for providing an excitation signal; the switch switching unit is electrically connected between the signal source and the feed network, the switch switching unit is used for switching the working mode of the radiator into a single-feed mode or a double-feed mode, the single-feed mode is a mode in which the signal source independently supports one radiator to work, and the double-feed mode is a mode in which the signal source simultaneously supports two radiators to work through the feed network; when the two radiators switched to be connected with the signal source at the same time are in the single-feed mode, the efficiency difference of the two radiators in the same frequency band is smaller than or equal to first preset efficiency, and the phase difference between the two radiators in the double-feed mode is a first target phase difference; and the directivity coefficient of the two radiators in the double-feed mode is greater than that of the radiators in the single-feed mode. The electronic equipment provided by the invention improves the signal quality and ensures the stability of the signal quality.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an electronic device. Background Art

[0002] As the communication functions of electronic devices increase, the signal quality of electronic devices in various places has become a research focus. How to improve the signal quality of electronic devices and ensure the stability of signal quality has become a technical problem that needs to be solved. Summary of the invention

[0003] The present application provides an electronic device for improving signal quality and ensuring the stability of signal quality.

[0004] The present application provides an electronic device, including a reference floor and an antenna assembly, wherein the antenna assembly includes:

[0005] at least two radiators, each of which is electrically connected to the reference ground;

[0006] A feeding network, the feeding network electrically connecting each of the radiators;

[0007] a signal source, the signal source being electrically connected to the feed network and configured to provide an excitation signal; and

[0008] A switch switching unit, the switch switching unit is electrically connected between the signal source and the feeding network, the switch switching unit is used to switch the working mode of the radiator to a single-feed mode or a dual-feed mode, the single-feed mode is a mode in which the signal source supports the operation of one radiator alone, and the dual-feed mode is a mode in which the signal source supports the operation of two radiators simultaneously through the feeding network; the difference in efficiency of the two radiators that are switched to be simultaneously connected to the signal source in the same frequency band in the single-feed mode is less than or equal to a first preset efficiency, the phase difference between the two radiators in the dual-feed mode is a first target phase difference, and the directivity coefficients of the two radiators in the dual-feed mode are greater than the directivity coefficients of the radiators in the single-feed mode.

[0009] The electronic device provided by the present application, each radiator is electrically connected to a reference ground, a feeding network is electrically connected to each radiator, a signal source is electrically connected to the feeding network for providing an excitation signal, a switching unit is electrically connected between the signal source and the feeding network, and the switching unit is used to switch the working mode of the radiator to a single feed mode or a dual feed mode. The single feed mode is a mode in which the signal source supports the operation of one radiator alone, and the dual feed mode is a mode in which the signal source supports the operation of two radiators simultaneously through the feeding network; the difference in efficiency of the two radiators working in the dual feed mode in the same frequency band in the single feed mode is less than or equal to the first preset efficiency, the phase difference between the two radiators in the dual feed mode is the first target phase difference, and the directivity coefficient of the two radiators in the dual feed mode is greater than the directivity coefficient of the radiator in the single feed mode; with the above design, the antenna assembly can be switched to a dual feed mode with high directivity coefficient and high gain or to a single feed mode with strong omnidirectionality, and the two modes can be switched with each other to improve signal quality and ensure the stability of signal quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] 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.

[0011] Figure 1 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0012] Figure 2 It is a schematic diagram of a partial decomposition structure of an electronic device provided in an embodiment of the present application;

[0013] Figure 3 is a schematic diagram of the back of an electronic device provided in an embodiment of the present application;

[0014] Figure 4 is a structural schematic diagram of a first antenna assembly provided in an embodiment of the present application;

[0015] Figure 5 It is a circuit block diagram of a feeding network including a phase shifter in an antenna assembly provided by an embodiment of the present application;

[0016] Figure 6 is a circuit block diagram of a first radiator and a second radiator in a dual-feed mode provided in an embodiment of the present application;

[0017] Figure 7 is a circuit block diagram of a first radiator in a single-feed mode provided in an embodiment of the present application;

[0018] Figure 8 is a circuit block diagram of a second radiator in a single-feed mode provided by an embodiment of the present application;

[0019] Fig. 9It is the efficiency curve of the first radiator and the second radiator provided in the embodiment of the present application both working in the B28 frequency band in the single-feed mode;

[0020] Fig.10 : This is the efficiency curve of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode and in the same phase (both are 0°) and both work in the B28 frequency band;

[0021] Fig.11 The efficiency curves of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode, the phase of the first radiator is 90°, the phase of the second radiator is 0°, and both operate in the B28 frequency band;

[0022] Fig.12 The efficiency curves of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode, the phase of the first radiator is 180°, the phase of the second radiator is 0°, and both operate in the B28 frequency band;

[0023] Fig.13 It is the efficiency curve of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode, in the same phase (0°, 90°, 180°) and both working in the B28 frequency band;

[0024] Fig.14 This is the efficiency curve of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode, with a phase difference of 180° and both working in the B28 frequency band;

[0025] Fig.15 This is the efficiency curve of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode, with a phase difference of 90° and both working in the B28 frequency band;

[0026] Fig.16 It is the basic characteristic diagram of phased array antenna;

[0027] Fig.17a It is a 3D radiation pattern of a radiator operating in the B28 frequency band in a single-feed mode provided in an embodiment of the present application;

[0028] Fig.17b is a 3D directional diagram of the first radiator and the second radiator provided in an embodiment of the present application in the same phase (0°) in the dual-feed mode;

[0029] Fig.17c The 3D directional diagram of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode and the phase of the first radiator leading by 50°;

[0030] Fig.17dThe 3D directional diagram of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode and the phase of the first radiator leading by 70°;

[0031] Fig.17e The 3D directional diagram of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode and the phase of the first radiator leading by 90°;

[0032] Fig.17f The 3D directional diagram of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode and the phase of the first radiator leading by 180°;

[0033] Figure 17g The 3D directional diagram of the first radiator and the second radiator provided in the embodiment of the present application in the dual-feed mode and the phase of the first radiator leading by 270°;

[0034] Fig.18a It is the 2D pattern of the radiator operating in the B28 band in single-feed mode;

[0035] Fig.18b The quasi-binary asymmetric array antenna provided in this embodiment has a radiation main lobe directivity diagram when the phase difference is 0°, the phase leading of the first radiator is 50°, the phase leading of the first radiator is 70°, the phase leading of the first radiator is 90°, the phase leading of the first radiator is 180°, and the phase leading of the first radiator is 270°;

[0036] Fig.19 The antenna assembly provided by the embodiment of the present application includes a circuit block diagram of a phase control unit, a first phase shifter and a second phase shifter;

[0037] Fig. 20 is a structural schematic diagram of a second antenna assembly provided in an embodiment of the present application;

[0038] Fig.21 is an efficiency curve of a first radiator and a second radiator in a mirror-image arrangement in a single-feed mode provided in the second embodiment of the present application;

[0039] Fig. 22 The efficiency curves of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode, the phase of the first radiator is 0°, the phase of the second radiator is 0°, and both operate in the B28 frequency band;

[0040] Fig.23 The efficiency curves of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode, the phase of the first radiator is 90°, the phase of the second radiator is 0°, and both operate in the B28 frequency band;

[0041] Fig.24The efficiency curves of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode, the phase of the first radiator is 180°, the phase of the second radiator is 0°, and both operate in the B28 frequency band;

[0042] Fig.25 The efficiency curves of the first radiator and the second radiator provided in the embodiment of the present application in the single-feed mode and the dual-feed mode, the phase of the first radiator is 270°, the phase of the second radiator is 0°, and both operate in the B28 frequency band;

[0043] Fig.26 It is the radiation main lobe directivity diagram of the quasi-binary array antenna provided in the embodiment of the present application when the phase difference is 0°, the phase of the first radiator is 90° ahead, the phase of the first radiator is 180° ahead, and the phase of the first radiator is 270° ahead;

[0044] Fig. 27 It is a circuit block diagram of a feeding network including a phase shifter and a power divider in an antenna assembly provided in an embodiment of the present application;

[0045] Fig.28 is the efficiency of the first radiator in the single-feed mode and the second radiator in the single-feed mode in the left-hand holding scenario provided by the embodiment of the present application;

[0046] Fig.29 It is the efficiency provided by the embodiment of the present application in the left-hand holding scenario, in which the phases of the first radiator in the single-feed mode, the second radiator in the single-feed mode, and the first radiator and the second radiator in the dual-feed mode are all 0°;

[0047] Fig.30 It is the efficiency of the first radiator in the single-feed mode, the second radiator in the single-feed mode, and the first radiator in the dual-feed mode in the left-hand holding scenario provided by the embodiment of the present application, where the phase of the first radiator is 50° ahead of the second radiator;

[0048] Fig.31 The efficiency provided by the embodiment of the present application in the left-hand holding scenario is that the second radiator is in single-feed mode and the first radiator is 50° ahead of the second radiator in dual-feed mode, and the power ratios are 1:1, 1:2, and 1:100 respectively;

[0049] Fig.32 The efficiency provided by the embodiment of the present application in the left-hand holding scenario is that the second radiator is in single-feed mode and the first radiator is 50° ahead of the second radiator in dual-feed mode, and the power ratios are 1:1, 2:1, and 100:1 respectively;

[0050] Fig.33This is the efficiency comparison of the first radiator in the single-feed mode with the initial phases of 0°, 50°, and 288° in the left-hand holding scenario provided by the embodiment of the present application;

[0051] Fig.34 The efficiency curves of the electronic device 1000 provided in the embodiment of the present application in the left-hand holding scenario, in which the phases of the first radiator and the second radiator in the single-feed mode and the dual-feed mode are respectively (0°, 0°), (90°, 0°), (180°, 0°), (270°, 0°), and both operate in the B28 frequency band;

[0052] Fig.35 It is a structural schematic diagram of the third antenna assembly provided in an embodiment of the present application.

[0053] Description of Figure Numbers:

[0054] Electronic device 1000; antenna assembly 100; display screen 200; middle frame 300; back cover 400; middle plate 310; frame 320; reference ground 500; circuit board 600; main board 610; sub-board 620; first reference ground edge 510; second reference ground edge 520; third reference ground edge 530; fourth reference ground edge 540; radiator 10; feed network 20; signal source 30; switch switching unit 40; first antenna unit 100a; second antenna unit 100b; first matching Circuit M1; first matching circuit M2; first radiator 11; second radiator 12; third antenna unit 100c; controller 700; first grounding point A1; first feeding point B1; first free end C1; second grounding point A2; second feeding point B2; second free end C2; phase shifter 21; phase control unit 810; first phase shifter 211; second phase shifter 212; power control unit 820; first power divider 221; second power divider 222; third radiator 13; fourth radiator 14. DETAILED DESCRIPTION

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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 smart wearable device, and other devices with communication functions. The present embodiment of the present application is described by taking a mobile phone as an example, and other electronic devices may refer to this embodiment.

[0059] See also Figure 2 , Figure 21 is a partial exploded schematic diagram of an electronic device 1000. The electronic device 1000 includes an antenna assembly 100, and the working environment of the antenna assembly 100 is illustrated by taking the electronic device 1000 as a mobile phone as an example. The electronic device 1000 also 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 side of the middle plate 310. The frame 320 may be a conductive frame. Of course, in other embodiments, the electronic device 1000 may not have a 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 600 (main board 610, sub-board 620), camera modules, receiver modules, batteries, various sensors and other devices. One side of the frame 320 is connected to the edge of the display screen 200, and the other side of the frame 320 is connected to 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 are separate structures. 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.

[0060] See also Figure 3 , Figure 3 3 is a back view of the electronic device 1000. The frame 320 includes a top edge 321 and a bottom edge 322 that are arranged opposite to each other, and a first side edge 323 and a second side edge 324 that are connected to the top edge 321 and the bottom edge 322. The top edge 321 is the side away from the ground when the user holds the electronic device 1000 and uses it in portrait mode, and the bottom edge 322 is the side facing the ground when the user holds the electronic device 1000 and uses it in portrait mode. The first side edge 323 is the left side when the user holds the electronic device 1000 and uses it in portrait mode. The second side edge 324 is the right side when the user holds the electronic device 1000 and uses it in portrait mode. Of course, the first side edge 323 can also be the right side when the user holds the electronic device 1000 and uses it in portrait mode. The second side edge 324 is the left side when the user holds the electronic device 1000 and uses it in portrait mode. The top edge 321 and the bottom edge 322 are a pair of short sides, and the first side edge 323 and the second side edge 324 are a pair of long sides, and the size of the long side is greater than the size of the short side.

[0061] See also Figure 3 and Figure 4 The electronic device further includes a reference floor 500. The reference floor 500 is disposed in the frame 320.

[0062] The reference floor 500 includes but is not limited to the metal alloy portion (e.g., aluminum alloy) of the middle plate 310 and the reference ground metal portion of the circuit board 600 (including the main board 610 and the sub-board 620). Generally speaking, the reference ground system in the electronic device 1000 can be equivalent to a roughly rectangular shape, so it is called the reference floor 500. The reference floor 500 does not indicate that the reference ground is in the shape of a plate and is a rectangular plate. The outer contour of the reference floor 500 is close to the inner side of the frame 320.

[0063] Taking the reference floor 500 as an example, the reference ground edge of the reference floor 500 includes but is not limited to a straight edge or a regular edge. Because devices are set up or other structures are avoided as needed in the mobile phone, various grooves, holes, etc. are opened on the reference ground edge of the reference floor 500.

