WO2023109439A1 - Ensemble antenne, et dispositif électronique et son procédé de commande - Google Patents

Ensemble antenne, et dispositif électronique et son procédé de commande Download PDF

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Publication number
WO2023109439A1
WO2023109439A1 PCT/CN2022/133270 CN2022133270W WO2023109439A1 WO 2023109439 A1 WO2023109439 A1 WO 2023109439A1 CN 2022133270 W CN2022133270 W CN 2022133270W WO 2023109439 A1 WO2023109439 A1 WO 2023109439A1
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WO
WIPO (PCT)
Prior art keywords
matching
frequency band
radiator
point
sub
Prior art date
Application number
PCT/CN2022/133270
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English (en)
Chinese (zh)
Inventor
吴小浦
Original Assignee
Oppo广东移动通信有限公司
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Publication of WO2023109439A1 publication Critical patent/WO2023109439A1/fr

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands

Definitions

  • the present application relates to the technical field of communications, and in particular to an antenna assembly, an electronic device and a control method thereof.
  • the present application provides an antenna component, an electronic device and a control method for improving antenna performance stability and communication quality.
  • an antenna assembly provided by the present application includes:
  • the radiator includes a first ground terminal and an extension terminal, and a first feeding point and a matching point arranged between the first ground terminal and the extension terminal, and the first feeding point is located at the first between the ground terminal and the matching point;
  • one end of the first matching circuit is electrically connected to the matching point, and the other end of the first matching circuit is grounded;
  • a first feed source the first feed source is electrically connected to the first feed point, and the radiator between the first ground terminal and the matching point is used for excitation of the first feed source Transmit and receive a first radio frequency signal, and the radiator from the matching point to the extension end is used to transmit and receive a second radio frequency signal under the excitation of the first feed source, and the first radio frequency signal is connected to the second radio frequency signal. At least some of the frequency bands of the radio frequency signals overlap.
  • an electronic device in a second aspect, includes a frame and an antenna assembly, at least part of the antenna assembly is disposed in the space surrounded by the frame, and the frame includes a pair of opposite first sides and a pair of opposite second sides, a pair of said second sides are connected between a pair of said first sides, the length of said first side is greater than the length of said second side, The radiator is disposed on the first side, and the extension end is away from the second side relative to the first ground end.
  • a method for controlling an electronic device provided by the present application is applied to the electronic device, and the method includes:
  • the processor of the electronic device determines whether the detector detects whether the target distance of the radiator between the subject to be tested and the first ground terminal to the matching point is less than or equal to a preset distance threshold;
  • the processor of the electronic device controls the radiator between the matching point and the extension end to transmit and receive a target frequency band when the judgment result of the detector is yes;
  • the processor of the electronic device controls the radiator between the first ground terminal and the matching point to transmit and receive a target under the excitation of the first feed source when the judgment result of the detector is negative. frequency band; or, control the radiator between the first ground terminal and the matching point and the radiator between the matching point and the extension end to both transmit and receive target frequency bands.
  • the application provides an antenna assembly, electronic equipment and a control method.
  • the radiator of the antenna assembly includes a first ground, an extension end, a first feed point and a matching point, and the first feed point is located between the first ground end and the matching point. Between the matching points, one end of the first matching circuit is electrically connected to the matching point, the other end of the first matching circuit is grounded, the first feed source is electrically connected to the first feeding point, and the radiator between the first grounding end and the matching point Used to send and receive the first radio frequency signal under the excitation of the first feed source, and the radiator from the matching point to the extension end is used to receive and receive the second radio frequency signal under the excitation of the first feed source, wherein the first radio frequency signal and the second radio frequency At least part of the frequency bands of the signals overlap.
  • the matching point can continue to support the transmission and reception of this or these frequency bands, so as to improve the antenna performance stability and communication quality.
  • FIG. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a disassembled structure of the electronic device provided in FIG. 1;
  • FIG. 3 is a schematic structural diagram of the first antenna assembly provided by the embodiment of the present application.
  • Fig. 4 is a schematic structural diagram of an antenna form
  • Fig. 5 is a structural schematic diagram of another antenna form
  • Fig. 6 is the S11 curve diagram of the antenna form provided in Fig. 4 and Fig. 5 in free space and being held by hand;
  • FIG. 7 is a current distribution diagram of the LOOP mode of the antenna assembly shown in FIG. 3;
  • FIG. 8 is a schematic structural view of the antenna assembly shown in FIG. 7 installed in the frame of the electronic device;
  • Fig. 9 is the S11 curve diagram of the antenna assembly shown in Fig. 7 in free space and being held by hand;
  • Fig. 10 is an antenna efficiency diagram of the antenna assembly shown in Fig. 7;
  • FIG. 11 is a schematic structural diagram of a second antenna assembly provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural view of the antenna assembly shown in FIG. 11 installed in the frame of the electronic device;
  • FIG. 13 is a schematic structural diagram of the first matching circuit provided in the present application in the antenna assembly
  • Fig. 14 is a schematic structural diagram of the first detector provided in the electronic device provided by the present application.
