Electronic device

Abstract

The invention discloses an electronic device. The first antenna unit comprises a first signal source, a first radiator and a first matching circuit. The first radiator comprises a first grounding point, a first feeding point and a first free end which are arranged in sequence. The first signal source is electrically connected with the first feeding point and is used for exciting the first radiator to at least support the first GPS frequency band. One end of the band-pass circuit is electrically connected with the first feeding point, the other end of the band-pass circuit is grounded, and the band-pass circuit is in a band-stop state for the first GPS frequency band. The second antenna unit comprises a second signal source and a second radiator. The second radiator comprises a second free end, a second feeding point and a second grounding point which are arranged in sequence, the second free end is coupled with the first free end through a gap, and the second signal source is electrically connected with the second feeding point and used for exciting the second radiator to support the target frequency band. And the band-pass circuit is in a band-pass state for the target frequency band. The electronic equipment provided by the invention can cover multiple frequency bands and is good in performance.

Description

Technical Field

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

[0002] With the development of communication technology, antennas have become an especially important part of electronic equipment communication. As the communication needs of electronic equipment increase, how to design high-performance antennas that cover multiple frequency bands has become a technical problem that needs to be solved. Summary of the invention

[0003] The present application provides an electronic device that can cover multiple frequency bands and has good performance.

[0004] The present application provides an electronic device, comprising a first antenna module and a second antenna module which are independently arranged on the top of the electronic device, wherein the first antenna module comprises:

[0005] a first antenna unit, the first antenna unit comprising a first signal source, a first radiator and a first matching circuit, the first radiator comprising a first grounding point, a first feeding point and a first free end arranged in sequence, the first signal source being electrically connected to the first feeding point and used to excite the first radiator to at least support the first GPS frequency band, the first matching circuit comprising a bandpass circuit, one end of the bandpass circuit being electrically connected to the first feeding point, the other end of the bandpass circuit being grounded, the bandpass circuit being in a band-blocking state for the first GPS frequency band, and the first grounding point being grounded; and

[0006] A second antenna unit, the second antenna unit includes a second signal source and a second radiator, the second radiator includes a second free end, a second feeding point and a second grounding point arranged in sequence, the second free end is coupled to the first free end through a gap, the second grounding point is grounded, the second signal source is electrically connected to the second feeding point, and is used to excite the second radiator to support a target frequency band, the minimum frequency of the target frequency band is greater than the maximum frequency of the first GPS frequency band; wherein the passband circuit is in a passband state for the target frequency band; wherein the second antenna module is located on a side of the first antenna unit away from the second antenna unit, and the first grounding point is located between the first free end and the second antenna module, and the second antenna module is used to support a second GPS frequency band.

[0007] The present application provides an electronic device, which reduces the problem of reduced efficiency caused by mutual interference between the antennas of the two GPS frequency bands by independently setting two antennas supporting the GPS frequency band; setting both antennas supporting the GPS frequency band on the top of the electronic device, so that both antennas supporting the GPS frequency band can generate more lateral current modes on the reference floor, thereby increasing the proportion of radiation energy of the two antennas supporting the GPS frequency band in the upper hemisphere, thereby improving GPS performance, by setting a first antenna module including a first antenna unit and a second antenna unit, the first antenna unit including a first signal source, a first radiator and a first matching circuit, the first radiator including a first grounding point, a first feeding point and a first free end arranged in sequence, the first signal source is electrically connected to the first feeding point, and is used to excite the first radiator to support at least the first GPS frequency band, the first matching circuit includes a bandpass circuit, one end of the bandpass circuit is electrically connected to the first feeding point, the other end of the bandpass circuit is grounded, and the bandpass circuit is in a band-stop state for the first GPS frequency band; the second antenna unit includes a second signal source and a second radiator The second radiator comprises a second free end, a second feeding point and a second grounding point which are arranged in sequence, the second free end is coupled with the first free end through a gap, the second signal source is electrically connected to the second feeding point, and is used to excite the second radiator to support a target frequency band, and the minimum frequency of the target frequency band is greater than the maximum frequency of the first GPS frequency band; wherein the bandpass circuit is in a bandpass state for the target frequency band; by setting a bandpass circuit in a bandpass state for the target frequency band and a bandstop state for the first GPS frequency band in the first matching circuit, the target frequency band is conducted to the ground, the interference of the target frequency band to the first GPS frequency band is reduced, the radiation efficiency of the first GPS frequency band is improved, and the electronic device covers multiple frequency bands and has high performance; wherein, by arranging the second antenna module on the side of the first antenna unit away from the second antenna unit, and the first grounding point is located between the first free end and the second antenna module, the second antenna module is used to support the second GPS frequency band, and the antennas of the first GPS frequency band and the second GPS frequency band are designed separately, and the mutual influence between the antenna of the second GPS frequency band and the antenna of the first GPS frequency band is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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.

[0009] Figure 1 is a structural schematic diagram of an electronic device provided in an embodiment of the present application;

[0010] Figure 2 yes Figure 1 A schematic diagram of the exploded structure of the electronic device provided;

[0011] Figure 3 yes Figure 2 A schematic diagram of the structure of an antenna assembly on an electronic device provided;

[0012] Figure 4 yes Figure 3 A schematic diagram of the structure of the first antenna module;

[0013] Figure 5 yes Figure 4 A schematic structural diagram of a first matching circuit of the first type;

[0014] Figure 6 yes Figure 3 A schematic diagram of the structure of the second antenna module;

[0015] Figure 7 yes Figure 4 The first antenna unit supports the GPS-L1 frequency band directional pattern;

[0016] Figure 8 yes Figure 4 A schematic structural diagram of the second first matching circuit;

[0017] Fig. 9 yes Figure 4 A schematic structural diagram of the third first matching circuit;

[0018] Fig.10 yes Figure 3 A current distribution diagram of a first resonant mode on a first antenna module;

[0019] Fig.11 yes Figure 3 A structural schematic diagram of a tuning circuit provided in the first matching circuit of the first antenna module;

[0020] Fig.12 yes Figure 3 A current distribution diagram of a second resonant mode on the first antenna module;

[0021] Fig.13 yes Figure 3 A current distribution diagram of a third resonant mode on the first antenna module;

[0022] Fig.14 yes Figure 3 A current distribution diagram of a fourth resonance mode on the first antenna module;

[0023] Fig.15 yes Figure 4 A schematic diagram of the structure of the second matching circuit;

[0024] Fig.16 yes Figure 4 S parameter curves of the first antenna unit and the second antenna unit;

[0025] Fig.17 yes Figure 4The radiation efficiency curves and the total efficiency curves of the first antenna unit and the second antenna unit;

[0026] Fig.18 is an S parameter curve when the switch unit in the second antenna unit in the embodiment of the present application is switched to different states;

[0027] Fig.19 It is a schematic diagram of the structure in which the second radiator of the second antenna unit in an embodiment of the present application serves as a detection electrode.

[0028] Description of Figure Numbers:

[0029] Electronic device 1000; antenna assembly 100; first antenna module 100a; second antenna module 100b; display screen 200; middle frame 300; back cover 400; middle plate 310; frame 320; top edge 321; bottom edge 322; first side edge 323; second side edge 324; first antenna unit 10; second antenna unit 20; first signal source 101; first radiator 102; first matching circuit M1; first grounding point A; first feeding point B; first free end C; passband circuit N1; second signal source 201; second radiator 202; second free end D; second feeding point E; second grounding point F; second matching circuit M2; second inductor element L2; third inductor element L3; first capacitor element C1; third antenna unit 30; fourth antenna unit 40; third signal Source 301; third radiator 302; third grounding point G; third feeding point H; third free end I; third matching circuit M3; fourth signal source 401; fourth radiator 402; fourth free end J; fourth feeding point K; fourth grounding point O; fourth matching circuit M4; reference floor 50; band-stop circuit N2; first inductor element L1; second capacitor element C2; tuning circuit T; switch switching branch Q; switch unit Q1; first electrical connection point W1; second electrical connection point W2; third electrical connection point W3; fourth electrical connection point W4; fifth electrical connection point W5; first switching branch R1; second switching branch R2; third switching branch R3; fourth switching branch R4; third capacitor element C3; fourth capacitor element C4; fifth capacitor element C5; sixth capacitor element C6; detection circuit 60. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] See also Figure 1 , Figure 1 The following is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application. The electronic device 1000 includes but is not limited to a mobile phone, a tablet computer, a laptop computer, a computer, a wearable device, a drone, a robot, a digital camera, and other devices with communication functions. The present embodiment of the present application is described using a mobile phone as an example, and other electronic devices may refer to this embodiment.