[0064] See also Figure 4 The reference floor 500 includes a first reference ground edge 510, a second reference ground edge 520, a third reference ground edge 530 and a fourth reference ground edge 540 connected end to end in sequence. The first reference ground edge 510 and the third reference ground edge 530 are transverse edges. The second reference ground edge 520 and the fourth reference ground edge 540 are longitudinal edges.

[0065] See also Figure 3 and Figure 4 , the first reference ground edge 510 is opposite to and spaced from the top edge 321. The second reference ground edge 520 is opposite to and spaced from the first side edge 323. The third reference ground edge 530 is opposite to and spaced from the bottom edge 322. The fourth reference ground edge 540 is opposite to and spaced from the second side edge 324.

[0066] See also Figure 4 and Figure 5 The antenna assembly 100 includes at least two radiators 10, a feeding network 20, a signal source 30 and a switch unit 40.

[0067] Optionally, the radiator 10 is made of conductive materials, including but not limited to conductive materials such as metals and alloys.

[0068] The present application does not specifically limit the shape of the radiator 10. For example, the shape of the radiator 10 includes but is not limited to a strip, a sheet, a rod, a coating, a film, and the like. Figure 4 The shape of the radiator 10 shown is only an example and does not limit the shape of the radiator 10 provided in the present application. In this embodiment, the radiator 10 is in a strip shape. In this embodiment, the radiator 10 extends in a straight line or other trajectory. The radiator 10 can be a line with uniform width on the extension trajectory, or a strip with varying widths such as a gradient width and a widened area.

[0069] The present application does not specifically limit the form of the radiator 10. Optionally, the specific 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 conductor located in or on the frame 320, a flexible printed circuit board 600 antenna formed on a flexible printed circuit board 600 (FPC), a laser direct structured antenna by laser direct structure (LDS), a printed direct structured antenna by printing direct structure (PDS), a conductive sheet antenna (such as a metal bracket antenna), etc. The present application takes the radiator 10 as a part of the frame 320 as an example.

[0070] The radiator 10 is disposed along the reference ground edge of the reference floor 500 and is spaced apart from the reference ground edge of the reference floor 500. The present application does not specifically limit the spacing between the radiator 10 and the reference ground edge of the reference floor 500, such as 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc.

[0071] Each of the radiators 10 is electrically connected to the reference ground 500 , that is, a plurality of radiators 10 share one reference ground 500 .

[0072] See also Figure 4 and Figure 5 , the feed network 20 is electrically connected to each of the radiators 10. For example, each radiator 10 is provided with a feed point, and the feed network 20 includes a plurality of feed ports, each of which is electrically connected to a feed point of the radiator 10. The feed point is a position on the radiator 10 where the feed port is electrically connected. The electrical connection method includes but is not limited to direct electrical connection or coupled electrical connection. The connection medium of the direct electrical connection includes but is not limited to conductive springs, RF connecting wires, conductive ejector pins, etc.

[0073] See also Figure 6 The feeding network 20 includes a plurality of matching circuits (e.g., M1 and M2). Each matching circuit M is electrically connected to a radiator 10. The matching circuit M is electrically connected between the feeding point and the signal source 30. The matching circuit M is used to adjust the impedance matching between the port of the signal source 30 and the port of the radiator 10. The matching circuit M includes at least one of a capacitor, an inductor, a resistor, and the like.

[0074] The signal source 30 is electrically connected to the feeding network 20 and is used to provide an excitation signal to the radiator 10 . The radiator 10 transmits and receives electromagnetic waves under the excitation of the excitation signal.

[0075] See also Figure 4 The signal source 30 includes but is not limited to a radio frequency transceiver chip. The signal source 30 is disposed in the space surrounded by the frame 320. Specifically, the signal source 30 is disposed on the main board 610 (see Figure 2 )superior.

[0076] The switch unit 40 is electrically connected between the signal source 30 and the feeding network 20. The switch unit 40 is used to switch the working mode of the radiator 10 to a single-feed mode or a dual-feed mode.

[0077] See also Figure 7 , the single-feed mode is a mode in which the signal source 30 supports the operation of one radiator 10 alone. For example, the multiple radiators 10 include a first radiator 11 and a second radiator 12. The switch unit 40 switches to electrically connect the first radiator 11 to the signal source 30, and disconnects the second radiator 12 from the signal source 30. At this time, the working mode of the first radiator 11 is the single-feed mode, and the working part of the antenna assembly 100 at this time (the second radiator 12 is not working at this time) is defined as the first antenna unit 100a.

[0078] See also Figure 8 , the switch switching unit 40 is switched so that the second radiator 12 is electrically connected to the signal source 30, and the first radiator 11 is disconnected from the signal source 30. At this time, the working mode of the second radiator 12 is the single feed mode, and the working part of the antenna assembly 100 at this time (the first radiator 11 is not working at this time) is defined as the second antenna unit 100b.

[0079] The plurality of matching circuits M include a first matching circuit M1 and a first matching circuit M2. The first matching circuit M1 is electrically connected between the first radiator 11 and the signal source 30, and the first matching circuit M2 is electrically connected between the second radiator 12 and the signal source 30.

[0080] See also Figure 6 , the dual-feed mode is a mode in which the signal source 30 supports the operation of the two radiators 10 at the same time through the feeding network 20. For example, the multiple radiators 10 include a first radiator 11 and a second radiator 12. The switch unit 40 switches to electrically connect the first radiator 11 to the signal source 30, and the second radiator 12 to the signal source 30. At this time, the working mode of the first radiator 11 and the second radiator 12 is a dual-feed mode, that is, the signal source 30 excites the first radiator 11 and the second radiator 12 at the same time, and the working part of the antenna assembly 100 at this time is defined as the third antenna unit 100c.

[0081] The switch unit 40 can switch between the first antenna unit 100a, the second antenna unit 100b and the third antenna unit 100c.

[0082] The difference in efficiency of the two radiators 10 switched to be simultaneously connected to the signal source 30 in the same frequency band in the single-feed mode is less than or equal to the first preset efficiency. For example, the switch unit 40 switches the first radiator 11 and the second radiator 12 to be electrically connected to the signal source 30 at the same time, that is, the first radiator 11 and the second radiator 12 work in the dual-feed mode. Then, the difference in efficiency of the first radiator 11 when it is electrically connected to the signal source 30 alone and the second radiator 12 when it is electrically connected to the signal source 30 alone in supporting the same frequency band is less than or equal to the first preset efficiency, making it easier to combine two antenna units with similar working efficiency into an array antenna.

[0083] The present application does not specifically limit the effective frequency band supported by the first radiator 11 when single-feeding and the effective frequency band supported by the second radiator 12 when single-feeding. For example, the effective frequency band supported by the first radiator 11 when single-feeding and the effective frequency band supported by the second radiator 12 when single-feeding include but are not limited to at least one of the LB band (less than 1 GHz), the MHB band (1-3 GHz), the UHB band (greater than 3 GHz), the Wi-Fi band, the GPS band, etc.

[0084] The effective frequency band is the frequency band range corresponding to the resonant mode in the S11 curve when the return loss is about -5dB (of course, it can also be -6dB, -7dB, -8dB, -9dB, -10dB, etc.).

[0085] For example, the effective frequency band of the first radiator 11 in the single-feed mode is the LB band. The effective frequency band of the second radiator 12 in the single-feed mode is the LB band. By further example, the difference between the efficiency of the first radiator 11 in the single-feed mode supporting the B28 band and the efficiency of the second radiator 12 in the single-feed mode supporting the B28 band is less than or equal to the first preset efficiency. Of course, by another example, the difference between the efficiency of the first radiator 11 in the single-feed mode supporting the B28 band and the efficiency of the second radiator 12 in the single-feed mode supporting the B20 band is less than or equal to the first preset efficiency, which makes it easier to combine two antenna units with similar working efficiency into an array antenna.

[0086] By designing that the difference in efficiency of the two radiators 10 switched to be simultaneously connected to the signal source 30 in the same frequency band in the single feed mode is less than or equal to the first preset efficiency, it is easier to combine two antenna units with similar working efficiency into an array antenna.

[0087] The present application does not specifically limit the first preset efficiency, and the first radiator 11 and the second radiator 12 can support the same frequency band (for example, both are LB bands) with similar efficiency when they are electrically connected to the signal source 30 alone. For example, the first preset efficiency is 3 dB. Of course, in other embodiments, the first preset efficiency can also be 2.5 dB, 2.8 dB, 2.9 dB, 2.3 dB, 2 dB, etc.

[0088] The embodiment of the present application supports the same frequency band, which is, for example, 700MHz-900MHz, and includes the same sub-frequency band, for example, the first radiator 11 and the second radiator 12 both work in the B28 frequency band. The same frequency band includes adjacent sub-frequency bands, for example, the B28 frequency band and the B20 frequency band belong to the same frequency band.

[0089] The phase difference between the two radiators 10 operating in the dual-feed mode is the first target phase difference. For example, when the signal source 30 provides the first excitation signal to the first radiator 11 and the second excitation signal to the second radiator 12 at the same time, the difference between the phase of the first excitation signal and the phase of the second excitation signal is the first target phase difference. By setting the first target phase difference, the directivity coefficients of the two radiators 10 in the dual-feed mode are greater than the directivity coefficients of the radiators 10 in the single-feed mode. In other words, by setting the phase difference between the first excitation signal of the first radiator 11 and the second excitation signal of the second radiator 12 as the first target phase difference, the directivity coefficient of the third antenna unit 100c formed by the first radiator 11, the second radiator 12, the feeding network 20, and the signal source 30 is greater than the directivity coefficient of the first antenna unit 100a formed by the first radiator 11, the feeding network 20, and the signal source 30, and is also greater than the directivity coefficient of the second antenna unit 100b formed by the second radiator 12, the feeding network 20, and the signal source 30. For example, the first antenna unit 100a and the second antenna unit 100b are both omnidirectional antennas, with directivity coefficients less than or equal to 2dBi. The third antenna unit 100c is a directional antenna, with a directivity coefficient greater than 2dBi.

[0090] After the radiator 10 of the antenna assembly 100 is switched from the single feed mode to the dual feed mode, the directivity coefficient of the antenna assembly 100 increases, the antenna gain is enhanced, and the antenna radiation efficiency is increased. The single feed mode and the dual feed mode can be switched according to the signal strength in the mode to improve the signal quality and ensure the stability of the signal quality.

[0091] The present application does not limit the size of the first target phase difference. Optionally, by setting the difference between the phase of the first excitation signal of the first radiator 11 and the phase of the second excitation signal of the second radiator 12 as the first target phase difference, the efficiency of the third antenna unit 100c in the dual-feed mode in free space is greater than or equal to -7dB. That is, the first target phase difference satisfies that the efficiency of the third antenna unit 100c in the dual-feed mode in free space is greater than or equal to -7dB.

[0092] The electronic device 1000 provided in the present application, each radiator 10 is electrically connected to the reference ground 500, the feeding network 20 is electrically connected to each radiator 10, the signal source 30 is electrically connected to the feeding network 20, and is used to provide an excitation signal, the switching unit 40 is electrically connected between the signal source 30 and the feeding network 20, and the switching unit 40 is used to switch the working mode of the radiator 10 to a single-feed mode or a dual-feed mode. The single-feed mode is a mode in which the signal source 30 supports the operation of one radiator 10 alone, and the dual-feed mode is a mode in which the signal source 30 supports the operation of two radiators 10 at the same time through the feeding network 20 ; The difference in efficiency between the two radiators 10 working in the dual-feed mode in the same frequency band in the single-feed mode is less than or equal to the first preset efficiency, the phase difference between the two radiators 10 in the dual-feed mode is the first target phase difference, and the directivity coefficient of the two radiators 10 in the dual-feed mode is greater than the directivity coefficient of the radiator 10 in the single-feed mode; the above design enables the antenna assembly 100 to switch to a dual-feed mode with a high directivity coefficient and high gain or to a single-feed mode with strong omnidirectionality, and the two modes can be switched with each other to improve signal quality and ensure the stability of signal quality.

[0093] The present application does not limit the structural form of the radiator 10. For example, the radiator 10 includes but is not limited to an IFA antenna, a T-type antenna, and the like.

[0094] For ease of explanation, the antenna unit formed by the first radiator 11, the feeding network 20, and the signal source 30 is defined as the first antenna unit 100a. The antenna unit formed by the second radiator 12, the feeding network 20, and the signal source 30 is the second antenna unit 100b. The antenna unit formed by the first radiator 11, the second radiator 12, the feeding network 20, and the signal source 30 is the third antenna unit 100c. Among them, the working mode of the first antenna unit 100a and the second antenna unit 100b is a single feed mode, and the working mode of the third antenna unit 100c is a dual feed mode. Unless otherwise specified, the electronic device 1000 is in a free scene, and the first radiator 11 and the second radiator 12 work with equal power in the dual feed mode.

[0095] The directivity coefficient of the directional pattern of the resonant mode formed by the radiator 10 in the single-feed mode is less than or equal to 2dBi. Furthermore, the directivity coefficient of the first antenna unit 100a or the second antenna unit 100b is greater than -1dBi and less than or equal to 2dBi. Among them, the angle covered by the directivity coefficient greater than 0dBi is greater than 180 degrees, and it has omnidirectionality. The first antenna unit 100a and the second antenna unit 100b are both omnidirectional antennas.

[0096] However, in scenarios where the first antenna unit 100a or the second antenna unit 100b has poor operating signals, such as in some scenarios with weak signal strength (elevators, garages, high-rise buildings, etc.), poor signals may occur. Based on this, the electronic device 1000 switches the switch switching unit 40 of the antenna assembly 100 to a third antenna unit 100c with a certain directivity. The third antenna unit 100c has a higher directivity coefficient and thus has better radiation efficiency, thereby increasing signal strength to improve signal quality and ensure the stability of signal quality.