  • Fig. 15 is a schematic diagram of the signal flow of the detector, the controller and the first switch circuit provided by the present application;
  • Fig. 16 is a schematic structural diagram of a second detector provided in the electronic device provided by the present application.
  • Fig. 17a is a schematic structural diagram of the first sub-radiator shown in Fig. 3 as a detector
  • Fig. 17b is a schematic structural diagram of the second sub-radiator shown in Fig. 3 as a detector
  • Fig. 17c is a schematic structural diagram of the first sub-radiator and the second sub-radiator shown in Fig. 3 as a detector;
  • Fig. 18 is a schematic structural diagram of the second sub-radiator in Fig. 11 as a detector
  • Fig. 19 is a schematic structural diagram of the first matching branch provided by the present application.
  • Fig. 20 is a schematic structural diagram of the second first matching branch provided by the present application.
  • Fig. 21 is a schematic structural diagram of the third first matching branch provided by the present application.
  • FIG. 22 is a schematic structural diagram of the second first matching circuit provided by the present application.
  • Fig. 23 is a schematic structural diagram of a third antenna assembly provided by an embodiment of the present application.
  • Fig. 24 is a schematic structural diagram of the first type of second matching branch provided by the present application.
  • Fig. 25 is a schematic structural diagram of the second type of second matching branch provided by the present application.
  • Fig. 26 is a schematic structural diagram of a third antenna assembly provided by an embodiment of the present application.
  • Fig. 27 is a schematic structural diagram of a fourth antenna assembly provided by an embodiment of the present application.
  • Fig. 28 is a flow chart of the first electronic device control method provided by the embodiment of the present application.
  • FIG. 29 is a flow chart of a second electronic device control method provided by an embodiment of the present application.
  • FIG. 1 is a schematic structural diagram of an electronic device 1000 provided in an embodiment of the present application.
  • the electronic device 1000 includes an antenna assembly 100 .
  • the antenna assembly 100 is used to send and receive radio frequency signals, wherein the radio frequency signals are transmitted as electromagnetic wave signals in the air medium, so as to realize the communication function of the electronic device 1000 .
  • the present application does not specifically limit the position of the antenna assembly 100 on the electronic device 1000 , and FIG. 1 is only an example.
  • the electronic device 1000 further includes a display screen 200 and a casing 300 that are closed and connected to each other.
  • the antenna assembly 100 may be disposed inside the housing 300 of the electronic device 1000 , or partially integrated with the housing 300 , or partially disposed outside the housing 300 .
  • the radiator of the antenna assembly 100 in FIG. 1 is integrated with the casing 300 .
  • the electronic device 1000 includes, but is not limited to, mobile phones, phones, tablet computers, personal computers, notebook computers, vehicle-mounted devices, smart earphones, smart watches, smart wearable devices, vehicle-mounted radars, and customer premise equipment (Customer Premise Equipment, CPE) and other devices capable of sending and receiving electromagnetic wave signals.
  • CPE Customer Premise Equipment
  • the thickness direction of the device 1000 is defined as the Z-axis direction.
  • the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other.
  • the direction indicated by the arrow is the positive direction.
  • the casing 300 includes a frame 310 and a rear cover 320 .
  • a middle plate 330 is formed in the frame 310 by injection molding, and a plurality of installation slots for installing various electronic devices are formed on the middle plate 330 .
  • the middle board 330 and the frame 310 together become the middle board 330 of the electronic device 1000.
  • the middle frame 340 and the rear cover 320 are closed, a receiving space is formed on both sides of the middle frame 340 .
  • One side (such as the rear side) of the frame 310 surrounds the periphery of the rear cover 320
  • the other side (such as the front side) of the frame 310 surrounds the periphery of the display screen 200 .
  • the electronic device 1000 also includes a circuit board 500, a battery 600, a camera module, a microphone, a receiver, a loudspeaker, a face recognition module, a fingerprint recognition module, etc., which can realize the basic functions of the mobile phone. , which will not be described in detail in this embodiment. Understandably, the above introduction to the electronic device 1000 is only an illustration of an environment in which the antenna assembly 100 is applied, and the specific structure of the electronic device 1000 should not be interpreted as a reference to the antenna assembly 100 provided in this application. limit.