[0034] See also Figure 2 , the electronic device 1000 includes an antenna assembly 100. The antenna assembly 100 can improve antenna efficiency.

[0035] See also Figure 2, 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 includes a display screen 200, a middle frame 300 and a back cover 400 arranged in sequence along the thickness direction. Among them, the middle frame 300 includes a middle plate 310 and a frame 320 surrounding the periphery of the middle plate 310. The display screen 200, the middle plate 310 and the back cover 400 are arranged 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 components such as a main board, a camera module, a receiver module, a battery, and various sensors. One side of the frame 320 is surrounded by the edge of the display screen 200, and the other side of the frame 320 is surrounded by the edge of the back cover 400 to form a complete appearance structure of the electronic device 1000. In this embodiment, the frame 320 and the middle plate 310 are an integrated structure, and the frame 320 and the back cover 400 can be a split structure. In other embodiments, the frame 320 and the back cover 400 may be an integral structure, or the frame 320 and the back cover 400 may be a separate structure. The above is the working environment of the antenna assembly 100 taking a mobile phone as an example, but the antenna assembly 100 of the present application is not limited to the above working environment.

[0036] See also Figure 3 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 the bottom edge 322 is the side facing the ground when the user holds the electronic device 1000. The first side edge 323 is the right side when the user faces the back cover 400 of the electronic device 1000, and the second side edge 324 is the left side when the user faces the back cover 400 of the electronic device 1000. Figure 3 The frame 320 in FIG. 1 is a back view of the rear cover 400 side.

[0037] The antenna assembly 100 includes a first antenna module 100a and a second antenna module 100b which are independently arranged and both are arranged at the top of the electronic device 1000. The mutual independence mentioned in the present application means that the first antenna module 100a and the second antenna module 100b do not form a mutual coupling relationship or the coupling current between them is extremely small to be negligible. The first antenna module 100a and the second antenna module 100b are both arranged at the top of the electronic device 1000. It can be understood that the feeding position of the first antenna module 100a is located at the top edge 321 of the electronic device 1000, and the feeding position of the second antenna module 100b is located at the top edge 321 of the electronic device 1000. The feeding position is located at the top edge 321 of the electronic device 1000. The following is a specific example of the feeding position being located at the top edge 321 of the electronic device 1000 in combination with the setting position of the radiator.

[0038] See also Figure 4The first antenna module 100a at least includes a first antenna unit 10 and a second antenna unit 20.

[0039] The first antenna unit 10 includes a first signal source 101 , a first radiator 102 , and a first matching circuit M1 .

[0040] The first radiator 102 is a port for the first antenna module 100a to send and receive radio frequency signals. The radio frequency signal is transmitted in the air medium in the form of an electromagnetic wave signal. The present application does not specifically limit the material of the first radiator 102. Optionally, the material of the first radiator 102 is a conductive material, including but not limited to conductive materials such as metals and alloys.

[0041] The present application does not specifically limit the shape of the first radiator 102. For example, the shape of the first radiator 102 includes but is not limited to a strip, a sheet, a rod, a coating, a film, and the like. Figure 4 The first radiator 102 shown is only an example and does not limit the shape of the first radiator 102 provided in the present application. In the present embodiment, the first radiators 102 are all in a strip shape. The present application does not limit the extension trajectory of the first radiator 102. Optionally, the first radiator 102 may extend along a straight line, or along a curve, or along a bending line. In the present embodiment, the first radiator 102 is in a straight line. The above-mentioned first radiator 102 may be a line with uniform width on the extension trajectory, or may be a strip with unequal width such as a gradient width and a widened area.

[0042] The present application does not specifically limit the form of the first radiator 102. Optionally, the form of the first radiator 102 includes but is not limited to a metal frame 320, a metal frame embedded in a plastic frame 320, a metal first radiator 102 located in or on the frame 320, a flexible printed circuit board antenna formed on a flexible printed circuit board (FPC), a laser direct structured antenna by laser direct structure (LDS), a printed direct structured antenna by print direct structure (PDS), a conductive sheet antenna (such as a metal bracket antenna), etc. In the embodiment of the present application, the first radiator 102 can be a mechanical design antenna (MDA) designed using the metal insert of the electronic device 1000 itself.

[0043] See also Figure 4 The first radiator 102 includes a first grounding point A, a first feeding point B and a first free end C which are arranged in sequence.

[0044] The first free end C is an end disconnected from other structures. The first grounding point A is used to electrically connect to a reference ground system, wherein the electrical connection method includes but is not limited to direct connection or indirect connection.

[0045] The first signal source 101 is electrically connected to the first feeding point B, and is used to excite the first radiator 102 to at least support the first GPS frequency band.

[0046] The first signal source 101 includes but is not limited to a radio frequency transceiver chip, etc. The first signal source 101 is used to provide a radio frequency excitation current. After the radio frequency excitation current is transmitted to the first radiator 102, and the electrical length of the first radiator 102 meets the resonance condition and the impedance matching condition of the first matching circuit M1, the first radiator 102 can be stimulated to generate a resonant current and form a resonant mode to support the frequency band corresponding to the resonant current. In the embodiment of the present application, the frequency band supported by the first radiator 102 includes the first GPS frequency band. This embodiment is illustrated by taking the first GPS frequency band as the GPS-L5 frequency band as an example.

[0047] In the embodiment of the present application, the first signal source 101 is disposed on the mainboard. The electrical connection method between the first signal source 101 and the first feeding point B includes but is not limited to direct welding, or indirect connection through a coaxial line, a microstrip line, a conductive spring, a conductive adhesive, etc. Specifically, the first signal source 101 is electrically connected to the first feeding point B through a feeding spring (conductive spring) disposed on the mainboard.

[0048] By setting the electrical length of the first radiator 102 and the first matching circuit M1, the first signal source 101 excites the first radiator 102 to form a resonant current supporting the first GPS frequency band. In this application, the mode of the resonant current is referred to as a first resonant mode.

[0049] See also Figure 4 , the first matching circuit M1 includes a bandpass circuit N1, one end of the bandpass circuit N1 is electrically connected to the first feeding point B, and the other end of the bandpass circuit N1 is grounded. The bandpass circuit N1 is in a band-blocking state for the first GPS frequency band. In other words, the bandpass circuit N1 is equivalent to an open circuit for the first GPS frequency band. The first GPS frequency band signal transmitted by the first signal source 101 will not be grounded through the bandpass circuit N1, but will be transmitted to the first radiator 102 through the first feeding point B. The bandpass circuit N1 includes but is not limited to a capacitive element and / or an inductive element.

[0050] See also Figure 4 The second antenna unit 20 includes a second signal source 201 and a second radiator 202.

[0051] The material and shape of the second radiator 202 can be the same as those of the first radiator 102, both are conductive materials, and both are structural components designed using metal embedded in the electronic device 1000. In this embodiment, the second radiator 202 is not limited to a straight line or a curved shape.

[0052] See also Figure 4 The second radiator 202 includes a second free end D, a second feeding point E and a second grounding point F which are arranged in sequence.

[0053] The second free end D is an end disconnected from other structures. The second grounding point F is used to electrically connect to the reference ground system, wherein the electrical connection method includes but is not limited to direct connection or indirect connection.

[0054] The second free end D is coupled to the first free end C through a gap. The insulating gap between the first free end C and the second free end D includes but is not limited to 0.5 mm-2 mm, so that the first radiator 102 and the second radiator 202 can be capacitively coupled. In order to increase the structural strength of the frame, an insulating material can be filled in the insulating gap. There is a strong electric field between the first free end C of the first radiator 102 and the second free end D of the second radiator 202, so that the first free end C and the second free end D can transmit current signals even when they are not in direct contact (not physically connected).