[0097] Furthermore, the third antenna unit 100c in the dual-feed mode forms a target resonance mode that supports the target frequency band. The directivity coefficient of the directional pattern of the target resonance mode is greater than 2dBi, and the directivity coefficient indicates that the third antenna unit 100c is directional. And the maximum scanning angle of the directional pattern of the target resonance mode is greater than or equal to 90°. The change in the directionality of the radiation main lobe of the directional pattern of the third antenna unit 100c conforms to the law of angle scanning change of the phased array antenna. The directional pattern characteristics of the third antenna unit 100c are similar to the directional pattern characteristics of the phased array array antenna (hereinafter referred to as the array antenna). The directional pattern of the array antenna has a certain directivity (for example, greater than 2dBi) and a relatively large maximum scanning angle (for example, greater than or equal to 90°).

[0098] In general, a conventional array antenna has multiple array elements whose reference grounds are independent of each other, and the multiple array elements are mirror-symmetrical, such as a phased array antenna.

[0099] In the third antenna unit 100c in the dual-feed mode in the present application, the first radiator 11 and the second radiator 12 share the same reference floor 500, and the first radiator 11 and the second radiator 12 may be different antenna structures, for example, the first radiator 11 is an IFA antenna, and the second radiator 12 is a T-type antenna. The first radiator 11 and the second radiator 12 may also be non-mirror-symmetric structures.

[0100] From the above, it can be known that the technicians of this application designed the directional patterns of multiple array elements (radiators 10) with different structures and non-mirror symmetry to have the characteristics of the directional pattern of a phased array antenna, so as to form a radiation performance with a larger directivity coefficient, a stronger gain, and a large scanning angle, so as to improve the signal transmission efficiency. The third antenna unit 100c in the dual-feed mode herein can be referred to as a "quasi-binary array antenna". When the first radiator 11 and the second radiator 12 are non-mirror symmetric structures, the third antenna unit 100c in the dual-feed mode can be referred to as a "quasi-binary asymmetric array antenna". When the first radiator 11 and the second radiator 12 are mirror symmetric structures, the third antenna unit 100c in the dual-feed mode can be referred to as a "quasi-binary symmetric array antenna".

[0101] The following is a description of the quasi-binary asymmetric array antenna provided by the present application in conjunction with the accompanying drawings. It should be noted that, unless otherwise specified, the performance is for a free scenario.

[0102] Optional, see Figure 4 , the two radiators 10 working in the dual-feed mode are non-mirror structures.

[0103] Since the space on the electronic device 1000 is limited, especially the space on the frame 320 is limited, other antennas need to be arranged on the frame 320 so that the electronic device 1000 has more communication functions. In this case, the two radiators 10 of the third antenna unit 100c may be designed to be asymmetric. For example, the two radiators 10 are respectively arranged on the bottom edge 322 and the side. Or for efficiency considerations, the two radiators 10 have different structures. Therefore, the present application forms the third antenna unit 100c in the dual-feed mode into a "quasi-binary asymmetric array antenna". Among them, "quasi-binary asymmetric array antenna" means that the third antenna unit 100c in the dual-feed mode is not independent in structure and is not mirror-symmetrical, and strictly does not belong to a phased array antenna, but has the directional pattern law of a phased array antenna.

[0104] Optionally, taking the case where the number of radiators 10 is two, the plurality of radiators 10 include a first radiator 11 and a second radiator 12. The first radiators 11 are arranged at intervals along the longitudinal edge. At least a portion of the second radiators 12 are arranged at intervals along the transverse edge.

[0105] Optionally, the first radiator 11 forms a resonant mode supporting the LB frequency band in the single-feed mode (i.e., the first antenna unit 100a). The second radiator 12 forms a resonant mode supporting the LB frequency band in the single-feed mode (i.e., the second antenna unit 100b). The frequency band supported by the first radiator 11 and the second radiator 12 in the dual-feed mode (i.e., the third antenna unit 100c) is the LB frequency band.

[0106] See also Figure 4 , the main current formed by the first radiator 11 on the reference floor 500 in the single-feed mode (i.e., the first antenna unit 100a) is a longitudinal current. When the first radiator 11 supports the LB band in the single-feed mode, the longitudinal dimension of the reference floor 500 is approximately 1 / 2 wavelength of the LB band, so that the current in the longitudinal direction of the reference floor 500 is likely to form a characteristic mode of the 1 / 2 wavelength mode of the reference floor 500. The more longitudinal currents of the reference floor 500, the greater the contribution of the reference floor 500 to the LB band radiation, and the more the radiation efficiency can be improved, that is, the longitudinal current mode formed on the reference floor 500 can improve the radiation efficiency of the first antenna unit 100a.

[0107] See also Figure 4 In addition, the main current formed by the second radiator 12 on the reference floor 500 in the single-feed mode (i.e., the second antenna unit 100b) is a transverse current. Since the transverse dimension is smaller than 1 / 2 wavelength of the LB band, the comprehensive performance after being held by the hand can make up for the problem that the transverse dimension is smaller than 1 / 2 wavelength of the LB band, so that the radiation efficiency of the second radiator 12 for the LB band is increased, that is, the transverse current mode formed on the reference floor 500 can improve the radiation efficiency of the first antenna unit 100a in the handheld scenario.

[0108] For example, see Figure 4 The first radiators 11 are arranged at intervals along the second reference ground edge 520. Most of the second radiators 12 are arranged at intervals along the third reference ground edge 530, and a small part of the second radiators 12 are arranged at intervals along the fourth reference ground edge 540 to avoid the charging port at the bottom of the mobile phone.

[0109] The antenna assembly 100 provided in the embodiment of the present application designs the positions of the first radiator 11 and the second radiator 12. When the switch unit 40 switches to the single feed mode of the first radiator 11, the first radiator 11 excites more longitudinal currents on the reference floor 500 in the single feed mode to improve the radiation efficiency; when the switch unit 40 switches to the single feed mode of the second radiator 12, the second radiator 12 excites more transverse currents on the reference floor 500 in the single feed mode to improve the handheld performance; when the switch unit 40 switches to the dual feed mode of the first radiator 11 and the second radiator 12, the first radiator 11 and the second radiator 12 form a radiation direction mode of an array antenna with a larger directivity coefficient, a higher gain, and a large maximum scanning angle. By adjusting the direction of the electronic device 1000, a stronger signal communication quality can be obtained.

[0110] See also Figure 4, the electronic device 1000 further includes a controller 700. The controller 700 is electrically connected to the switch switching unit 40. The controller 700 is used to control the multiple radiators 10 to work in the single-feed mode or two target radiators 10 in the multiple radiators 10 to work in the dual-feed mode according to the signal strength of the multiple radiators 10 in the single-feed mode and the dual-feed mode.

[0111] Specifically, the controller 700 may be based on the signal strength of the first radiator 11 and the second radiator 12 in the single feed mode and the dual feed mode. For example, the controller 700 obtains the signal strength of the first antenna unit 100a in the single feed mode as the first signal strength, the controller 700 obtains the signal strength of the second antenna unit 100b in the single feed mode as the second signal strength, and the controller 700 obtains the signal strength of the third antenna unit 100c in the single feed mode as the third signal strength. The controller 700 compares the first signal strength, the second signal strength, and the third signal strength, and determines whether the working mode of the first radiator 11 and the second radiator 12 is the single feed mode or the dual feed mode according to the strongest signal value. When the first signal strength is the largest, the controller 700 controls the switch switching unit 40 to switch to the first radiator 11 being electrically connected to the signal source 30 alone, and the first antenna unit 10a is working. When the second signal strength is the largest, the controller 700 controls the switch switching unit 40 to switch to the second radiator 12 being electrically connected to the signal source 30 alone, and the second antenna unit 100b is working. When the third signal strength is maximum, the controller 700 controls the switch unit 40 to switch the first radiator 11 and the second radiator 12 to be electrically connected to the signal source 30, and the first radiator 11 and the second radiator 12 work at the first target phase difference, and the third antenna unit 100c works.

[0112] Generally, since the first antenna unit 100a and the second antenna unit 100b are omnidirectional antennas, the directional gain of the third antenna unit 100c is higher. Therefore, when the signal quality of the first antenna unit 100a and the second antenna unit 100b is poor, the third antenna unit 100c can be switched to work, and the direction of the electronic device 1000 can be adjusted so that the maximum scanning angle range of the third antenna unit 100c is consistent with the direction of the strong signal source, thereby achieving better signal quality.

[0113] Optional, see Figure 4 The first radiator 11 includes a first grounding point A1, a first feeding point B1 and a first free end C1 which are arranged in sequence. The second radiator 12 includes a second grounding point A2, a second feeding point B2 and a second free end C2 which are arranged in sequence. The first grounding point A1 and the second grounding point A2 are both electrically connected to the reference ground 500. The feeding network 20 is electrically connected to the first feeding point B1 and the second feeding point B2.

[0114] The first free end C1 is an end portion after an insulating gap is set on the frame 320. The insulating gap is filled with insulating material to insulate the first free end C1 from the frame 320 on the other side of the insulating gap and improve the overall structural strength of the frame 320. The first grounding point A1 is the position where the first radiator 11 is electrically connected to the reference floor 500, and its electrical connection includes but is not limited to physical connection (integrated molding), electrical connection through conductive springs, conductive ejector pins, etc.

[0115] The second free end C2 is the other end after the insulating gap is set on the frame 320. The second grounding point A2 is the position where the second radiator 12 is electrically connected to the reference ground 500, and its electrical connection includes but is not limited to physical connection (integrated molding), electrical connection through conductive springs, conductive pins, etc.

[0116] Of course, in other optional implementations, the first radiator 11 may also be a T-shaped antenna.

[0117] In the following, the first radiator 11 and the second radiator 12 are both IFA antennas, the first radiator 11 is arranged along the second reference ground edge 520, most of the second radiator 12 is arranged along the third reference ground edge 530, and the first radiator 11 and the second radiator 12 both work in the B28 (703MHz-803MHz) frequency band as an example, and the effect of the phase on the efficiency of the first radiator 11 and the second radiator 12 in the single-feed mode and the dual-feed mode is illustrated. Unless otherwise specified, the first radiator 11 and the second radiator 12 in the dual-feed mode in this application work with equal power.

[0118] See also Fig. 9 , Fig. 9 This is the efficiency curve of the first radiator 11 and the second radiator 12 provided in the first embodiment, both working in the B28 frequency band in the single-feed mode.

[0119] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode.

[0120] Please refer to Table 1-1, which is Fig. 9Provided is a statistical table of average efficiency in the B28 frequency band. It can be seen from the table that the average efficiency of the first radiator 11 (such as LB-1 in Table 1-1) in the B28 frequency band in the single-feed mode is -7.4dB. The average efficiency of the second radiator 12 (such as LB-2 in Table 1-1) in the B28 frequency band in the single-feed mode is -5.8dB.

[0121] Table 1-1

[0122] Frequency band LB-1 LB-2 B28 -7.4dB -5.8dB

[0123] See also Fig.10 , Fig.10 The first embodiment provides an efficiency curve of the first radiator 11 and the second radiator 12 in the single-feed mode and the dual-feed mode with the same phase (both are 0°) and both working in the B28 frequency band. At this time, the first radiator 11 and the second radiator 12 form a quasi-binary asymmetric array in the dual-feed mode.

[0124] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phases both being 0°.

[0125] Curve a2 is the total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is the total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is the total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phases both being 0°.

[0126] As can be seen from the figure, the efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band in the dual-feed mode with a phase of 0° is higher than the efficiency of the first radiator 11 in the single-feed mode, and is slightly improved compared to the efficiency of the second radiator 12 in the single-feed mode.

[0127] See also Fig.11 , Fig.11 The first embodiment provides the efficiency curves of the first radiator 11 and the second radiator 12 in the single-feed mode and the dual-feed mode, with the phase of the first radiator 11 being 90° and the phase of the second radiator 12 being 0°, and both operating in the B28 frequency band. At this time, the first radiator 11 and the second radiator 12 form a quasi-binary asymmetric array in the dual-feed mode.

[0128] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phase of the first radiator 11 being 90° and the phase of the second radiator 12 being 0°.

[0129] Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the first radiator 11 having a phase of 90° and the second radiator 12 having a phase of 0°.

[0130] As can be seen from the figure, in the dual-feed mode, the phase of the first radiator 11 is 90° and the phase of the second radiator 12 is 0°. The efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band is improved to a certain extent compared with the efficiency of the first radiator 11 in the single-feed mode, and is similar to the efficiency of the second radiator 12 in the single-feed mode.

[0131] See also Fig.12 , Fig.12 The efficiency curves of the first radiator 11 and the second radiator 12 provided in the first embodiment in the single-feed mode and the dual-feed mode, the phase of the first radiator 11 is 180°, the phase of the second radiator 12 is 0°, and both operate in the B28 frequency band.

[0132] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phase of the first radiator 11 being 180° and the phase of the second radiator 12 being 0°.

[0133] Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the first radiator 11 having a phase of 180° and the second radiator 12 having a phase of 0°.

[0134] As can be seen from the figure, in the dual-feed mode, the phase of the first radiator 11 is 180° and the phase of the second radiator 12 is 0°. The efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band is lower than the efficiency of the second radiator 12 in the single-feed mode, and is similar to the efficiency of the first radiator 11 in the single-feed mode.