  • the antenna assembly 100 includes but is not limited to the following embodiments.
  • the antenna assembly 100 includes a radiator 10 , a first matching circuit M1 and a first feed 30 .
  • the radiator 10 includes a first ground end 111 and an extension end 121 , and a first feeding point A and a matching point B disposed between the first ground end 111 and the extension end 121 .
  • the first feeding point A is located between the first ground terminal 111 and the matching point B.
  • the radiator 10 is a port for the antenna assembly 100 to send and receive radio frequency signals, wherein the radio frequency signals are transmitted in the form of electromagnetic wave signals in the air medium.
  • the present application does not specifically limit the shape of the radiator 10 .
  • the shape of the radiator 10 includes but is not limited to a strip shape, a sheet shape, a rod shape, a coating shape, a film shape, and the like.
  • radiators 10 are strip-shaped, and the first ground end 111 and the extension end 121 are two ends of the radiator 10 respectively.
  • the present application does not limit the extension trajectory of the radiator 10 .
  • the radiator 10 is linear.
  • the radiator 10 may also extend in a bent shape, a curve, or other tracks.
  • the above-mentioned radiator 10 may be a line with uniform width on the extension track, or may be a strip shape with a gradually changing width or a widened area.
  • the material of the radiator 10 is a conductive material, and specific materials include but are not limited to metals such as copper, gold, and silver, or alloys formed of copper, gold, and silver, or copper, gold, silver and other materials Alloys formed; graphene, or conductive materials formed by combining graphene with other materials; oxide conductive materials such as tin oxide and indium; carbon nanotubes and polymers to form hybrid materials, etc.
  • the first ground terminal 111 is grounded. It can be understood that the "ground” mentioned in this application refers to the electrical connection reference ground or the electrical connection reference ground system GND. GND1, GND2, and GND3 in FIG. 3 all represent the reference ground system GND.
  • the first ground terminal 111 is electrically connected to the reference ground system GND, and its electrical connection methods include but not limited to direct welding, or indirect electrical connection through coaxial lines, microstrip lines, conductive shrapnel, conductive glue, and the like.
  • the reference ground system GND may be an independent integral structure, or may be multiple independent but electrically connected structures.
  • the reference ground system GND provided in this application can be set inside the antenna assembly 100 or outside the antenna assembly 100 (for example, inside the electronic device 1000 or inside an electronic device of the electronic device 1000 ).
  • the antenna assembly 100 itself has a reference ground system GND.
  • Specific forms of the reference ground system GND include, but are not limited to, metal conductive plates, metal conductive layers formed inside flexible circuit boards, and rigid circuit boards.
  • the antenna assembly 100 itself does not have a reference ground system GND, and the first ground terminal 111 of the antenna assembly 100 is directly electrically connected or indirectly electrically connected to the reference ground of the electronic device 1000 through a conductive member. ground or the reference ground of the electronic devices in the electronic device 1000 .
  • the antenna assembly 100 is set on the electronic device 1000, which is a mobile phone, and the reference ground of the electronic device 1000 is the magnesium-aluminum metal alloy plate of the middle plate 330 of the mobile phone.
  • the first ground terminal 111 of the antenna assembly 100 is electrically connected to a magnesium-aluminum metal alloy plate.
  • Other structures of the antenna assembly 100 described later are electrically connected to the reference ground system GND, and reference can be made to any one of the above-mentioned implementation manners of being electrically connected to the reference ground system GND.
  • the first matching circuit M1 includes, but is not limited to, capacitors, inductors, capacitor-inductor combinations, switch tuning devices, and the like.
  • the first feed source 30 is electrically connected to the first feed point A.
  • the first feed source 30 is a port electrically connected to a radio frequency transceiver chip.
  • the first feed source 30 feeds the radio frequency signal emitted by the radio frequency transceiver chip into the radiator 10 through the first feeding point A, and the radio frequency signal can excite the radiator 10 to generate a resonant current to form a resonance, thereby The frequency band corresponding to the resonant current is supported.
  • the first feed 30 is used to excite the radiator 10 to at least send and receive electromagnetic wave signals in at least one of the MHB frequency band, UHB frequency band, Wi-Fi frequency band, LB frequency band, and GNSS frequency band.
  • the LB frequency band refers to a frequency band lower than 1000 MHz (excluding 1000 MHz).
  • the MHB frequency band refers to the frequency band of 1000MHz-3000MHz (including 1000MHz, excluding 3000MHz).
  • the UHB frequency band refers to the frequency band of 3000MHz-10000MHz (including 3000MHz).