[0055] The second signal source 201 is electrically connected to the second feeding point E, and is used to excite the second radiator 202 to support the target frequency band. The second signal source 201 includes but is not limited to a radio frequency transceiver chip, etc. In the embodiment of the present application, the second signal source 201 is arranged on the mainboard. The electrical connection method between the second signal source 201 and the second feeding point E includes but is not limited to direct welding, or indirect connection through a coaxial line, a microstrip line, a conductive spring, a conductive glue, etc. Specifically, the second signal source 201 is electrically connected to the second feeding point E through a feeding spring (conductive spring) arranged on the mainboard.

[0056] For further information, see Figure 4 The second antenna unit 20 further includes a second matching circuit M2. The second matching circuit M2 is electrically connected between the second feeding point E and the second signal source 201. The second matching circuit M2 includes an inductor element and / or a capacitor element, and the second matching circuit M2 is used to achieve impedance matching to tune the second radiator 202 to form a resonant mode supporting the target frequency band.

[0057] The minimum frequency of the target frequency band is greater than the maximum frequency of the first GPS frequency band. Optionally, the first GPS frequency band is the GPS-L5 frequency band. The target frequency band includes but is not limited to the MHB frequency band, the UHB frequency band, the Wi-Fi 2.4G frequency band, the Wi-Fi 5G frequency band, etc. Among them, the MHB frequency band is 1710MHz-2690MHz. The UHB frequency band includes but is not limited to the N78 frequency band and the N79 frequency band. Take the target frequency band including the MHB frequency band and the N78 frequency band as an example for illustration.

[0058] The passband circuit N1 is in a passband state for the target frequency band. The impedance of the passband circuit N1 is relatively small for the target frequency band, and it is in a conducting state. In other words, the passband circuit N1 is equivalent to a short circuit or a small impedance to the ground relative to the target frequency band. After the target frequency band excited by the second signal source 201 is transmitted to the first radiator 102 through the coupling gap, it is grounded through the first feeding point B and the passband circuit N1, and will not affect the first signal source 101. In this way, the GPS-L5 frequency band excited by the first signal source 101 will not be affected by the second antenna unit 20, thereby improving the performance of the GPS-L5 frequency band.

[0059] Optional, see Figure 5 The band-pass circuit N1 includes a second inductance element L2, a third inductance element L3 and a first capacitance element C1. One end of the second inductance element L2 is electrically connected to the first feeding point B, the other end of the second inductance element L2 is electrically connected to one end of the first capacitance element C1, the other end of the first capacitance element C1 is grounded, one end of the third inductance element L3 is electrically connected to the first feeding point B, and the other end of the third inductance element L3 is grounded.

[0060] The present application does not specifically limit the inductance value of the second inductance element L2, the inductance value of the third inductance element L3, and the capacitance value of the first capacitance element C1. For example, the inductance value of the second inductance element L2 is 2.7nH, the inductance value of the third inductance element L3 is 8.2nH, and the capacitance value of the first capacitance element C1 is 2.2pF, but it is not limited to these data.

[0061] Wherein, the second antenna module 100b is located on the side of the first antenna unit 10 away from the second antenna unit 20, and the first grounding point A is located between the first free end C and the second antenna module 100b. The second antenna module 100b is used to support the second GPS frequency band. The first antenna unit 10 is used to support the first GPS frequency band, and the second antenna module 100b is used to support the second GPS frequency band. Wherein, the first GPS frequency band is the GPS-L1 frequency band, and the second GPS frequency band is the GPS-L5 frequency band; or, the first GPS frequency band is the GPS-L5 frequency band, and the second GPS frequency band is the GPS-L1 frequency band. Of course, in other embodiments, the first GPS frequency band and the second GPS frequency band are both the GPS-L1 frequency band; or, the first GPS frequency band and the second GPS frequency band are both the GPS-L5 frequency band. The above design realizes that the antenna of the first GPS frequency band and the antenna of the second GPS frequency band are independent of each other. Since the first grounding point A is arranged between the antenna of the first GPS frequency band and the antenna of the second GPS frequency band, the coupling effect between the antenna of the first GPS frequency band and the antenna of the second GPS frequency band is reduced, and the mutual influence between the antenna of the second GPS frequency band and the antenna of the first GPS frequency band is reduced.

[0062] The electronic device 1000 provided in the present application reduces the problem of reduced efficiency caused by mutual interference between the two GPS frequency band antennas by setting two GPS frequency band antennas independently from each other; the two GPS frequency band antennas are both set on the top of the electronic device 1000, so that the two GPS frequency band antennas can generate more lateral current modes on the reference floor, increase the proportion of radiation energy of the two GPS frequency band antennas in the upper hemisphere, and thus improve GPS performance. The first antenna module 100a includes a first antenna unit 10, a second antenna unit 20, and a second antenna unit 30. The first antenna unit 10 includes a first signal source 101, a first radiator 102 and a first matching circuit M1. The first radiator 102 includes a first grounding point A, a first feeding point B and a first free end C arranged in sequence. The first signal source 101 is electrically connected to the first feeding point B to excite the first radiator 102 to at least support the first GPS frequency band. The first matching circuit M1 includes a passband circuit N1. One end of the passband circuit N1 is electrically connected to the first feeding point B, and the other end of the passband circuit N1 is grounded. The passband circuit N1 is in a band-blocking state for the first GPS frequency band. The second antenna unit 20 includes a second signal source 20 1 and a second radiator 202, the second radiator 202 includes a second free end D, a second feeding point E and a second grounding point F which are arranged in sequence, the second free end D is coupled with the first free end C through a gap, the second signal source 201 is electrically connected to the second feeding point E, and is used to excite the second radiator 202 to support a target frequency band, the minimum frequency of the target frequency band is greater than the maximum frequency of the first GPS frequency band; wherein the bandpass circuit N1 is in a bandpass state for the target frequency band; by setting the bandpass circuit N1 in a bandpass state for the target frequency band and in a bandstop state for the first GPS frequency band in the first matching circuit M1, so as to conduct the target frequency band The target frequency band is lowered to the ground, and the interference of the target frequency band to the first GPS frequency band is reduced, and the radiation efficiency of the first GPS frequency band is improved, so that the electronic device 1000 covers multiple frequency bands and has high performance; wherein, by arranging the second antenna module 100b on the side of the first antenna unit 10 away from the second antenna unit 20, and the first grounding point A is located between the first free end C and the second antenna module 100b, the second antenna module 100b is used to support the second GPS frequency band, and the antennas of the first GPS frequency band and the second GPS frequency band are designed separately, thereby reducing the mutual influence between the antenna of the second GPS frequency band and the antenna of the first GPS frequency band.

[0063] See also Figure 6 The second antenna module 100b includes a third antenna unit 30 and a fourth antenna unit 40.

[0064] See also Figure 6 , the third antenna unit 30 includes a third signal source 301 and a third radiator 302.

[0065] The material and shape of the third radiator 302 can be the same as those of the first radiator 102, both are conductive materials, and both are structural components designed using metal embedded in the electronic device 1000. In this embodiment, the third radiator 302 is not limited to a straight line or a curved shape.

[0066] See also Figure 6 The third radiator 302 includes a third grounding point G, a third feeding point H and a third free end I which are arranged in sequence. The third free end I is an end which is disconnected from other structures. The third grounding point G is used to electrically connect to the reference ground system, wherein the electrical connection method includes but is not limited to direct connection or indirect connection.

[0067] The third signal source 301 is electrically connected to the third feeding point H, and is used to excite the third radiator 302 to support the second GPS frequency band and the first Wi-Fi frequency band. In this embodiment, the second GPS frequency band is the GPS-L1 frequency band as an example. The first Wi-Fi frequency band is the Wi-Fi 2.4G frequency band or the Wi-Fi 5G frequency band. In this embodiment, the first Wi-Fi frequency band is the Wi-Fi 2.4G frequency band as an example.