[0135] See also Fig.13 , Fig.13 It is the efficiency curve of the first radiator 11 and the second radiator 12 provided in the first embodiment in the dual-feed mode, in the same phase (0°, 90°, 180°) and both working in the B28 frequency band.

[0136] Curve a1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode and 0° co-phase working in the B28 frequency band. Curve b1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode and 90° co-phase working in the B28 frequency band. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode and 180° co-phase working in the B28 frequency band.

[0137] Curve a2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode and working in the B28 frequency band at 0° co-phase. Curve b2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode and working in the B28 frequency band at 90° co-phase. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode and working in the B28 frequency band at 180° co-phase.

[0138] As can be seen from the figure, the first radiator 11 and the second radiator 12 have the same efficiency in the B28 frequency band at 0° in phase, the same efficiency in the B28 frequency band at 90° in phase, and the same efficiency in the B28 frequency band at 180° in phase in the dual-feed mode. This indicates that the total efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode is related to the phase difference between the first radiator 11 and the second radiator 12, and has nothing to do with the absolute phase of the first radiator 11 and the second radiator 12.

[0139] See also Fig.14 , Fig.14 It is the efficiency curve of the first radiator 11 and the second radiator 12 provided in the first embodiment in the dual-feed mode with a phase difference of 180° and both working in the B28 frequency band.

[0140] Curve a1 is the radiation efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 0°, and the phase of the second radiator is 180°, operating in the B28 frequency band. Curve b1 is the radiation efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 180°, and the phase of the second radiator is 0°, operating in the B28 frequency band. Curve a2 is the total efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 0°, and the phase of the second radiator is 180°, operating in the B28 frequency band. Curve b2 is the total efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 180°, and the phase of the second radiator is 0°, operating in the B28 frequency band.

[0141] As can be seen from the figure, the efficiency of the first radiator 11 and the second radiator 12 in the double-feed mode with the phase of the first radiator 11 being 0° and the phase of the second radiator 12 being 180° working in the B28 frequency band is the same as the efficiency of the first radiator 11 and the second radiator 12 in the double-feed mode with the phase of the first radiator 11 being 180° and the phase of the second radiator 12 being 0° working in the B28 frequency band. Since one phase cycle is 360 degrees, there is no distinction between positive and negative phase differences of 180 degrees, and the efficiencies of the two are the same.

[0142] See also Fig.15 , Fig.15 It is the efficiency curve of the first radiator 11 and the second radiator 12 provided in the first embodiment in the dual-feed mode with a phase difference of 90° and both working in the B28 frequency band.

[0143] Curve a1 is the radiation efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 0°, and the phase of the second radiator is 90° working in the B28 frequency band. Curve b1 is the radiation efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 90°, and the phase of the second radiator is 0° working in the B28 frequency band.

[0144] Curve a2 is the total efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 0°, the phase of the second radiator is 90°, and the total efficiency curve of the first radiator and the second radiator in the double-feed mode, the phase of the first radiator is 90°, and the phase of the second radiator is ... B28 frequency band.

[0145] The phase of the first radiator 11 is 0° and the phase of the second radiator 12 is 90°, which is called the phase of the first radiator 11 lags behind the phase of the second radiator 12 by 90°. The phase of the first radiator 11 is 90° and the phase of the second radiator 12 is 0°, which is called the phase of the first radiator 11 leads the phase of the second radiator 12 by 90°.

[0146] As can be seen from the figure, the efficiency of the first radiator 11 lagging behind the second radiator 12 by 90° is different from the efficiency of the first radiator 11 leading the second radiator 12 by 90°, which shows that the absolute phases of the first radiator 11 and the second radiator 12 are distinguished by leading and lagging. Among them, the efficiency of the first radiator 11 leading the second radiator 12 by 90° is greater than the efficiency of the first radiator 11 lagging behind the second radiator 12 by 90°.

[0147] Please refer to Table 1-2, which shows the efficiencies of the first radiator 11 in the single-feed mode, the second radiator 12 in the single-feed mode, the first radiator 11 and the second radiator 12 in the double-feed mode with the same phase, the first radiator 11 and the second radiator 12 in the double-feed mode with the first radiator 11 leading by 90°, the first radiator 11 and the second radiator 12 in the double-feed mode with the first radiator 11 leading by 180°, and the first radiator 11 and the second radiator 12 in the double-feed mode with the first radiator 11 leading by 270° (lagging by 90°). As the phase difference between the first radiator 11 and the second radiator 12 gradually increases, the efficiencies of the first radiator 11 and the second radiator 12 in the double-feed mode first increase and then decrease. Among them, the efficiency of the first radiator 11 and the second radiator 12 in the double-feed mode with the same phase, the efficiency of the first radiator 11 and the second radiator 12 in the double-feed mode with the first radiator 11 leading by 90° are both greater than the efficiency of the first radiator 11 in the single-feed mode and the efficiency of the second radiator 12 in the single-feed mode. Among them, LB-1 in the table refers to the first radiator 11, and LB-2 in the table refers to the second radiator 12, which will not be explained one by one later.

[0148] Table 1-2

[0149]

[0150] See also Fig.16 , Fig.16 This is the basic characteristic diagram of the phased array antenna. When the phase difference between each array element is set to 0°, the gain of the phased array antenna is the largest. When the phased array antenna is scanning at a large angle, there is a phase difference between each array element. Among them, the reference grounds between each array element of the phased array antenna are independent of each other, and the gain is the largest when the phase difference is 0. Each array element of the phased array antenna is a mirror-symmetrical structure.

[0151] In the dual-feed mode antenna formed by the first radiator 11 and the second radiator 12 provided in this embodiment, the reference floor 500 of the first radiator 11 and the reference floor 500 of the second radiator 12 are the same reference floor 500 and are not independent of each other, and the first radiator 11 and the second radiator 12 are not mirror-symmetrical structures. The dual-feed mode antenna formed by the first radiator 11 and the second radiator 12 is different from the traditional phased array antenna, so it is difficult for the dual-feed mode antenna formed by the first radiator 11 and the second radiator 12 to have the maximum gain when the phase difference is 0° like the phased array antenna. That is, the gain of the quasi-binary asymmetric array antenna formed by the first radiator 11 and the second radiator 12 in the dual-feed mode provided in this embodiment is not the maximum gain when the phase difference is 0°.

[0152] According to the gain formula: Gain = Efficiency × Directivity Coefficient, when the gain is maximum, the efficiency and directivity coefficient are often also maximum. Therefore, the efficiency of the quasi-binary asymmetric array antenna formed by the first radiator 11 and the second radiator 12 in the dual-feed mode provided in this embodiment is not the maximum efficiency when the phase difference is 0°.

[0153] From another perspective, the quasi-binary asymmetric array antenna formed by the first radiator 11 and the second radiator 12 provided in this embodiment, the reference floor 500 of the first radiator 11 and the reference floor 500 of the second radiator 12 are the same reference floor 500 and are not independent of each other, and the first radiator 11 and the second radiator 12 are not mirror-symmetrical structures. In order to realize that the quasi-binary asymmetric array antenna has the radiation characteristics of an array antenna, it can be equivalent to that the quasi-binary asymmetric array antenna has an unknown equivalent initial phase difference, and the first radiator 11 and the second radiator 12 are provided with an excitation signal of the first target phase difference through the signal source 30 to offset the influence of the above-mentioned unknown equivalent initial phase difference, so as to achieve the effect of the maximum gain of the array antenna when the phase difference is 0°. That is, the quasi-binary asymmetric array antenna has the maximum gain after the signal source 30 provides the first radiator 11 and the second radiator 12 with an excitation signal of the first target phase difference.

[0154] The present application proposes that when the optimal phase difference (i.e., the optimal first target phase difference) of a quasi-binary asymmetric array antenna is reached, the efficiency and directivity coefficient are the largest at the optimal phase difference, and as the distance from the optimal phase difference increases, the efficiency and directivity coefficient both tend to decrease.

[0155] Referring to Table 1-2 again, the efficiency is -5.5dB when the first radiator 11 and the second radiator 12 are in phase, that is, the phases are both 0° (that is, the scanning angle is 0°). The efficiency is -5.1dB when the phase of the first radiator 11 leads 90° (that is, the scanning angle is 90°). As it moves away from 0°-90°, the efficiency of the quasi-binary asymmetric array antenna gradually decreases, so the optimal phase difference of the quasi-binary asymmetric array antenna is within 0°-90° (that is, the scanning angle is 0°-90°).

[0156] In this embodiment, the method for determining the optimal phase difference includes but is not limited to that the controller 700 of the electronic device 1000 determines the optimal phase difference interval by traversing and testing the root, for example, first comparing the efficiency when the phase difference between the first radiator 11 and the second radiator 12 is 0°, 90°, 180°, and 270°, for example, the optimal phase difference interval in this embodiment is 0°-90°. Then, the efficiency is traversed and calculated at intervals of 1°, 2°, 5°, or 10° (or other values) in the optimal phase difference region, and finally the optimal phase difference is obtained.

[0157] Please refer to Table 1-3, which shows the efficiency when the phase of the first radiator 11 leads the phase of the second radiator 12 by 70° (i.e., the scanning angle is 70°) and the phase of the first radiator 11 leads the phase of the second radiator 12 by 50° (i.e., the scanning angle is 50°).

[0158] Table 1-3

[0159]

[0160]

[0161] It can be seen from Tables 1-3 that the efficiency when the phase of the first radiator 11 leads the phase of the second radiator 12 by 50° is slightly improved compared to the efficiency when the phase of the first radiator 11 leads the phase of the second radiator 12 by 70°. It can be determined that the optimal phase difference between the first radiator 11 and the second radiator 12 is around 50°. This is not an exhaustive list, and a more precise optimal phase difference can be obtained by continuing to increase the interval by 5°, 2°, 1°...

[0162] See also Figure 17a-17g , Fig.17a It is the 3D radiation pattern of the radiator 10 operating in the B28 frequency band in the single-feed mode. Fig.17b It is a 3D radiation pattern of the first radiator 11 and the second radiator 12 in the dual-feed mode when they are in phase (0°). Fig.17c It is a 3D radiation pattern in which the first radiator 11 and the second radiator 12 are in a dual-feed mode and the phase of the first radiator 11 leads by 50°. Fig.17dIt is a 3D radiation pattern in which the first radiator 11 and the second radiator 12 are in a dual-feed mode and the phase of the first radiator 11 leads by 70°. Fig.17e It is a 3D radiation pattern in which the first radiator 11 and the second radiator 12 are in a dual-feed mode and the phase of the first radiator 11 leads by 90°. Fig.17f It is a 3D radiation pattern in which the first radiator 11 and the second radiator 12 are in a dual-feed mode and the phase of the first radiator 11 leads by 180°. Figure 17g It is a 3D directional pattern of the first radiator 11 and the second radiator 12 in the dual-feed mode and the phase of the first radiator 11 is 270° ahead. The above directional patterns are all in the B28 frequency band.

[0163] It can be seen from the 3D radiation pattern in the single-feed mode that the radiation energy of the radiator 10 in the single-feed mode is omnidirectional.

[0164] It can be seen from the 3D radiation pattern in the single-feed mode that as the phase difference of the excitation signal between the first radiator 11 and the second radiator 12 gradually increases, the main radiation direction of the quasi-binary asymmetric array antenna formed by the first radiator 11 and the second radiator 12 in the dual-feed mode is significantly deflected, indicating that this type of binary asymmetric array antenna has the characteristic of controlling the deflection of the radiation direction by controlling the phase difference of the excitation signal between the first radiator 11 and the second radiator 12.

[0165] Please refer to Table 1-4, which shows the efficiency and directivity coefficient when the first radiator 11 and the second radiator 12 are in phase in the double-feed mode, the first radiator 11 and the second radiator 12 are in the double-feed mode and the phase of the first radiator 11 is 50° ahead, the first radiator 11 and the second radiator 12 are in the double-feed mode and the phase of the first radiator 11 is 70° ahead, the first radiator 11 and the second radiator 12 are in the double-feed mode and the phase of the first radiator 11 is 90° ahead, the first radiator 11 and the second radiator 12 are in the double-feed mode and the phase of the first radiator 11 is 180° ahead, and the first radiator 11 and the second radiator 12 are in the double-feed mode and the phase of the first radiator 11 is 270° ahead (lagging 90°).

[0166] Table 1-4

[0167]

[0168] It can be seen from Table 1-4 that the efficiency and directivity coefficient of the quasi-binary asymmetric array antenna formed by the first radiator 11 and the second radiator 12 in the dual-feed mode are both maximum when the phase difference is 50°. As the phase difference is away from 50°, the efficiency and directivity coefficient gradually decrease.

[0169] Optionally, the first target phase difference between the first radiator 11 and the second radiator 12 working in the dual-feed mode includes 0°-90°. As can be seen from Tables 1-4, when the first radiator 11 and the second radiator 12 work in the dual-feed mode, the efficiency of the first radiator 11 leading the second radiator 12 in the range of 0°-90° is greater than -7dB (meeting actual use requirements), which has relatively good efficiency and large gain. As the first target phase difference between the first radiator 11 and the second radiator 12 working in the dual-feed mode moves away from 0°-90°, the efficiency and gain of the quasi-binary asymmetric array antenna both decrease.

[0170] See also Figure 18a-18b , Fig.18a It is the 2D radiation pattern of the radiator 10 operating in the B28 frequency band in the single-feed mode. It can be seen that the coverage angle range of the directivity coefficient of the radiator 10 in the single-feed mode greater than 0 dB is above 180°, and the radiation of the radiator 10 in the single-feed mode is omnidirectional.

[0171] Fig.18b This is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna provided in this embodiment when the phase difference is 0°, the phase of the first radiator 11 is 50° ahead, the phase of the first radiator 11 is 70° ahead, the phase of the first radiator 11 is 90° ahead, the phase of the first radiator 11 is 180° ahead, and the phase of the first radiator 11 is 270° ahead. The above directivity diagrams are all in the B28 frequency band.

[0172] Curve a1 is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna at a phase difference of 0°. Curve a2 is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna at a phase leading of 50° at the first radiator 11. Curve a3 is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna at a phase leading of 70° at the first radiator 11. Curve a4 is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna at a phase leading of 90° at the first radiator 11. Curve a5 is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna at a phase leading of 180° at the first radiator 11. Curve a6 is the radiation main lobe directivity diagram of the quasi-binary asymmetric array antenna at a phase leading of 270° at the first radiator 11.

[0173] It can be seen that the radiation main lobe of the quasi-binary asymmetric array antenna has the maximum gain when the phase of the first radiator 11 leads by 50°, similar to the maximum gain of the phased array antenna when the phase difference between each array element is 0°. The 50° phase lead of the first radiator 11 is equivalent to the equivalent initial phase difference of the quasi-binary asymmetric array antenna caused by the non-independence of the reference floor 500 and the asymmetry of the array elements.

[0174] The main lobe direction of the quasi-binary asymmetric array antenna changes with the change of phase difference, which is also in line with the change law of the phased array antenna during angle scanning. In the process of the main lobe direction of the quasi-binary asymmetric array antenna changing with the change of phase difference, the maximum scanning angle range is 3dB when the efficiency difference is 3dB. At this time, the maximum scanning angle range of the quasi-binary asymmetric array antenna is Fig.18b The maximum scanning angle is close to 135°~225°, and the maximum scanning angle is nearly 90°, achieving large-angle scanning. That is, the quasi-binary asymmetric array antenna can not only achieve high gain, but also achieve large-angle scanning, which is in line with the radiation characteristics of the phased array antenna.

[0175] Optional, see Figure 5 and Fig.19 The feeding network 20 further includes a plurality of phase shifters 21. Each of the phase shifters 21 is electrically connected between the signal source 30 and one of the radiators 10.

[0176] Optional, see Fig.19 The antenna assembly 100 further includes a phase control unit 810. The phase control unit 810 is electrically connected to the plurality of phase shifters 21. The phase control unit 810 is used to control the phase difference between the phase shifters 21 electrically connected to the two radiators 10 in the dual-feed mode to be the first target phase difference.

[0177] For details, please refer to Fig.19 The plurality of phase shifters 21 include a first phase shifter 211 and a second phase shifter 212. The first phase shifter 211 is electrically connected between the first radiator 11 and the signal source 30. The second phase shifter 212 is electrically connected between the second radiator 12 and the signal source 30. The phase control unit 810 is electrically connected to the first phase shifter 211 and the second phase shifter 212, and the phase control unit 810 is used to control the difference between the phase of the first phase shifter 211 and the phase of the second phase shifter 212 to be a first target phase difference.

[0178] The first target phase difference in this embodiment is the difference between the phase of the first phase shifter 211 and the phase of the second phase shifter 212. For example, the first target phase difference is 90°, and the phase of the first phase shifter 211 is 90° ahead of the phase of the second phase shifter 212. This embodiment does not limit the specific values ​​of the phase of the first phase shifter 211 and the phase of the second phase shifter 212.

[0179] The controller 700 of the electronic device 1000 determines the first target phase difference according to whether the radiation efficiency of the antenna component 100 is greater than or equal to the second preset efficiency. For example, the controller 700 of the electronic device 1000 determines that the first target phase difference between the first radiator 11 and the second radiator 12 is 0°-90° by traversing the root test method according to whether the radiation efficiency of the antenna component 100 is greater than or equal to the second preset efficiency of -7dB. Further, the optimal phase difference between the first radiator 11 and the second radiator 12 is determined according to the maximum radiation efficiency of the antenna component 100. Optionally, the second preset efficiency is at least greater than the efficiency of the first radiator 11 in the single feed mode or the efficiency of the second radiator 12 in the single feed mode.

[0180] The phase control unit 810 includes but is not limited to being an independent chip, or a control circuit integrated in other chips.

[0181] The following describes a quasi-binary symmetric array antenna in conjunction with the accompanying drawings. Unless otherwise specified, the efficiency of the quasi-binary symmetric array antenna is the efficiency of the electronic device 1000 in a free scenario.

[0182] In an alternative embodiment, see Fig. 20 , the two radiators 10 working in the dual-feed mode are mirror structures. Specifically, the reference ground plane 500 includes a first reference ground edge 510, a second reference ground edge 520, a third reference ground edge 530 and a fourth reference ground edge 540 connected end to end in sequence, the first reference ground edge 510 and the third reference ground edge 530 are horizontal edges, and the second reference ground edge 520 and the fourth reference ground edge 540 are vertical edges.

[0183] See also Fig. 20 , the multiple radiators 10 include a first radiator 11 and a second radiator 12. The first radiators 11 are arranged at intervals along the second reference ground edge 520, and the second radiators 12 are arranged at intervals along the fourth reference ground edge 540. The first radiator 11 and the second radiator 12 are both IFA antenna structures. The first radiator 11 includes a first grounding point A1, a first feeding point B1 and a first free end C1 arranged in sequence. The second radiator 12 includes a second grounding point A2, a second feeding point B2 and a second free end C2 arranged in sequence. The first grounding point A1 and the second grounding point A2 are both electrically connected to the reference ground 500. The first free end C1 is arranged on the side of the first grounding point A1 away from the bottom edge 322, and the second free end C2 is arranged on the side of the second grounding point A2 away from the bottom edge 322.

[0184] See also Fig. 20The first radiator 11 and the second radiator 12 are symmetrically designed about the vertical center axis of the reference floor 500. The first radiator 11 and the second radiator 12 provided in this embodiment are mirror-symmetrical structures, so the first radiator 11 and the second radiator 12 form a quasi-binary array antenna in the dual-feed mode.

[0185] The first radiator 11 and the second radiator 12 are used to support the LB band in the single-feed mode or the dual-feed mode. The first radiator 11 and the second radiator 12 are respectively arranged on the first reference ground edge 510 and the second reference ground edge 520 to stimulate more longitudinal current modes on the reference floor 500, fully stimulate the radiation capacity on the reference floor 500, improve the radiation contribution on the reference floor 500, and improve the radiation efficiency of the LB band.

[0186] See also Fig.21 , Fig.21 1 is an efficiency curve of the first radiator 11 and the second radiator 12 in a mirror-image arrangement in a single-feed mode provided in the second embodiment of the present application.

[0187] Curve a1 is the radiation efficiency of the first radiator 11 in a mirror-image arrangement in the single-feed mode. Curve b1 is the radiation efficiency of the second radiator 12 in a mirror-image arrangement in the single-feed mode. Curve a2 is the total efficiency of the first radiator 11 in a mirror-image arrangement in the single-feed mode. Curve b2 is the total efficiency of the second radiator 12 in a mirror-image arrangement in the single-feed mode.

[0188] Please refer to Table 1-5, which is a comparison of the efficiencies of the first radiator 11 and the second radiator 12 in a mirror-image arrangement in a single-feed mode provided in an embodiment of the present application.

[0189] Table 1-5

[0190]

[0191] It can be seen that the performance of the first radiator 11 in the single feed mode is similar to the performance of the second radiator 12 in the single feed mode, and the efficiency difference is within 0.5dB, which is less than or equal to the first preset efficiency (3dB), facilitating the formation of a quasi-binary array antenna in a dual feed mode.

[0192] See also Fig. 22 , Fig. 22 It is the efficiency curve of the first radiator 11 and the second radiator 12 provided by the second embodiment in the single-feed mode and the dual-feed mode, the phase of the first radiator 11 is 0°, the phase of the second radiator 12 is 0°, and both work in the B28 frequency band.

[0193] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phase of the first radiator 11 being 0° and the phase of the second radiator 12 being 0°.

[0194] Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the first radiator 11 having a phase of 0° and the second radiator 12 having a phase of 0°.

[0195] As can be seen from the figure, in the dual-feed mode, the phase of the first radiator 11 is 0° and the phase of the second radiator 12 is 0°. The efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band is higher than the efficiency of the second radiator 12 in the single-feed mode, and also higher than the efficiency of the first radiator 11 in the single-feed mode.

[0196] See also Fig.23 , Fig.23 The efficiency curves of the first radiator 11 and the second radiator 12 provided in the second embodiment in the single-feed mode and the dual-feed mode, the phase of the first radiator 11 is 90°, the phase of the second radiator 12 is 0°, and both operate in the B28 frequency band.

[0197] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phase of the first radiator 11 being 90° and the phase of the second radiator 12 being 0°.

[0198] Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the first radiator 11 having a phase of 90° and the second radiator 12 having a phase of 0°.

[0199] As can be seen from the figure, in the dual-feed mode, the phase of the first radiator 11 is 90° and the phase of the second radiator 12 is 0°. The efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band is similar to the efficiency of the second radiator 12 in the single-feed mode, which is lower than the efficiency of the first radiator 11 in the single-feed mode.

[0200] See also Fig.24 , Fig.24 The efficiency curves of the first radiator 11 and the second radiator 12 provided in the second embodiment in the single-feed mode and the dual-feed mode, the phase of the first radiator 11 is 180°, the phase of the second radiator 12 is 0°, and both operate in the B28 frequency band.

[0201] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phase of the first radiator 11 being 180° and the phase of the second radiator 12 being 0°.

[0202] Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the first radiator 11 having a phase of 180° and the second radiator 12 having a phase of 0°.

[0203] As can be seen from the figure, in the dual-feed mode, the phase of the first radiator 11 is 180° and the phase of the second radiator 12 is 0°. The efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band is lower than the efficiency of the second radiator 12 in the single-feed mode, and also lower than the efficiency of the first radiator 11 in the single-feed mode.

[0204] See also Fig.25 , Fig.25 The efficiency curves of the first radiator 11 and the second radiator 12 provided in the second embodiment in the single-feed mode and the dual-feed mode, the phase of the first radiator 11 is 270°, the phase of the second radiator 12 is 0°, and both operate in the B28 frequency band.

[0205] Curve a1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c1 is a radiation efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the phase of the first radiator 11 being 270° and the phase of the second radiator 12 being 0°.

[0206] Curve a2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve b2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 operating in the B28 frequency band in the dual-feed mode with the first radiator 11 having a phase of 270° and the second radiator 12 having a phase of 0°.

[0207] As can be seen from the figure, in the dual-feed mode, the phase of the first radiator 11 is 270° and the phase of the second radiator 12 is 0°. The efficiency of the first radiator 11 and the second radiator 12 working in the B28 frequency band is similar to the efficiency of the first radiator 11 in the single-feed mode, and is also higher than the efficiency of the first radiator 11 in the single-feed mode.

[0208] Please refer to Table 1-6, which shows the efficiency and directivity coefficient of the first radiator 11 in single-feed mode, the second radiator 12 in single-feed mode, the first radiator 11 and the second radiator 12 in phase in dual-feed mode, the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 90°, the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 180°, and the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 270° (lagging by 90°). As the phase difference between the first radiator 11 and the second radiator 12 gradually increases, the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode first decreases and then increases. Among them, the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode when they are in phase, and the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode with the phase of the first radiator 11 leading by 270° are both greater than or equal to the efficiency of the first radiator 11 in the single-feed mode and the efficiency of the second radiator 12 in the single-feed mode.

[0209] Table 1-6

[0210]

[0211]

[0212] It can be seen from Table 1-6 that the efficiency and directivity coefficient of the quasi-binary array antenna formed by the first radiator 11 and the second radiator 12 in the dual-feed mode are both maximum when the phase difference is 0°. As the phase difference moves away from 0°, the efficiency and directivity coefficient gradually decrease.

[0213] Optionally, the first target phase difference of the quasi-binary array antenna formed by the first radiator 11 and the second radiator 12 operating in the dual feed mode includes 0°-60°, 300°-360° (i.e., -60°~60°), so that the efficiency of the formed antenna assembly 100 is greater than or equal to the second preset efficiency of -7dB.

[0214] Specifically, the plurality of phase shifters 21 include a first phase shifter 211 and a second phase shifter 212. The first phase shifter 211 is electrically connected between the first radiator 11 and the signal source 30. The second phase shifter 212 is electrically connected between the second radiator 12 and the signal source 30. The phase control unit 810 is electrically connected to the first phase shifter 211 and the second phase shifter 212, and the phase control unit 810 is used to control the difference between the phase of the first phase shifter 211 and the phase of the second phase shifter 212 to be a first target phase difference.

[0215] The first target phase difference includes 0°-60°, 300°-360° (i.e., -60° to 60°), and the phase of the first radiator 11 is 0°-60° ahead of the phase of the second radiator 12. The phase of the first radiator 11 is 0°-60° ahead of the phase of the second radiator 12. The phase of the first radiator 11 lags the phase of the second radiator 12 by 0°-60°.

[0216] The first target phase difference in this embodiment is the difference between the phase of the first phase shifter 211 and the phase of the second phase shifter 212. For example, the first target phase difference is 0°. This embodiment does not limit the specific values ​​of the phase of the first phase shifter 211 and the phase of the second phase shifter 212.

[0217] The controller 700 of the electronic device 1000 determines the first target phase difference according to whether the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency. For example, the controller 700 of the electronic device 1000 determines that the first target phase difference between the first radiator 11 and the second radiator 12 is 0°-60° and 300°-360° according to whether the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency of -7dB by traversing the root test. Further, the optimal phase difference between the first radiator 11 and the second radiator 12 is determined according to the maximum radiation efficiency of the antenna assembly 100.