[0068] The third signal source 301 includes but is not limited to a radio frequency transceiver chip, etc. In the embodiment of the present application, the third signal source 301 is arranged on the mainboard. The electrical connection method between the third signal source 301 and the third feeding point H includes but is not limited to direct welding, or indirect connection through a coaxial line, a microstrip line, a conductive spring, a conductive adhesive, etc. Specifically, the third signal source 301 is electrically connected to the third feeding point H through a feeding spring (conductive spring) arranged on the mainboard.

[0069] For further information, see Figure 6 The third antenna unit 30 further includes a third matching circuit M3. The third matching circuit M3 is electrically connected between the third feeding point H and the third signal source 301. The third matching circuit M3 includes an inductor element and / or a capacitor element, and the third matching circuit M3 is used to achieve impedance matching to tune the third radiator 302 to form a resonant mode supporting the second GPS frequency band and the first Wi-Fi frequency band.

[0070] See also Figure 6 , the fourth antenna unit 40 includes a fourth signal source 401 and a fourth radiator 402.

[0071] The material and shape of the fourth radiator 402 can be the same as those of the first radiator 102, both are conductive materials, and both are structural components designed using metal embedded in the electronic device 1000. In this embodiment, the fourth radiator 402 is not limited to a straight line or a curved shape.

[0072] See also Figure 6The fourth radiator 402 includes a fourth free end J, a fourth feeding point K and a fourth grounding point O which are arranged in sequence. The fourth free end J is an end disconnected from other structures. The fourth grounding point O is used to electrically connect to the reference ground system, wherein the electrical connection method includes but is not limited to direct connection or indirect connection.

[0073] The fourth free end J is coupled to the third free end I through a gap. The insulating gap between the third free end I and the fourth free end J includes but is not limited to 0.5mm-2mm, so that the third radiator 302 and the fourth radiator 402 can be capacitively coupled. In order to increase the structural strength of the frame, an insulating material can be filled in the insulating gap. There is a strong electric field between the third free end I of the third radiator 302 and the fourth free end J of the second radiator 202, so that the third free end I and the fourth free end J can transmit current signals even when they are not in direct contact (not physically connected).

[0074] The fourth signal source 401 is electrically connected to the fourth feeding point K, and is used to excite the fourth radiator 402 to support the second Wi-Fi frequency band and the UHB frequency band. In this embodiment, the second Wi-Fi frequency band is the Wi-Fi 5G frequency band. In this embodiment, the UHB frequency band is the N78 frequency band as an example.

[0075] In the embodiment of the present application, the fourth signal source 401 is disposed on the mainboard. The electrical connection method between the fourth signal source 401 and the fourth feeding point K includes but is not limited to direct welding, or indirect connection through a coaxial line, a microstrip line, a conductive spring, a conductive adhesive, etc. Specifically, the fourth signal source 401 is electrically connected to the fourth feeding point K through a feeding spring (conductive spring) disposed on the mainboard.

[0076] For further information, see Figure 6 The fourth antenna unit 40 further includes a fourth matching circuit M4. The fourth matching circuit M4 is electrically connected between the fourth feeding point K and the fourth signal source 401. The fourth matching circuit M4 includes an inductor element and / or a capacitor element, and the fourth matching circuit M4 is used to achieve impedance matching to tune the fourth radiator 402 to form a resonant mode supporting the second Wi-Fi frequency band and the UHB frequency band.

[0077] From the above, it can be seen that the first antenna module 100a and the second antenna module 100b provided in the present application can support GPS-L1 frequency band, GPS-L5 frequency band, Wi-Fi 2.4G frequency band, Wi-Fi 5G frequency band, MHB frequency band, and N78 frequency band. By adjusting the feeding position of the first antenna module 100a and the second antenna module 100b, their independent design, and the matching circuit design, it is possible to achieve coverage of multiple frequency bands while also improving GPS performance.

[0078] See also Figure 3 , the electronic device 1000 also includes a reference floor 50. The reference floor 50 is arranged in the area surrounded by the frame 320. The reference floor 50 is the above-mentioned reference ground system, and the reference ground system includes but is not limited to the metal alloy part of the middle plate and the reference ground metal part of the circuit board (including the main board and the sub-board). Roughly speaking, the reference ground system in the electronic device 1000 can be equivalent to a rough rectangle, so it is called the reference floor 50. Among them, the reference floor 50 does not indicate that the shape of the reference ground is plate-shaped and is a rectangular plate.

[0079] See also Figure 3 and Figure 4 , the first radiator 102 is arranged on the top edge 321, and further, the first feeding point B is also located on the top edge 321, that is, the feeding position of the first antenna unit 10 is arranged on the top edge 321. A part of the second radiator 202 is arranged on the top edge 321, and another part of the second radiator 202 is arranged on the first side edge 323. Among them, the first radiator 102 is farther away from the first side edge 323 than the second radiator 202. Specifically, from the second side edge 324 to the direction of the first side edge 323, the first grounding point A, the first feeding point B and the first free end C of the first radiator 102, the second free end D of the second radiator 202, and the second feeding point E are arranged in sequence, and the second grounding point F is located on the first side edge 323.

[0080] See also Figure 3 and Figure 4 , the first feeding point B is located at a position where the top edge 321 is not close to the first side edge 323, so that the floor current formed by the first antenna unit 10 in the resonant mode supporting the GPS-L5 frequency band on the reference floor 50 is mainly a transverse current, that is, it excites the reference floor 50 to generate a transverse current mode, and the transverse current mode is a current mode in which the current direction is parallel to the top edge 321. The resonant mode of the first antenna unit 10 in the GPS-L5 frequency band is mainly a transverse current mode on the reference floor 50, which can increase the proportion of the radiation energy of the GPS-L5 frequency band in the upper hemisphere.

[0081] See also Figure 3 and Figure 6, a part of the radiator of the third antenna unit 30 (i.e., the third radiator 302) is arranged on the top edge 321. Another part of the radiator of the third antenna unit 30 is arranged on the second side edge 324. The feeding point of the radiator of the third antenna unit 30 (i.e., the third feeding point H) is arranged on the top edge 321, that is, the feeding position of the first antenna unit 10 is arranged on the top edge 321. The radiator of the fourth antenna unit 40 (i.e., the fourth radiator 402) is located on the top edge 321. Among them, the fourth radiator 402 is farther away from the second side edge 324 than the third radiator 302. Specifically, from the first side edge 323 to the direction of the second side edge 324, the fourth grounding point O, the fourth feeding point K and the fourth free end J of the fourth radiator 402, the third free end I of the third radiator 302, and the third feeding point H are arranged in sequence, and the third grounding point G is located on the second side edge 324.

[0082] See also Figure 3 and Figure 6 , the third feeding point H is located at a position where the top edge 321 is not close to the second side edge 324, so that the floor current formed by the third antenna unit 30 in the resonant mode supporting the GPS-L1 frequency band on the reference floor 50 is mainly a transverse current, that is, it excites the reference floor 50 to generate a transverse current mode, and the transverse current mode is a current mode in which the current direction is parallel to the top edge 321. The resonant mode of the third antenna unit 30 in the GPS-L1 frequency band is mainly a transverse current mode on the reference floor 50, which can increase the proportion of the radiation energy of the GPS-L1 frequency band in the upper hemisphere, so that the upper hemisphere proportion of the GPS-L1 frequency band and the GPS-L5 frequency band is about 50%.

[0083] See also Figure 7 , Figure 7 This is the directional diagram of the first antenna unit 10 provided in the present application supporting the GPS-L5 frequency band. From the directional diagram of the GPS-L5 frequency band, it can be seen that the directional diagram of the GPS-L5 frequency band is basically balanced up and down, with the upper hemisphere accounting for 50%, and has good GPS performance.

[0084] The structure of the first matching circuit M1 is described below by way of example with reference to the accompanying drawings.