[0218] Optionally, the first target phase difference between the first radiator 11 and the second radiator 12 when working in the dual-feed mode includes 0°-60°, 300°-360° (i.e., -60° to 60°). As can be seen from Table 1-6, when the first radiator 11 and the second radiator 12 work in the dual-feed mode, the efficiency of the first radiator 11 is greater than -7dB (meeting actual use requirements) when the phase leads the phase of the second radiator 12 by 0°-60° and lags behind the phase of the second radiator 12 by 0°-60°, and has a relatively good efficiency and a large gain. As the first target phase difference between the first radiator 11 and the second radiator 12 when working in the dual-feed mode moves away from 0°-60°, 300°-360° (i.e., -60° to 60°), the efficiency and gain of the quasi-binary array antenna both decrease.

[0219] In the quasi-binary array antenna provided in this embodiment, the first radiator 11 and the second radiator 12 are mirror-symmetrical, so the quasi-binary array antenna formed in the dual-feed mode is closer to the traditional phased array antenna, so the phase difference of the maximum gain of the quasi-binary array antenna provided in this embodiment is also close to the phase difference of the maximum gain of the phased array antenna. The phase difference between each array element at the maximum gain of the traditional phased array antenna is 0°. In the quasi-binary array antenna provided in this embodiment, the first radiator 11 and the second radiator 12 have the maximum gain in the dual-feed mode when the phase difference range is -60° to 60°. For example, in the quasi-binary array antenna provided in this embodiment, the first radiator 11 and the second radiator 12 have the maximum gain when the phase difference range is 0° in the dual-feed mode.

[0220] See also Fig.26 , Fig.26 This is the radiation main lobe directivity diagram of the quasi-binary array antenna provided in the second embodiment of the present application when the phase difference is 0°, the phase of the first radiator 11 is 90° ahead, the phase of the first radiator 11 is 180° ahead, and the phase of the first radiator 11 is 270° ahead. The above directivity diagrams are all in the B28 frequency band.

[0221] Curve a1 is the radiation main lobe directivity diagram of the quasi-binary array antenna at a phase difference of 0°. Curve a2 is the radiation main lobe directivity diagram of the quasi-binary array antenna at a phase difference of 90°. Curve a3 is the radiation main lobe directivity diagram of the quasi-binary array antenna at a phase difference of 180°. Curve a4 is the radiation main lobe directivity diagram of the quasi-binary array antenna at a phase difference of 270°.

[0222] It can be seen that the gain of the main lobe of the quasi-binary array antenna is maximum when the phase of the first radiator 11 leads by 0°. The main lobe of the quasi-binary array antenna changes with the change of the phase difference, which is also in line with the change law of the phased array antenna during angle scanning. In the process of the main lobe of the quasi-binary array antenna changing with the change of the phase difference, the maximum scanning angle range is 3dB difference in efficiency. At this time, the maximum scanning angle range of the quasi-binary array antenna is 90°-270°, and has good directivity coefficient and efficiency, that is, the quasi-binary array antenna has a better large-angle scanning characteristic. The quasi-binary array antenna can not only achieve high gain, but also achieve large-angle scanning, which is in line with the radiation characteristics of the phased array antenna.

[0223] As can be seen from the above, the omnidirectional antenna units whose efficiency difference satisfies the first preset efficiency can be used to form a quasi-array antenna. The above is a quasi-array antenna with two array elements, namely a quasi-binary array antenna and a quasi-binary asymmetric array antenna. The gain of the quasi-binary array antenna and the quasi-binary asymmetric array antenna changes with the change of the phase difference between the two array elements to form a directional antenna with high directivity coefficient, high gain and large scanning angle.

[0224] The above embodiments are described by taking the case where the power between two array elements in a quasi-binary array antenna and a quasi-binary asymmetric array antenna is the same as an example. When the power between the two array elements is different, the radiation performance of the quasi-array antenna will also be affected. For example, when the power of the first radiator 11 is much greater than the power of the second radiator 12, the radiation contribution of the first radiator 11 accounts for a large proportion, and the radiation efficiency of the quasi-array antenna formed is closer to the efficiency of the first radiator 11. When the power of the second radiator 12 is much greater than the power of the first radiator 11, the radiation contribution of the second radiator 12 accounts for a large proportion, and the radiation efficiency of the quasi-array antenna formed is closer to the efficiency of the second radiator 12.

[0225] See also Fig. 27 The feed network 20 further includes a plurality of power dividers. Each of the power dividers is electrically connected between the signal source 30 and one of the phase shifters 21.

[0226] See also Fig. 27 The antenna assembly 100 further includes a power control unit 820. The power control unit 820 is electrically connected to the power divider. The power control unit 820 is used to control the output power ratio between the power dividers electrically connected to the two radiators 10 in the dual-feed mode to be a first target power ratio.

[0227] The efficiency of the two radiators 10 operating in the dual-feed mode at the first target power ratio is greater than or equal to a second preset efficiency. For example, the second preset efficiency is -7 dB. For example, the second preset efficiency is greater than or equal to the efficiency of the first radiator 11 in the single-feed mode, or the efficiency of the second radiator 12 in the single-feed mode.

[0228] For details, please refer to Fig. 27 The multiple power dividers include a first power divider 221 and a second power divider 222. The first power divider 221 is electrically connected between the first radiator 11 and the signal source 30. The second power divider 222 is electrically connected between the second radiator 12 and the signal source 30. The power control unit 820 is electrically connected to the first power divider 221 and the second power divider 222, and the power control unit 820 is used to control the ratio of the power of the first power divider 221 to the power of the second power divider 222 to be a first target power ratio, so that the efficiency of the quasi-array antenna is greater than or equal to the second preset efficiency of -7dB, and has good antenna performance.

[0229] The first target power ratio in this embodiment is the ratio of the power of the first power divider 221 to the power of the second power divider 222. For example, the ratio of the power of the first power divider 221 to the power of the second power divider 222 is 2:1-1:2. Further, the ratio of the power of the first power divider 221 to the power of the second power divider 222 is 1:1. This embodiment does not limit the specific values ​​of the power of the first power divider 221 and the power of the second power divider 222.

[0230] The controller 700 of the electronic device 1000 determines the first target power ratio according to whether the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency. For example, when the phase difference between the first radiator 11 and the second radiator 12 is constant (for example, the first radiator 11 is placed in front of the second radiator 1250° phase), the controller 700 of the electronic device 1000 determines that the power ratio between the first radiator 11 and the second radiator 12 is the first target power ratio by traversing the root test method according to whether the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency of -7dB. Further, the optimal power ratio between the first radiator 11 and the second radiator 12 is determined according to the maximum radiation efficiency of the antenna assembly 100.

[0231] The power control unit 820 includes but is not limited to being an independent chip, or a control circuit integrated in other chips.

[0232] Optionally, if the power ratio of the first radiator 11 and the second radiator 12 in the electronic device 1000 is not adjustable, and the phase difference between the first radiator 11 and the second radiator 12 is adjustable, the controller 700 adjusts the phase difference between the first radiator 11 and the second radiator 12 by controlling the phase control unit 810, and uses the phase difference between the first radiator 11 and the second radiator 12 as a variable, and adopts the traversal test method to obtain the first target power ratio range of the first radiator 11 and the second radiator 12 in the dual-feed mode, so that the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency -7dB, and the antenna assembly 100 has good working efficiency. The optimal first target power ratio can also be determined according to the optimal efficiency value.

[0233] Alternatively, if the power ratio of the first radiator 11 and the second radiator 12 in the electronic device 1000 is adjustable, and the phase difference between the first radiator 11 and the second radiator 12 is adjustable, the controller 700 controls the phase control unit 810 to adjust the phase difference between the first radiator 11 and the second radiator 12, and controls the power control unit 820 to adjust the power ratio between the first radiator 11 and the second radiator 12, and uses the phase difference between the first radiator 11 and the second radiator 12 and the power ratio between the first radiator 11 and the second radiator 12 as double variables, imports numerical calculation tools such as Matlab, establishes a mapping relationship, or uses a traversal test root method to obtain the first target power ratio range and the first target phase difference range of the first radiator 11 and the second radiator 12 in the dual-feed mode, so that the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency -7dB, and the antenna assembly 100 has good working efficiency. The optimal first target phase difference and the optimal first target power ratio can also be determined according to the optimal efficiency value.

[0234] For example, through the above method, it is obtained that the phase of the first radiator 11 is 250° ahead of the phase of the second radiator 12, and when the power ratio between the first radiator 11 and the second radiator 12 is 1.7:1, the radiation efficiency of the antenna component 100 is greater than or equal to the second preset efficiency -7dB, and the antenna component 100 has good working efficiency.

[0235] Alternatively, if the power ratio of the first radiator 11 and the second radiator 12 in the electronic device 1000 is adjustable, and the phase difference between the first radiator 11 and the second radiator 12 is not adjustable, the controller 700 adjusts the power ratio between the first radiator 11 and the second radiator 12 by controlling the power control unit 820, and uses the power ratio between the first radiator 11 and the second radiator 12 as a double variable, imports numerical calculation tools such as Matlab, establishes a mapping relationship, or uses a traversal test root method to obtain the first target power ratio range of the first radiator 11 and the second radiator 12 in the dual-feed mode, so that the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency -7dB, and the antenna assembly 100 has a good working efficiency. The optimal first target phase difference and the optimal first target power ratio can also be determined according to the optimal efficiency value.

[0236] The efficiency described in the above embodiment is the efficiency of the electronic device 1000 in a free scene. When the electronic device 1000 is a mobile phone, the common scene of the electronic device 1000 is a handheld scene. The following describes the efficiency of the quasi-array antenna in the handheld scene with the phase of the first radiator 11, the phase of the second radiator 12, and the phase difference between the first radiator 11 and the second radiator 12.

[0237] See also Fig.28 , Fig.28 The first embodiment provides the efficiency of the first radiator 11 in the single-feed mode and the second radiator 12 in the single-feed mode in the left-hand holding scenario. In the first embodiment, the first radiator 11 and the second radiator 12 form a quasi-dual asymmetric array antenna.

[0238] Curve a1 is the radiation efficiency curve of the first radiator 11 working in the single-feed mode at the B28 frequency band in the left-hand holding scenario. Curve b1 is the radiation efficiency curve of the second radiator 12 working in the single-feed mode at the B28 frequency band in the left-hand holding scenario.

[0239] Curve a2 is the total efficiency curve of the first radiator 11 operating in the single-feed mode in the B28 frequency band in the left-hand holding scenario. Curve b2 is the total efficiency curve of the second radiator 12 operating in the single-feed mode in the B28 frequency band in the left-hand holding scenario.

[0240] See also Fig.29 , Fig.29 This is the efficiency provided by the first embodiment in the left-hand holding scenario where the phases of the first radiator 11 in the single-feed mode, the second radiator 12 in the single-feed mode, and the first radiator 11 and the second radiator 12 in the dual-feed mode are all 0°.

[0241] Curve a1 is a radiation efficiency curve in which the phases of the first radiator 11 and the second radiator 12 are both 0° in the dual-feed mode in the left-hand holding scenario. Curve b1 is a radiation efficiency curve in which the first radiator 11 operates in the B28 frequency band in the single-feed mode in the left-hand holding scenario. Curve c1 is a radiation efficiency curve in which the second radiator 12 operates in the B28 frequency band in the single-feed mode in the left-hand holding scenario.

[0242] Curve a2 is a total efficiency curve in which the phases of the first radiator 11 and the second radiator 12 are both 0° in the dual-feed mode in the left-hand holding scenario. Curve b2 is a total efficiency curve in which the first radiator 11 operates in the B28 frequency band in the single-feed mode in the left-hand holding scenario. Curve c2 is a total efficiency curve in which the second radiator 12 operates in the B28 frequency band in the single-feed mode in the left-hand holding scenario.

[0243] See also Fig.30 , Fig.30 This is the efficiency provided by the first embodiment in the left-hand holding scenario, in which the first radiator 11 is in single-feed mode, the second radiator 12 is in single-feed mode, and the first radiator 11 is 50° ahead of the second radiator 12 in phase in dual-feed mode.

[0244] Curve a1 is a radiation efficiency curve in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode in the left-hand holding scenario. Curve b1 is a radiation efficiency curve in which the first radiator 11 operates in the B28 frequency band in the single-feed mode in the left-hand holding scenario. Curve c1 is a radiation efficiency curve in which the second radiator 12 operates in the B28 frequency band in the single-feed mode in the left-hand holding scenario.

[0245] Curve a2 is a total efficiency curve in the left-hand holding scenario in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode. Curve b2 is a total efficiency curve in the left-hand holding scenario in which the first radiator 11 operates in the B28 frequency band in the single-feed mode. Curve c2 is a total efficiency curve in the left-hand holding scenario in which the second radiator 12 operates in the B28 frequency band in the single-feed mode.

[0246] Please refer to Table 1-7, which shows the efficiency of the first radiator 11 in single-feed mode, the second radiator 12 in single-feed mode, the first radiator 11 and the second radiator 12 in dual-feed mode with the same phase, and the first radiator 11 and the second radiator 12 in dual-feed mode with the phase of the first radiator 11 leading by 50° when held in the left hand.