[0085] See also Figure 8, the first matching circuit M1 also includes a band-stop circuit N2. One end of the band-stop circuit N2 is electrically connected to the first feeding point B, and the other end of the band-stop circuit N2 is electrically connected to the first signal source 101. The band-stop circuit N2 is in a band-stop state for the target frequency band, and in a band-pass state for the first GPS frequency band. In other words, the band-pass circuit N1 is equivalent to an open circuit for the target frequency band, and is equivalent to a short circuit or a low impedance state for the first GPS frequency band. The first GPS frequency band can be transmitted from the first signal source 101 to the first radiator 102 through the band-stop circuit N2, and the target frequency band signal emitted by the second signal source 201 is coupled to the first radiator 102 and then goes to the ground through the band-pass circuit N1 and is blocked by the band-stop circuit N2, without affecting the first signal source 101, thereby avoiding the first GPS frequency band (GPS-L5 frequency band) from being affected by the second antenna unit 20, and further improving the performance of the first GPS frequency band (GPS-L5 frequency band). The band-stop circuit N2 includes but is not limited to a capacitor element and / or an inductor element.

[0086] The present application further blocks the influence of the signal emitted by the second signal source 201 on the first signal source 101 by setting a band-stop circuit N2 in the first matching circuit M1, and further improves the performance of the first signal source 101 in transmitting and receiving the first GPS frequency band (GPS-L5 frequency band).

[0087] Optional, see Figure 8 , the band-resistance circuit N2 includes a first inductance element L1. One end of the first inductance element L1 is electrically connected to the first feeding point B, and the other end of the first inductance element L1 is electrically connected to the first signal source 101. The first inductance element L1 is a large inductance. The present application does not specifically limit the inductance value of the first inductance element L1. Optionally, the inductance value of the first inductance element L1 is 10nH, but is not limited to this data. The first inductance element L1 can pass low frequencies and block high frequencies, that is, it can pass the first GPS frequency band (GPS-L5 frequency band), and block the target frequency band from passing, so that the first signal source 101 can smoothly transmit and receive the first GPS frequency band (GPS-L5 frequency band), and block the target frequency band from interfering with the first signal source 101.

[0088] Optional, see Fig. 9, the first matching circuit M1 further includes a second capacitive element C2. One end of the second capacitive element C2 is electrically connected to the first feeding point B, and the other end of the second capacitive element C2 is grounded. The second capacitive element C2 is used to adjust the electrical length of the first radiator 102, so that the electrical length of the first radiator 102 matches the resonance mode of 1 / 4 wavelength of the first GPS frequency band formed by the first radiator 102 under the excitation of the first signal source 101. In other words, the electrical length of the first radiator 102 is close to 1 / 4 wavelength of the first GPS frequency band, which promotes the first radiator 102 to form a resonance mode of 1 / 4 wavelength of the first GPS frequency band under the excitation of the first signal source 101, so as to support the first GPS frequency band.

[0089] Optionally, the second capacitor element C2 is a small capacitor, and the second capacitor element C2 is also used to conduct the target frequency band (e.g., MHB+N78 frequency band) to ground, so that the target frequency band (e.g., MHB+N78 frequency band) is grounded through the second capacitor element C2, thereby preventing the target frequency band (e.g., MHB+N78 frequency band) from affecting the first signal source 101.

[0090] The above is an example of the first matching circuit M1 , and the first matching circuit M1 may also have other structures.

[0091] See also Fig.10 For the first antenna unit 10, the first signal source 101 can excite the first radiator 102 to form a first resonance mode supporting the first GPS frequency band. The resonance current of the first resonance mode is distributed between the first free end C and the first grounding point A. Optionally, the resonance current of the first resonance mode can flow from the first free end C to the first grounding point A. Due to the periodicity of the current, the resonance current of the first resonance mode can also flow from the first grounding point A to the first free end C.

[0092] The first resonant mode is a 1 / 4 wavelength mode of the first GPS frequency band. In other words, the electrical length of the first radiator 102 is close to 1 / 4 wavelength of the center frequency of the first GPS frequency band. The first antenna unit 10 provided in this embodiment is an IFA antenna. The first resonant mode is a 1 / 4 wavelength mode. The 1 / 4 wavelength mode is the ground state mode of the IFA antenna and has a relatively high efficiency to ensure that the first antenna unit 10 has a relatively high efficiency when operating in the first GPS frequency band.

[0093] For the first antenna unit 10, the first signal source 101 can also excite the first radiator 102 to support the LB frequency band. In other words, the first resonant mode can also support the LB frequency band. The LB frequency band is 703MHz-960MHz. Optionally, the LB frequency band includes but is not limited to the N28 frequency band.

[0094] See also Fig.11 , the first matching circuit M1 also includes a tuning circuit T. The equivalent capacitance of the tuning circuit T for the LB band is different from the equivalent capacitance of the tuning circuit T for the first GPS band. Specifically, the equivalent capacitance of the tuning circuit T for the LB band is smaller than the equivalent capacitance of the tuning circuit T for the first GPS band. The first radiator 102 is combined with the tuning circuit T so that the effective electrical length of the first radiator 102 (including the electrical length of the tuning circuit T) is close to 1 / 4 wavelength of the LB band (e.g., N28 band) and also close to 1 / 4 wavelength of the first GPS band (e.g., GPS-L5 band). The tuning circuit T includes an inductor element and / or a capacitor element.

[0095] This embodiment integrates a low-frequency antenna into the first antenna unit 10 so that the first antenna unit 10 can support the GPS-L5 band as well as the LB band, thereby achieving multi-band coverage while also increasing the energy share of the GPS-L5 band and the GPS-L1 band in the upper hemisphere, thereby improving the performance of the GPS-L5 band and the GPS-L1 band.

[0096] In the embodiment of the present application, the first antenna module 100a is disposed on the right side (back view) of the top edge 321 of the electronic device 1000, and the second antenna module 100b is disposed on the left side (back view) of the top edge 321 of the electronic device 1000. Of course, in other embodiments, the first antenna module 100a may also be disposed on the left side (back view) of the top edge 321 of the electronic device 1000, and the second antenna module 100b may be disposed on the right side (back view) of the top edge 321 of the electronic device 1000.

[0097] Optionally, the target frequency band includes an MB frequency band. The MB frequency band is 1710 MHz-2170 MHz. For example, the MB frequency band includes at least one of: a B1 frequency band, a B3 frequency band, a B40 frequency band, and a B41 frequency band.

[0098] See also Fig.12 , the second signal source 201 excites the second radiator 202 to form a second resonance mode supporting the MB frequency band. The resonance current of the second resonance mode is distributed between the second ground point F and the second free end D. Optionally, the resonance current of the second resonance mode can flow from the second free end D to the second ground point F. Due to the periodicity of the current, the resonance current of the second resonance mode can also flow from the second ground point F to the second free end D.

[0099] The second resonant mode is a 1 / 4 wavelength mode of the MB frequency band. In other words, the electrical length of the second radiator 202 is close to a 1 / 4 wavelength of the center frequency of the MB frequency band. The second antenna unit 20 provided in this embodiment is an IFA antenna. The second resonant mode is a 1 / 4 wavelength mode. The 1 / 4 wavelength mode is the ground state mode of the IFA antenna and has a relatively high efficiency, so as to ensure that the second antenna unit 20 has a relatively high efficiency when operating in the MB frequency band.

[0100] Optionally, the target frequency band also includes a HB frequency band. The HB frequency band is 2300 MHz-2690 MHz. For example, the HB frequency band includes: at least one of a B40 frequency band and a B41 frequency band.

[0101] See also Fig.13 , the second signal source 201 excites the second radiator 202 and the first radiator 102 to form a third resonance mode supporting the HB frequency band. Since the branch length of the first radiator 102 is relatively long, and the first radiator 102 is coupled with the second radiator 202, when the resonance current of the third resonance mode is generated on the second radiator 202, a relatively strong current is generated on the first radiator 102 at the same time. The resonance current of the third resonance mode is distributed between the second feeding point E and the second free end D, and between the first free end C and the first grounding point A. The resonance current between the second feeding point E and the second free end D has the same direction as the resonance current between the first free end C and the first grounding point A. Optionally, the resonance current of the third resonance mode can flow from the first grounding point A to the first free end C, and from the second free end D to the second feeding point E. Due to the periodicity of the current, the resonance current of the third resonance mode can also flow from the second feeding point E to the second free end D, and from the first free end C to the first grounding point A.

[0102] In this embodiment, the equivalent electrical length between the second feeding point E and the second free end D, and between the first free end C and the first grounding point A is close to 1 / 4 wavelength of the center frequency of the HB band, so that a 1 / 4 wavelength mode supporting the HB band is formed on the second radiator 202 between the second feeding point E and the second free end D, and on the first radiator 102 between the first free end C and the first grounding point A.

[0103] Optionally, the target frequency band further includes a UHB frequency band. The UHB frequency band is a frequency band greater than 2690 MHz. For example, the UHB frequency band includes but is not limited to at least one of the N78 frequency band and the N79 frequency band.

[0104] Optional, see Fig.14, the second signal source 201 excites the second radiator 202 to form a fourth resonance mode supporting the UHB frequency band. The resonant current of the fourth resonance mode is distributed between the second feeding point E and the second free end D. The resonant current of the fourth resonance mode can flow from the second feeding point E to the second free end D, or from the second free end D to the second feeding point E. The fourth resonance mode is a 1 / 4 wavelength mode of the UHB frequency band. The second feeding point E to the second free end D of the second antenna unit 20 provided in this embodiment is a monopole antenna. The second resonance mode is a 1 / 4 wavelength mode. The 1 / 4 wavelength mode is the ground state mode of the monopole antenna, and has a relatively high efficiency, so as to ensure that the second antenna unit 20 has a relatively high efficiency when operating in the UHB frequency band.

[0105] The first antenna unit 10 and the second antenna unit 20 provided in the embodiment of the present application are designed with respect to the electrical length of the first radiator 102, the electrical length of the second radiator 202, the position of the first feeding point B, the position of the second feeding point E, and the first matching circuit M1 and the second matching circuit M2, so that a first resonant mode is formed on the first antenna unit 10 to support GPS-L5 (or GPS-L5+LB band), and a second resonant mode, a third resonant mode and a fourth resonant mode are formed on the second antenna unit 20 to support MB band+HB band+N78 band, thereby achieving coverage of multiple bands while increasing the proportion of GPS-L5 in the upper hemisphere and improving the radiation efficiency of GPS-L5.

[0106] The specific structure of the second matching circuit M2 is described below with reference to the accompanying drawings.

[0107] See also Fig.15 , the second matching circuit M2 includes a switch switching branch Q. The switch switching branch Q includes a switch unit Q1 and a plurality of switch branches. One end of the switch unit Q1 is electrically connected to the second feeding point E, and the other end of the switch unit Q1 is used to conduct at least one of the plurality of switch branches. The switch unit Q1 includes but is not limited to a switch tube, a MOS tube, a transistor, etc. The switch unit Q1 can form a single conduction channel between the second feeding point E and the plurality of switch branches, or can form a plurality of conduction channels.

[0108] The other ends of the plurality of switching branches are grounded and / or electrically connected to the second signal source 201. The switch switching branch Q is used to switch the sub-band in the target frequency band, for example, the switch switching branch Q is used to switch the sub-band in the MHB frequency band, for example, the switch switching branch Q is used to switch to at least one of the B1, B3, B40, B41 frequency bands.

[0109] For example, see Fig.15, the switch unit Q1 includes a first electrical connection point W1, a second electrical connection point W2, a third electrical connection point W3, a fourth electrical connection point W4 and a fifth electrical connection point W5. The first electrical connection point W1 is electrically connected to the second feeding point E. Fig.15 , the multiple switching branches include a first switching branch R1, a second switching branch R2, a third switching branch R3, and a fourth switching branch R4. Among them, the second electrical connection point W2 is connected to the first switching branch R1. The third electrical connection point W3 is connected to the second switching branch R2, the fourth electrical connection point W4 is connected to the third switching branch R3, and the fifth electrical connection point W5 is connected to the fourth switching branch R4. Under the action of the controller of the electronic device 1000, the switch unit Q1 can realize the first electrical connection point W1 and one or more electrical connection points of the second electrical connection point W2, the third electrical connection point W3, the fourth electrical connection point W4, and the fifth electrical connection point W5.

[0110] See also Fig.15 , the second matching circuit M2 also includes a third capacitor element C3. One end of the third capacitor element C3 is electrically connected to the second feeding point E, and the other end of the third capacitor element C3 is electrically connected to the second signal source 201. The capacitance value of the third capacitor element C3 is less than the first preset capacitance value. The present application does not specifically limit the first preset capacitance value. Optionally, the first preset capacitance value is a small capacitance threshold relative to the MB frequency band, for example, the first preset capacitance value is 2pF, 3pF, etc. The third capacitor element C3 is a small capacitor relative to the MB frequency band. For example, the capacitance value of the third capacitor element C3 is 1pF, but is not limited to this data. The third capacitor element C3 is used to tune the second radiator 202 to support the MB frequency band, which helps the second antenna unit 20 to tune out a second resonant mode that supports the MB frequency band.

[0111] Optionally, the plurality of switching branches include at least one series branch. One end of the series branch away from the switch unit Q1 is electrically connected to the second signal source 201. For example, one end of the series branch is electrically connected to the second electrical connection point W2, and the other end of the series branch is electrically connected to the second signal source 201. When the second electrical connection point W2 is conductive with the first electrical connection point W1, the series branch is connected in series between the second signal source 201 and the second feeding point E. Optionally, the series branch may be the first switching branch R1 described above.

[0112] The target frequency band includes at least one HB frequency band. In this implementation, the HB frequency band includes but is not limited to the B40 frequency band.

[0113] See also Fig.15, when the second antenna unit 20 operates in the HB frequency band, the switch unit Q1 conducts the second feeding point E and at least one of the series branches, that is, the second electrical connection point W2 is connected to the first electrical connection point W1. The series branch connected to the second feeding point E includes a fourth capacitor element C4. The capacitance value of the fourth capacitor element C4 is greater than the second preset capacitance value, or the series branch connected to the second feeding point E is a short-circuit branch to increase the capacitance of the feed series connection, which is conducive to tuning to support a larger HB frequency band, such as the B40 frequency band. The present application does not make specific restrictions on the second preset capacitance value. Optionally, the second preset capacitance value is a large capacitance threshold relative to the HB frequency band, for example, the second preset capacitance value is 8pF, 9pF, etc. The fourth capacitor element C4 is a large capacitor relative to the HB frequency band, and the series branch is a short circuit relative to the HB frequency band; of course, the series branch can also be a 0 ohm short-circuit branch directly to the ground. For example, the capacitance value of the fourth capacitor C4 is 10 pF, but is not limited thereto. The fourth capacitor C4 is used to tune the second radiator 202 to support a larger HB frequency band, such as the B40 frequency band, so as to facilitate the second antenna unit 20 to tune a third resonance mode supporting the B40 frequency band.

[0114] The plurality of switching branches further include at least one parallel branch. The parallel branch is grounded at one end away from the switch unit Q1. The parallel branch includes an inductor element and / or a capacitor element. Optionally, the second switching branch R2, the third switching branch R3 and the fourth switching branch R4 are all parallel branches with one end away from the switch unit Q1 being grounded. The second switching branch R2, the third switching branch R3 and the fourth switching branch R4 have different impedance values.

[0115] For example, the second switching branch R2 includes a capacitor element, and the capacitance value of the capacitor element is 0.5pF, but not limited to this data. The third switching branch R3 includes an inductor element, and the inductance value of the inductor element is 7nH, but not limited to this data. The fourth switching branch R4 includes an inductor element, and the inductance value of the inductor element is 20nH, but not limited to this data. The above is an example of the second switching branch R2, the third switching branch R3 and the fourth switching branch R4, but is not limited to the above implementation.