[0247] It can be seen that compared with the free scene, the efficiency of the quasi-binary asymmetric array antenna in the left-hand holding scene at a phase difference of 0° or 50° is between the efficiency of the first radiator 11 in the single feed mode and the efficiency of the second radiator 12 in the single feed mode. The optimal phase difference in the left-hand holding scene is different from the optimal phase difference in the free scene. Among them, although the efficiency of the quasi-binary asymmetric array antenna in the left-hand holding scene at a phase difference of 0° is lower than the efficiency of the second radiator 12 in the single feed mode, it is higher than the efficiency of the first radiator 11 in the single feed mode. Therefore, in the left-hand holding scene, taking the second preset efficiency of -10dB as an example, the first target phase difference range includes 0°.

[0248] Table 1-7

[0249]

[0250] The relationship between the efficiency and the power ratio between the elements of the quasi-binary asymmetric array antenna (ie, the element amplitude coefficient) in the left-hand holding scenario is described below. The phase of the first radiator 11 leads the phase of the second radiator 12 by 50°.

[0251] See also Fig.31 , Fig.31 The first embodiment provides an efficiency in which, in a left-handed holding scenario, the second radiator 12 is 50° ahead of the second radiator 12 in phase in single-feed mode and in dual-feed mode, and the power ratios are 1:1, 1:2, and 1:100, respectively.

[0252] Curve a1 is a radiation efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:2. Curve b1 is a radiation efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:100. Curve c1 is a radiation efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:1. Curve d1 is a radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the left-hand holding scenario in the single-feed mode.

[0253] Curve a2 is a total efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:2. Curve b2 is a total efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:100. Curve c2 is a total efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:1. Curve d2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode in the left-hand holding scenario.

[0254] See also Fig.32 , Fig.32 The first embodiment provides efficiencies in which, in a left-handed holding scenario, the second radiator 12 is 50° ahead of the second radiator 12 in phase in single-feed mode and in dual-feed mode, and the power ratios are 1:1, 2:1, and 100:1, respectively.

[0255] Curve a1 is a radiation efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 2:1. Curve b1 is a radiation efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 100:1. Curve c1 is a radiation efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:1. Curve d1 is a radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode in the left-hand holding scenario.

[0256] Curve a2 is a total efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 2:1. Curve b2 is a total efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 100:1. Curve c2 is a total efficiency curve in the left-hand holding scenario, in which the first radiator 11 leads the second radiator 12 by 50° in phase in the dual-feed mode and the power ratio is 1:1. Curve d2 is a total efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode in the left-hand holding scenario.

[0257] By comparison, it can be seen that the power multiple does not change the absolute value of the antenna's radiation capability, because the antenna's radiation efficiency = output power / input power. Even if the input energy is increased by 100 times, the output energy will also increase by 100 times, so there is no huge change. In addition, it can be further found that the weight coefficient (i.e., power ratio) makes the antenna performance in the dual-feed mode more "like" that of a single antenna. For example, when the second radiator 12 is excited with one hundred times the energy of the first radiator 11, the hand-held performance is very close to the performance of the second radiator 12 alone (i.e., the single-feed mode of the second radiator 12), and when the first radiator 11 is excited with one hundred times the energy of the second radiator 12, the hand-held performance is very close to the performance of the first radiator 11 alone (i.e., the single-feed mode of the first radiator 11).

[0258] See also Fig.33 , Fig.33 This is the efficiency comparison of the first radiator 11 in the single-feed mode with the initial phases of 0°, 50°, and 288° in the left-hand holding scenario provided by the first embodiment.

[0259] Curve a1 is a radiation efficiency curve of the first radiator 11 in the single-feed mode with an initial phase of 50° in the dual-feed mode in the left-hand holding scenario. Curve b1 is a radiation efficiency curve of the first radiator 11 in the single-feed mode with an initial phase of 288° in the dual-feed mode in the left-hand holding scenario. Curve c1 is a radiation efficiency curve of the first radiator 11 in the single-feed mode with an initial phase of 0° in the dual-feed mode in the left-hand holding scenario.

[0260] Curve a2 is a total efficiency curve in the left-hand holding scenario in the dual-feed mode with the initial phase of the first radiator 11 in the single-feed mode being 50°. Curve b2 is a total efficiency curve in the left-hand holding scenario in the dual-feed mode with the initial phase of the first radiator 11 in the single-feed mode being 288°. Curve c2 is a total efficiency curve in the left-hand holding scenario in the dual-feed mode with the initial phase of the first radiator 11 in the single-feed mode being 0°.

[0261] It can be seen from the above that the initial phase in the single-feed mode will not affect the antenna radiation capability. Therefore, when the initial phase of the first radiator 11 in the single-feed mode is 0°, 50°, and 288°, the radiation efficiency and total efficiency of the antenna are the same.

[0262] Please refer to Table 1-8, which shows the efficiencies of the first embodiment in the left-handed hand-held scenario, in which the first radiator 11 is in single-feed mode, the second radiator 12 is in single-feed mode, and in dual-feed mode, in which the phase of the first radiator 11 is 50° ahead of the second radiator 12, and the power ratios are 1:1, 1:2, 1:100, 2:1, and 100:1, respectively.

[0263] Table 1-8

[0264]

[0265] See also Fig.34 , Fig.34 This is the efficiency curve of the electronic device 1000 provided by the first embodiment in the left-hand holding scenario, in which the phases of the first radiator 11 and the second radiator 12 in the single-feed mode and the dual-feed mode are respectively (0°, 0°), (90°, 0°), (180°, 0°), and (270°, 0°), and both operate in the B28 frequency band.

[0266] Curve a1 is the phase of the first radiator 11 and the second radiator 12 in the dual-feed mode, where the phase of the first radiator 11 is 0° and the phase of the second radiator 12 is 0°. Curve b1 is the phase of the first radiator 11 and the second radiator 12 in the dual-feed mode, where the phase of the first radiator 11 is 90° and the phase of the second radiator 12 is 0°. Curve c1 is the phase of the first radiator 11 and the second radiator 12 in the dual-feed mode, where the phase of the first radiator 11 is 180° and the phase of the second radiator 12 is 0°. Curve d1 is the phase of the first radiator 11 and the second radiator 12 in the dual-feed mode, where the phase of the first radiator 11 is 270° and the phase of the second radiator 12 is 0°. Curve e1 is the radiation efficiency curve of the first radiator 11 operating in the B28 frequency band in the single-feed mode. Curve f1 is the radiation efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode.

[0267] Curve a2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode with the phase of the first radiator 11 being 0° and the phase of the second radiator 12 being 0° working in the B28 frequency band. Curve b2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode with the phase of the first radiator 11 being 90° and the phase of the second radiator 12 being 0° working in the B28 frequency band. Curve c2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode with the phase of the first radiator 11 being 280° and the phase of the second radiator 12 being 0° working in the B28 frequency band. Curve d2 is a total efficiency curve of the first radiator 11 and the second radiator 12 in the dual-feed mode with the phase of the first radiator 11 being 270° and the phase of the second radiator 12 being 0°. Curve e2 is a total efficiency curve of the first radiator 11 in the single-feed mode working in the B28 frequency band. Curve f2 is a total efficiency curve of the second radiator 12 operating in the B28 frequency band in the single-feed mode.

[0268] Please refer to Table 1-9, which shows the efficiency and directivity coefficient of the first radiator 11 in single-feed mode, the second radiator 12 in single-feed mode, the first radiator 11 and the second radiator 12 in phase in dual-feed mode, the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 90°, the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 180°, and the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 270° (lagging by 90°). As the phase difference between the first radiator 11 and the second radiator 12 gradually increases, the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode first decreases and then increases. Among them, the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode when they are in phase, and the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode with the phase of the first radiator 11 leading by 270° are both greater than or equal to the efficiency of the first radiator 11 in the single-feed mode and the efficiency of the second radiator 12 in the single-feed mode.

[0269] When the phase of the first radiator 11 leads the phase of the second radiator 12 by 180°-360°, the efficiency of the first radiator 11 and the second radiator 12 in the dual-feed mode is higher than the efficiency of the first radiator 11 in the single-feed mode. In the left-hand holding scenario, the second preset efficiency is -10dB, and the first target phase difference range includes 180°-360°.

[0270] Table 1-9

[0271]

[0272] As can be seen from the figure, the phase of the first radiator 11 leads the phase of the second radiator 12 in the dual-feed mode, and the efficiency increases first, then decreases, and then increases from 50°-90°-180°-270°-360°. It can be seen that, unlike the electronic device 1000 in the free scene, the efficiency is higher when the phase difference between the first radiator 11 and the second radiator 12 is 50°. In the left-hand holding scene, the efficiency of the electronic device 1000 is higher when the phase difference between the first radiator 11 and the second radiator 12 is 270°.

[0273] From another perspective, compared to the free scene, the electronic device 1000 after being held by the hand changes the directional pattern of the antenna assembly 100, and the phase matching of the quasi-binary array antenna will reach a consensus at other phase differences, so the first target phase difference in the left hand holding scene is different from the first target phase difference in the free scene. In other words, treating the hand and the antenna as one is equivalent to forming a new antenna, and the binary array antenna forms a new directional pattern, so the optimal phase difference between the first radiator 11 and the second radiator 12 will also change accordingly.

[0274] Correspondingly, the first target phase difference of the electronic device 1000 in the right-hand holding scenario is also different from the first target phase difference of the electronic device 1000 in the free scenario.

[0275] Due to the asymmetry between the left and right hands, the first target phase difference of the electronic device 1000 in the left-hand holding scenario is different from the first target phase difference in the right-hand holding scenario.

[0276] Please refer to Table 1-10, which shows the efficiency of the first radiator 11 in single-feed mode, the second radiator 12 in single-feed mode, the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 25°, the first radiator 11 and the second radiator 12 in dual-feed mode with the first radiator 11 leading by 50°, the first radiator 11 and the second radiator 12 in dual-feed mode with the phase of the first radiator 11 leading by 90°, the first radiator 11 and the second radiator 12 in dual-feed mode with the phase of the first radiator 11 leading by 180°, the first radiator 11 and the second radiator 12 in dual-feed mode with the phase of the first radiator 11 leading by 270°, and the first radiator 11 and the second radiator 12 in dual-feed mode with the phase of the first radiator 11 leading by 360° in the B28 frequency band in the left-hand holding scenario and in the right-hand holding scenario.

[0277] As can be seen from the table, the phase of the first radiator 11 leads the phase of the second radiator 12 in the double-feed mode, and the efficiency first decreases and then increases from 25°-50°-90°-180°-270°-360°. It can be seen that, unlike the electronic device 1000 in the free scene, the efficiency is higher when the phase difference between the first radiator 11 and the second radiator 12 is 50°. In the left-hand holding scene, the efficiency is higher when the phase difference between the first radiator 11 and the second radiator 12 is 0°-90° (especially 25°).

[0278] Table 1-10

[0279]

[0280] From the above, it can be seen that the optimal phase difference of the quasi-array antenna provided by the present application in the left-hand holding scenario is that the first radiator 11 leads by 270°, and the optimal phase difference of the quasi-array antenna in the right-hand holding scenario is that the first radiator 11 leads by 25°. Compared with the free scenario, the directional pattern of the quasi-array antenna changes after being held by the hand. Therefore, the optimal phase difference of the quasi-array antenna in the left-hand holding scenario is different from the optimal phase difference of the quasi-array antenna in the free scenario. The optimal phase difference of the quasi-array antenna in the right-hand holding scenario is different from the optimal phase difference of the quasi-array antenna in the free scenario. Since the left-hand holding electronic device 1000 and the right-hand holding electronic device 1000 have different effects on the directional pattern of the quasi-array antenna, the optimal phase difference of the quasi-array antenna in the left-hand holding scenario is different from the optimal phase difference of the quasi-array antenna in the right-hand holding scenario.

[0281] Optionally, the first target phase difference is an initial phase difference of the electronic device 1000 in the dual-feed mode in a free scenario.

[0282] The phase control unit 810 is also used to control the phase difference between the phase shifters 21 electrically connected to the two radiators 10 in the dual-feed mode to be a second target phase difference when the electronic device 1000 is in a hand-held scenario, and the efficiency of the two radiators 10 operating in the dual-feed mode at the second target phase difference is greater than or equal to a second preset efficiency. For example, the second preset efficiency is -10dB.

[0283] Optionally, the second target phase difference between the first radiator 11 and the second radiator 12 working in the dual-feed mode in the left-hand holding scenario includes 180°-360°, so that the efficiency of the two radiators 10 working in the dual-feed mode at the second target phase difference is greater than or equal to a second preset efficiency. For example, the second preset efficiency is -10dB.

[0284] The second target phase difference between the first radiator 11 and the second radiator 12 working in the dual-feed mode in the right-hand holding scenario includes 0°-90°, so that the efficiency of the two radiators 10 working in the dual-feed mode at the second target phase difference is greater than or equal to a second preset efficiency. For example, the second preset efficiency is -7.5dB.

[0285] Optionally, the first target power ratio value is an initial power ratio value of the electronic device 1000 in the dual-feed mode in a free scenario.

[0286] The phase control unit 810 is also used to control the output power ratio of the power divider 22 electrically connected to the two radiators 10 in the dual-feed mode to be a second target power ratio when the electronic device 1000 is in a hand-held scenario, and the efficiency of the two radiators 10 operating in the dual-feed mode at the second target phase difference and / or the second target power ratio is greater than or equal to a third preset efficiency. For example, the third preset efficiency is -10dB. Optionally, the third preset efficiency is greater than the efficiency of the first radiator 11 in the single-feed mode or the efficiency of the second radiator 12 in the single-feed mode.

[0287] The electronic device 1000 is in a hand-held scenario detection mode, for example, by detecting whether it is held by a hand through a detection device such as a proximity sensor.

[0288] Optionally, the first target phase difference is set as the initial phase difference, and the first target power ratio is set as the initial power ratio. When the efficiency of the first radiator 11 in the single-feed mode, the efficiency of the second radiator 12 in the single-feed mode, and the efficiency of the first radiator 11 and the second radiator 12 at the first target phase difference and the first target power ratio are all less than the second preset efficiency, the second target phase difference and / or the second target power ratio greater than or equal to the second preset efficiency can be obtained by changing the phase difference and / or the power ratio; or, the second target phase difference and / or the second target power ratio at the optimal efficiency is determined, and the antenna assembly 100 is operated according to the second target phase difference and / or the second target power ratio.

[0289] Optionally, when the electronic device 1000 is in a free scene, the first target phase difference is set as the initial phase difference, and the first target power ratio is set as the initial power ratio. When the electronic device 1000 is in a handheld scene, the second target phase difference and / or the second target power ratio greater than or equal to the second preset efficiency can be obtained by changing the phase difference and / or the power ratio; or the second target phase difference and / or the second target power ratio at the best efficiency is determined, and the antenna assembly 100 operates according to the second target phase difference and / or the second target power ratio.

[0290] In the embodiment of the present application, the weight coefficient (power ratio) and phase difference of the first radiator 11 and the second radiator 12 are imported as double variables into numerical calculation tools such as Matlab, and a corresponding relationship between the double variables is established, or a traversal test root method is adopted to obtain a performance optimal solution range or an optimal solution under the dual-feed mode. For example, when the first radiator 11 is fed with 1.7 times the energy of the second radiator 12, and the phase of the first radiator 11 is 250° ahead, the performance is optimal at this time.

[0291] The embodiment of the present application analyzes the holding performance of the quasi-binary asymmetric array antenna and the dual-variable efficiency optimal traversal method of the power ratio and phase difference based on the free scene performance of the quasi-binary asymmetric array antenna, analyzes the changes and causes of the hand-held scene and the free scene, analyzes the weight coefficient (power ratio) of the array element and the phase difference of the array element respectively, and obtains the optimal solution range or the optimal solution of the holding performance of the quasi-binary asymmetric array antenna through dual-variable traversal root trial.

[0292] In the present application, the asymmetric forms of the first radiator 11 and the second radiator 12 can be various.

[0293] Through the inventive concept of the present application, a quasi-binary asymmetric array antenna or a quasi-binary symmetric array antenna can be constructed, and the optimal solution range or optimal solution of the holding performance of the quasi-binary asymmetric array antenna or the quasi-binary symmetric array antenna can be obtained through a dual variable traversal root trial method.

[0294] When the RF board level is fixed, resulting in a fixed input energy power, the phase difference between the array elements is subjected to a single variable traversal test to obtain the optimal phase difference range or the optimum phase difference in the left-hand holding / right-hand holding scenarios, respectively. The initial phase difference of the dual array elements is flexibly adjusted through the phase shifter 21 to obtain good handheld performance.

[0295] See also Fig.35 , the at least two radiators 10 further include a third radiator 13 and a fourth radiator 14. The feeding network 20 is also electrically connected to the third radiator 13 and the fourth radiator 14. The switch switching unit 40 is used to determine that any two target radiators 10 among the first radiator 11, the second radiator 12, the third radiator 13 and the fourth radiator 14 work in the dual-feed mode. The difference in working efficiency of the two target radiators 10 in the single-feed mode is the minimum value of the difference in working efficiency of any two radiators 10 among the first radiator 11, the second radiator 12, the third radiator 13 and the fourth radiator 14 in the single-feed mode.

[0296] Specifically, the first radiators 11 are arranged at intervals along the second reference ground edge 520. A portion of the second radiator 12 is arranged at intervals along the third reference ground edge 530. Another portion of the second radiator 12 is arranged at intervals along the fourth reference ground edge 540. The third radiator 13 is arranged at intervals along the second reference ground edge 520 and is located between the first radiator 11 and the second radiator 12. The fourth radiator 14 is arranged at intervals along the fourth reference ground edge 540.

[0297] One end of the switch unit is electrically connected to the signal source 30, and the switch unit is also electrically connected to the first radiator 11, the second radiator 12, the third radiator 13, and the fourth radiator 14. The switch unit can select any one of the first radiator 11, the second radiator 12, the third radiator 13, and the fourth radiator 14 to turn on the signal source 30, and can also select any two of the first radiator 11, the second radiator 12, the third radiator 13, and the fourth radiator 14 to turn on the signal source 30.

[0298] The electronic device 1000 further includes a controller 700. The controller 700 is electrically connected to the switch unit 40. The controller 700 is used to control the multiple radiators 10 to all work in the single-feed mode or two target radiators 10 in the multiple radiators 10 to work in the dual-feed mode according to the signal strength of the multiple radiators 10 in the single-feed mode and the dual-feed mode.

[0299] Optionally, the controller 700 controls the switch unit to turn on the signal source 30 in any one of the first radiator 11, the second radiator 12, the third radiator 13, and the fourth radiator 14, and obtains the efficiency of the first radiator 11, the second radiator 12, the third radiator 13, and the fourth radiator 14 in the single feed mode. If the efficiency of a single radiator 10 in the single feed mode is less than or equal to the second preset efficiency, for example -7dB. The controller 700 determines that the two radiators 10 with the smallest efficiency difference operate in the dual feed mode and form a quasi-binary array antenna. The controller 700 controls the phase control unit 810 and / or the power control unit 820 to determine the first target phase difference and the first target power ratio between the first radiator 11 and the second radiator 12, so that the radiation efficiency of the antenna assembly 100 is greater than or equal to the second preset efficiency -7dB, and the antenna assembly 100 has good working efficiency. The radiation performance of the first radiator 11 and the second radiator 12 at the first target phase difference and the first target power ratio is equivalent to the radiation performance of the phased array antenna, and has a larger directivity coefficient, a larger gain and a larger scanning angle range.

[0300] The quasi-binary symmetric / asymmetric array antenna provided in the embodiment of the present application, by feeding with a suitable phase difference and / or power ratio, demonstrates and analyzes that the quasi-binary symmetric / asymmetric array antenna has phased array characteristics under a suitable phase difference and / or power ratio, and has a large-angle scanning characteristic while maintaining a stable efficiency change.

[0301] 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: It includes a reference floor and an antenna assembly, wherein the antenna assembly includes: at least two radiators, each of which is electrically connected to the reference ground; A feeding network, the feeding network electrically connecting each of the radiators; a signal source, the signal source being electrically connected to the feed network and configured to provide an excitation signal; and A switch switching unit, the switch switching unit is electrically connected between the signal source and the feeding network, the switch switching unit is used to switch the working mode of the radiator to a single-feed mode or a dual-feed mode, the single-feed mode is a mode in which the signal source supports the operation of one radiator alone, and the dual-feed mode is a mode in which the signal source supports the operation of two radiators simultaneously through the feeding network; the difference in efficiency of the two radiators that are switched to be simultaneously connected to the signal source in the same frequency band in the single-feed mode is less than or equal to a first preset efficiency, the phase difference between the two radiators in the dual-feed mode is a first target phase difference, and the directivity coefficients of the two radiators in the dual-feed mode are greater than the directivity coefficients of the radiators in the single-feed mode.

2. The electronic device according to claim 1, wherein: The feeding network comprises a plurality of phase shifters, each of the phase shifters being electrically connected between the signal source and one of the radiators; The antenna assembly also includes a phase control unit, which is electrically connected to a plurality of the phase shifters. The phase control unit is used to control the phase difference between the phase shifters electrically connected to the two radiators in the dual feed mode to be the first target phase difference based on the efficiency of the two radiators in the dual feed mode being greater than or equal to a second preset efficiency.

3. The electronic device according to claim 2, characterized in that: The first target phase difference is an initial phase difference of the electronic device in the dual-feed mode in a free scenario; The phase control unit is also used to control the phase difference between the phase shifters electrically connected to the two radiators in the dual feed mode to be a second target phase difference, based on the efficiency of the two radiators in the dual feed mode being greater than or equal to a third preset efficiency, when the electronic device is in a hand-held scenario.

4. The electronic device according to claim 3, characterized in that: The feed network further comprises a plurality of power dividers, each of the power dividers being electrically connected between the signal source and one of the phase shifters; The antenna assembly also includes a power control unit, which is electrically connected to the power divider. The power control unit is used to control the output power ratio between the power dividers electrically connected to the two radiators in the dual feed mode to be a first target power ratio, and the efficiency of the two radiators operating in the dual feed mode at the first target phase difference and the first target power ratio is greater than or equal to the second preset efficiency.

5. The electronic device according to claim 4, characterized in that: The first target power ratio value is an initial power ratio value of the electronic device in the dual-feed mode in a free scenario; The power control unit is also used to control the output power ratio of the power divider electrically connected to the two radiators in the dual feed mode to be a second target power ratio when the electronic device is in a hand-held scenario, and the efficiency of the two radiators operating in the dual feed mode at the second target phase difference and the second target power ratio is greater than or equal to a third preset efficiency.

6. The electronic device according to claim 1, wherein: The two radiators in the dual-feed mode form a target resonance mode supporting the target frequency band, the directivity coefficient of the radiation pattern of the target resonance mode is greater than 2dBi, and the maximum scanning angle of the radiation pattern of the target resonance mode is greater than or equal to 90°; the directivity coefficient of the radiation pattern of the resonance mode formed by the radiator in the single-feed mode is less than or equal to 2dBi.

7. The electronic device according to any one of claims 3 to 5, characterized in that: The two radiators working in the dual-feed mode are non-mirror structures.

8. The electronic device according to claim 7, characterized in that: The reference floor comprises a first reference ground edge, a second reference ground edge, a third reference ground edge and a fourth reference ground edge connected end to end in sequence, the first reference ground edge and the third reference ground edge are transverse edges, and the second reference ground edge and the fourth reference ground edge are longitudinal edges; The multiple radiators include a first radiator and a second radiator, the first radiator is arranged at intervals along the longitudinal edge, at least part of the second radiator is arranged at intervals along the transverse edge, the main current formed by the first radiator on the reference ground in the single-feed mode is a longitudinal current, and the main current formed by the second radiator on the reference ground in the single-feed mode is a transverse current.

9. The electronic device according to claim 8, characterized in that: The first target phase difference between the first radiator and the second radiator when operating in the dual-feed mode includes 0°-90°.

10. The electronic device according to claim 8, characterized in that: The second target phase difference between the first radiator and the second radiator working in the dual-feed mode in the left-hand holding scenario includes 180°-360°.

11. The electronic device according to claim 8, characterized in that: The second target phase difference between the first radiator and the second radiator working in the dual-feed mode in the right-hand holding scenario includes 0°-90°.

12. The electronic device according to any one of claims 1 to 6, characterized in that: The two radiators working in the dual-feed mode are mirror-image structures.

13. The electronic device according to claim 12, characterized in that: The reference floor comprises a first reference ground edge, a second reference ground edge, a third reference ground edge and a fourth reference ground edge connected end to end in sequence, the first reference ground edge and the third reference ground edge are transverse edges, and the second reference ground edge and the fourth reference ground edge are longitudinal edges; The plurality of radiators include a first radiator and a second radiator, the first radiators are arranged at intervals along an edge of the second reference ground, and the second radiators are arranged at intervals along an edge of the fourth reference ground.

14. The electronic device according to claim 13, characterized in that: The first target phase difference between the first radiator and the second radiator working in the dual-feed mode includes 0°-60° and 300°-360°.

15. The electronic device according to claim 8 or 13, characterized in that: The frequency band supported by the first radiator in the single-feed mode is the LB frequency band, the frequency band supported by the second radiator in the single-feed mode is the LB frequency band, and the frequency band supported by the first radiator and the second radiator in the dual-feed mode is the LB frequency band.

16. The electronic device according to claim 8 or 13, characterized in that: The first radiator includes a first grounding point, a first feeding point and a first free end arranged in sequence; the second radiator includes a second grounding point, a second feeding point and a second free end arranged in sequence, the first grounding point and the second grounding point are both electrically connected to the reference ground, and the feeding network is electrically connected to the first feeding point and the second feeding point.

17. The electronic device according to claim 8, characterized in that: The at least two radiators also include a third radiator and a fourth radiator, the feeding network is also electrically connected to the third radiator and the fourth radiator, and the switching unit is used to determine that any two target radiators among the first radiator, the second radiator, the third radiator and the fourth radiator operate in the dual-feed mode, and the difference in working efficiency between the two target radiators in the single-feed mode is the minimum value of the difference in working efficiency between any two radiators among the first radiator, the second radiator, the third radiator and the fourth radiator in the single-feed mode.

18. The electronic device according to claim 17, characterized in that: The reference floor includes a first reference ground edge, a second reference ground edge, a third reference ground edge and a fourth reference ground edge which are connected end to end in sequence, the first radiator is arranged at intervals along the second reference ground edge, a portion of the second radiator is arranged at intervals along the third reference ground edge, another portion of the second radiator is arranged at intervals along the fourth reference ground edge, the third radiator is arranged at intervals along the second reference ground edge and is located between the first radiator and the second radiator, and the fourth radiator is arranged at intervals along the fourth reference ground edge.

19. The electronic device according to any one of claims 1-6, 8-11, 13-14, 17-18, characterized in that: The electronic device also includes a controller, which is electrically connected to the switch unit. The controller is used to control the multiple radiators to work in the single-feed mode or two target radiators among the multiple radiators to work in the dual-feed mode according to the signal strength of the multiple radiators in the single-feed mode and the dual-feed mode.

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