[0116] Optional, see Fig.15, the second matching circuit M2 also includes a fifth capacitor element C5. One end of the fifth capacitor element C5 is electrically connected to the second feeding point E, and the other end of the fifth capacitor element C5 is grounded. The fifth capacitor element C5 is used to adjust the electrical length of the second radiator 202, so that the effective electrical length of the second radiator 202 matches the frequency band supported by the second antenna unit 20, so that the second resonant mode, the third resonant mode and the fourth resonant mode are easily formed on the second radiator 202. The present application does not make a specific limitation on the capacitance value of the fifth capacitor element C5. For example, the capacitance value of the fifth capacitor element C5 is 0.3pF, but is not limited to this data.

[0117] See also Fig.16 , Fig.16 yes Figure 4 S parameter curves of the first antenna unit 10 and the second antenna unit 20. Fig.16 The middle curve a is the S parameter curve of the first antenna unit 10, Fig.16 The middle curve b is the S parameter curve of the second antenna unit 20. From curve a, it can be seen that the first antenna unit 10 supports the GPS-L5 frequency band, and from curve b, it can be seen that the second antenna unit 20 supports the MB+HB+N78 frequency band. In this way, the first antenna module 100a can simultaneously support the GPS-L5+MB+HB+N78 frequency band.

[0118] See also Fig.17 , Fig.17 yes Figure 4 The radiation efficiency curves and total efficiency curves of the first antenna unit 10 and the second antenna unit 20 are shown in FIG. 1 . Curve a is the radiation efficiency curve of the first antenna unit 10, curve b is the total efficiency curve of the first antenna unit 10, curve c is the radiation efficiency curve of the second antenna unit 20, and curve d is the total efficiency curve of the second antenna unit 20. From the radiation efficiency curves and total efficiency curves of the first antenna unit 10 and the second antenna unit 20, it can be seen that the first antenna unit 10 has relatively good efficiency in the GPS-L5 band. The second antenna unit 20 has good efficiency in the MB band, the HB band, and the N78 band.

[0119] See also Fig.18 , Fig.18 is an S parameter curve when the switch unit Q1 in the second antenna unit 20 in the embodiment of the present application is switched to different states. Fig.18 It can be seen that curve a is Fig.15The S parameters when the fourth electrical connection point W4 and the first electrical connection point W1 are turned on, when the switch unit Q1 is switched to this state, the second antenna unit 20 has a resonance point between 2.1 GHz, so the second antenna unit 20 can support the B1 frequency band. In addition, the second antenna unit 20 has a resonance point near 3.6 GHz, so the second antenna unit 20 can support the N78 frequency band.

[0120] Curve b is Fig.15 The S parameters when the first electrical connection point W1, the second electrical connection point W2, the third electrical connection point W3, the fourth electrical connection point W4, and the fifth electrical connection point W5 are all disconnected. When the switch unit Q1 is switched to this state, the second antenna unit 20 has resonance points near 1.7 GHz, 2.6 GHz, and 3.5 GHz, so the second antenna unit 20 can support the B3+B41+N78 frequency band.

[0121] Curve c is Fig.15 The S parameters when the first electrical connection point W1 is electrically connected to the second electrical connection point W2 and the fifth electrical connection point W5, when the switch unit Q1 is switched to this state, the second antenna unit 20 has a resonance point near 2.4GHz, so the second antenna unit 20 can support the B40 frequency band. The above three switching states of the switch unit Q1 are for example, and the switch unit Q1 also includes other switching states. It can be seen from the above that the second antenna unit 20 provided in the present application can better cover all the frequency bands of MHB and the N78 frequency band by switching the switch unit Q1 to different conduction states.

[0122] In the process of satisfying the Specific Absorption Rate (SAR) standard of the human body to electromagnetic waves, the electronic device 1000 generally achieves the SAR value reaching the standard by controlling the power backoff of the antenna unit when the human body approaches the antenna unit of the electronic device 1000. How to implement SAR hotspot coverage detection on the electronic device 1000 is a technical problem that needs to be solved.

[0123] In the implementation manner of the present application, the second radiator 202 is also used as a detection electrode for detecting SAR hotspot coverage. The specific implementation manner is as follows:

[0124] Optional, see Fig.19 The second antenna unit 20 further includes a sixth capacitor C6. One end of the sixth capacitor C6 is electrically connected to the second ground point F, and the other end of the sixth capacitor C6 is grounded, so that the second radiator 202 can also be used as a detection electrode for SAR value adjustment.

[0125] The sixth capacitor element C6 is a large capacitor. The sixth capacitor element C6 is a DC blocking capacitor that isolates a DC signal or a small AC signal. The sixth capacitor element C6 is an open circuit for a DC signal or a small AC signal. The second grounding point F of the second radiator 202 is grounded through the sixth capacitor element C6. The second feeding point E of the second radiator 202 is connected to the second signal source 201 through the third capacitor element C3. In this way, the sixth capacitor element C6 and the third capacitor element C3 both play a role in isolating a DC signal or a small AC signal, so that the second radiator 202 is in a suspended state compared to the DC signal or the small AC signal.

[0126] See also Fig.19 The electronic device 1000 further includes a detection circuit 60. The detection circuit 60 is electrically connected to the second radiator 202 and is used to detect whether the subject to be detected is close to the second radiator 202 and the area near the second radiator 202. Optionally, the detection circuit 60 may be electrically connected to the second feeding point E.

[0127] In the present application, the second radiator 202 is disposed at a corner, so that it can be used for proximity detection within a certain angle range corresponding to the top edge 321 and the first side edge 323 .

[0128] Furthermore, the second radiator 202 and the detection circuit 60 form a proximity sensor for detecting whether the subject to be detected is approaching. Furthermore, the detection circuit 60 is electrically connected to the second radiator 202 and is provided with a large inductor (for example, the inductor is 82nH) to prevent high-frequency AC signals from flowing to the second radiator 202.

[0129] When a hand or head approaches the second radiator 202, the second radiator 202 senses the capacitance change caused by the approach of the human body to determine the approaching state of the human body. After determining that the human body is approaching, the controller reduces the transmission power of the second antenna unit 20 and / or the antenna unit near the second antenna unit 20, thereby achieving the purpose of intelligent SAR reduction.

[0130] The above is an implementation of the second radiator 202 also serving as a proximity sensor for detecting whether the subject to be measured is approaching. In other implementations, other radiators may be suspended to serve as proximity sensors for detecting whether the subject to be measured is approaching.

[0131] The third antenna unit 30 provided in the present application can support the GPS-L1+Wi-Fi 2.4G frequency band, wherein the third signal source 301 excites the third radiator 302 to generate a left-handed mode from the third free end I to the third grounding point G to support the GPS-L1 frequency band. The third signal source 301 excites the third radiator 302 to generate an IFA mode from the third free end I to the third grounding point G to support the Wi-Fi 2.4G frequency band. The fourth signal source 401 excites the fourth radiator 402 to generate an IFA mode from the fourth free end J to the fourth grounding point O to support the N78 frequency band. The fourth signal source 401 excites the fourth radiator 402 to generate a monopole mode from the fourth free end J to the fourth feeding point K and a dual-wave 3 / 4 wavelength mode of the third radiator 302 from the third free end I to the third grounding point G to support the Wi-Fi 5G frequency band.

[0132] In the embodiment of the present application, the positions of the third antenna unit 30 and the fourth antenna unit 40 can be interchanged. In addition, the positions of the first antenna module 100a and the second antenna module 100b can be interchanged.

[0133] In this application, the antenna supporting GPS-L1 (hereinafter referred to as L1 antenna) and the antenna supporting GPS-L5 (hereinafter referred to as L5 antenna) are designed separately, so that the GPS-L5 antenna and the GPS-L1 antenna do not affect each other. At the same time, the efficiency of GPS-L5 can reach 8dB, and the upper hemisphere energy accounts for more than 50%, which meets the usage requirements. GPS-L1 can achieve an efficiency of about -4.5dB and an upper hemisphere energy account for more than 50%, which provides a guarantee for accurate positioning. By designing the matching of the L5 antenna, the MHB+N78 antenna and the GPS-L5 antenna are not affected by each other; the switch series connection is used in the matching circuit of the MHB+N78 antenna, which can increase the series capacitance and facilitate the tuning of the B40 band.

[0134] 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: The electronic device comprises a first antenna module and a second antenna module which are independently arranged on the top of the electronic device, wherein the first antenna module comprises: a first antenna unit, the first antenna unit comprising a first signal source, a first radiator and a first matching circuit, the first radiator comprising a first grounding point, a first feeding point and a first free end arranged in sequence, the first signal source being electrically connected to the first feeding point and used to excite the first radiator to at least support a first GPS frequency band, the first matching circuit comprising a bandpass circuit, one end of the bandpass circuit being electrically connected to the first feeding point, the other end of the bandpass circuit being grounded, the bandpass circuit being in a band-blocking state for the first GPS frequency band, and the first grounding point being grounded; and A second antenna unit, wherein the second antenna unit comprises a second signal source and a second radiator, the second radiator comprises a second free end, a second feeding point and a second grounding point which are arranged in sequence, the second free end is coupled with the first free end through a gap, the second grounding point is grounded, the second signal source is electrically connected to the second feeding point, and is used to excite the second radiator to support a target frequency band, wherein the minimum frequency of the target frequency band is greater than the maximum frequency of the first GPS frequency band; wherein the passband circuit is in a passband state for the target frequency band; The second antenna module is located on a side of the first antenna unit that is away from the second antenna unit, and the first grounding point is located between the first free end and the second antenna module, and the second antenna module is used to support a second GPS frequency band.

2. The electronic device according to claim 1, wherein: The first matching circuit also includes a band-stop circuit, one end of the band-stop circuit is electrically connected to the first feeding point, the other end of the band-stop circuit is electrically connected to the first signal source, and the band-stop circuit is in a band-stop state for the target frequency band and in a band-pass state for the first GPS frequency band.

3. The electronic device according to claim 2, characterized in that: The band-stop circuit includes a first inductor element, one end of the first inductor element is electrically connected to the first feeding point, and the other end of the first inductor element is electrically connected to the first signal source.

4. The electronic device according to claim 1, wherein: The bandpass circuit includes a second inductance element, a third inductance element and a first capacitance element, one end of the second inductance element is electrically connected to the first feeding point, the other end of the second inductance element is electrically connected to one end of the first capacitance element, the other end of the first capacitance element is grounded, one end of the third inductance element is electrically connected to the first feeding point, and the other end of the third inductance element is grounded.

5. The electronic device according to claim 1, wherein: The first matching circuit also includes a second capacitor element, one end of which is electrically connected to the first feeding point, and the other end of the second capacitor element is grounded, and the second capacitor element is used to adjust the electrical length of the first radiator and conduct the target frequency band to ground.

6. The electronic device according to claim 1, wherein: The first signal source excites the first radiator to form a first resonance mode supporting the first GPS frequency band. The resonance current of the first resonance mode is distributed between the first free end and the first grounding point. The first resonance mode is a 1 / 4 wavelength mode of the first GPS frequency band.

7. The electronic device according to claim 1, wherein: The first signal source excites the first radiator to support the LB frequency band; the first matching circuit also includes a tuning circuit, and the equivalent capacitance of the tuning circuit to the LB frequency band is smaller than the equivalent capacitance of the tuning circuit to the first GPS frequency band.

8. The electronic device according to claim 1, wherein: The target frequency band includes the MB frequency band, the second signal source excites the second radiator to form a second resonance mode supporting the MB frequency band, the resonance current of the second resonance mode is distributed between the second ground point and the second free end, and the second resonance mode is a 1 / 4 wavelength mode of the MB frequency band.

9. The electronic device according to claim 1, wherein: The target frequency band also includes an HB frequency band. The second signal source excites the second radiator and the first radiator to form a third resonance mode supporting the HB frequency band. The resonance current of the third resonance mode is distributed between the second feeding point and the second free end and between the first free end and the first grounding point. The resonance current between the second feeding point and the second free end is in the same direction as the resonance current between the first free end and the first grounding point.

10. The electronic device according to claim 1, wherein: The target frequency band also includes a UHB frequency band. The second signal source excites the second radiator to form a fourth resonance mode supporting the UHB frequency band. The resonance current of the fourth resonance mode is distributed between the second feeding point and the second free end. The fourth resonance mode is a 1 / 4 wavelength mode of the UHB frequency band.

11. The electronic device according to any one of claims 1 to 10, characterized in that: The second antenna unit also includes a second matching circuit, one end of the second matching circuit is electrically connected to the second feeding point, the other end of the second matching circuit is electrically connected to the second signal source, the second matching circuit includes a switch switching branch Q2, the switch switching branch Q2 includes a switch unit and multiple switching branches, one end of the switch unit is electrically connected to the second feeding point, the other end of the switch unit is used to conduct at least one of the multiple switching branches, and the other ends of the multiple switching branches are grounded and / or electrically connected to the second signal source; the switch switching branch Q2 is used to switch the sub-band in the target frequency band.

12. The electronic device according to claim 11, characterized in that: The second matching circuit also includes a third capacitive element, one end of the third capacitive element is electrically connected to the second feeding point, the other end of the third capacitive element is electrically connected to the second signal source, the capacitance value of the third capacitive element is less than the first preset capacitance value, and the third capacitive element is used to tune the second radiator to support the MB frequency band.

13. The electronic device according to claim 11, characterized in that: The plurality of switching branches include at least one series branch, and one end of the series branch away from the switch unit is electrically connected to the second signal source; The target frequency band includes at least one HB frequency band. When the second antenna unit operates in the HB frequency band, the switch unit connects the second feeding point and at least one of the series branches. The series branch connected to the second feeding point includes a fourth capacitor element, and the capacitance value of the fourth capacitor element is greater than the second preset capacitance value, or the series branch connected to the second feeding point is a short-circuit branch.

14. The electronic device according to claim 11, characterized in that: The plurality of switching branches further include at least one parallel branch, one end of the parallel branch away from the switch unit is grounded, and the parallel branch includes an inductor element and / or a capacitor element.

15. The electronic device according to claim 11, characterized in that: The second matching circuit further includes a fifth capacitive element, one end of which is electrically connected to the second feeding point, and the other end of which is grounded, and the fifth capacitive element is used to adjust the electrical length of the second radiator.

16. The electronic device according to any one of claims 1 to 10, characterized in that: The second antenna unit further includes a sixth capacitor element, one end of which is electrically connected to the second ground point, and the other end of which is grounded, so that the second radiator can also serve as a detection electrode for adjusting the SAR value.

17. The electronic device according to any one of claims 1 to 10, characterized in that: The second antenna module includes a third antenna unit and a fourth antenna unit; The third antenna unit includes a third signal source and a third radiator, the third radiator includes a third grounding point, a third feeding point and a third free end arranged in sequence, the third grounding point is grounded, and the third signal source is electrically connected to the third feeding point, for stimulating the third radiator to support the second GPS frequency band and the first Wi-Fi frequency band; The fourth antenna unit includes a fourth signal source and a fourth radiator, the fourth radiator includes a fourth free end, a fourth feeding point and a fourth grounding point arranged in sequence, the fourth free end is coupled with the third free end through a gap, the fourth grounding point is grounded, and the fourth signal source is electrically connected to the fourth feeding point, so as to excite the fourth radiator to support the second Wi-Fi frequency band and the UHB frequency band.

18. The electronic device according to claim 17, characterized in that: The electronic device also includes a frame and a reference floor, the frame includes a top edge, a first side edge, a bottom edge and a second side edge connected in sequence, the reference floor is arranged in the area surrounded by the frame, the first radiator is arranged on the top edge to stimulate the generation of a transverse current mode on the reference floor, and the transverse current mode is a current mode in which the current direction is parallel to the top edge; a part of the second radiator is arranged on the top edge, and another part of the second radiator is arranged on the first side edge.

19. The electronic device according to claim 18, characterized in that: A portion of the third radiator is disposed on the top edge, another portion of the third radiator is disposed on the second side edge, and a feeding point of the third radiator is disposed on the top edge to stimulate a transverse current mode to be generated on the reference floor; the fourth radiator is located on the top edge.

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