  • the Wi-Fi frequency band includes but is not limited to at least one of Wi-Fi 2.4G, Wi-Fi 5G, Wi-Fi 6E, etc.
  • the full name of GNSS is Global Navigation Satellite System, and the Chinese name is Global Navigation Satellite System. System (Galileo satellite navigation system, Galileo) and regional navigation system, etc.
  • the radiator 10 between the first ground terminal 111 and the matching point B is defined as a first branch 13 in this application, and the first branch 13 is used for A first radio frequency signal is sent and received under the excitation of a feed source 30 .
  • the radiator 10 from the matching point B to the extension end 121 is defined as the second branch 14, and the second branch 14 is used to send and receive the second radio frequency under the excitation of the first feed 30 Signal.
  • at least part of the frequency bands of the first radio frequency signal and the second radio frequency signal overlap.
  • the frequency band of the second radio frequency signal is a part of the frequency band of the first radio frequency signal, or, the frequency band of the second radio frequency signal is the same as the frequency band of the first radio frequency signal, or, the first radio frequency signal A part of the frequency band of the first radio frequency signal overlaps with a part of the frequency band of the second radio frequency signal.
  • the frequency band is B3.
  • the matching The radiator 10 (the second branch 14 ) from point B to the extension end 121 can continue to support the transceiving of the B3 frequency band, so as to ensure that the antenna assembly 100 can always support the transceiving of the B3 frequency band and improve the stability of antenna performance and communication quality.
  • antennas are provided on the side of the frame 310 or other positions of the mobile phone. , for example, holding the Internet, playing games, etc. And when holding the frame 310 of the mobile phone, the hand covers part of the radiator 10 of the antenna assembly 100 , thus causing the antenna signal of the radiator 10 to drop sharply.
  • Figure 6 is the return loss curve of the antenna in Figure 4 and Figure 5 in free space and the antenna is held by hand
  • S1 represents the return loss curves of the antenna shown in Fig. 4 and Fig. 5 working in the B3 (1.71-1.88 GHz) frequency band in free space. It can be seen that the antenna can support the transmission and reception of the B3 frequency band in free space.
  • S2 represents the return loss curves of the antenna shown in Fig. 4 and Fig. 5 in the B3 (1.71-1.88 GHz) frequency band when the antenna is held by hand. It can be seen that when the antenna is held by hand, the antenna is biased from 1.8GHz to 1.2GHz, resulting in serious frequency deviation, resulting in the inability to support the transmission and reception of the B3 frequency band, and the antenna performance drops sharply.
  • the radiator 10 of the antenna assembly 100 is designed to include a first ground end 111, an extension end 121, and the first feeding point A and the matching point B, the first feeding point A is located between the first ground terminal 111 and the matching point B, one end of the first matching circuit M1 is electrically connected to the matching point B, The other end of the first matching circuit M1 is grounded, the first feed source 30 is electrically connected to the first feeding point A, and the radiator between the first ground terminal 111 and the matching point B 10 is used to transmit and receive the first radio frequency signal under the excitation of the first feed source 30, and the radiator 10 from the matching point B to the extension end 121 is used to transmit and receive the first radio frequency signal in the first feed source 30
  • the second radio frequency signal is sent and received under the excitation of , wherein at least part of the frequency bands of the first radio frequency signal and the second radio frequency signal overlap, so, for the overlapping frequency bands of the first radio frequency signal and the second radio frequency signal.
  • the radiator 10 (the second branch 14 ) from the matching point B to the extension end 121 reduces the transmission and reception efficiency of the coincident frequency band due to factors such as hand covering
  • the first ground terminal The radiator 10 (the first branch 13) between 111 and the matching point B can continue to support the transmission and reception of overlapping frequency bands, so as to ensure that the antenna assembly 100 can always support the transmission and reception of overlapping frequency bands, and improve antenna performance stability and communication quality.
  • the present application stimulates two different parts of one radiator 10 to transmit and receive the "coincidence frequency band” through a feed source. ", there is no need to set up multiple feed sources, multiple matching circuits electrically connected to the feed sources, etc., while realizing that the two radiators 10 support "coincident frequency band” transmission and reception, the antenna assembly 100 is also greatly reduced.
  • the overall volume is favorable for the application of the antenna assembly 100 in the miniaturized electronic device 1000 .
  • the present application does not specifically limit the overlapping frequency bands of the first radio frequency signal and the second radio frequency signal.
  • both the frequency band of the first radio frequency signal and the frequency band of the second radio frequency signal cover at least a target frequency band.
  • the frequency band of the first radio frequency signal may also include other frequency bands in addition to the target frequency band.
  • the frequency band of the second radio frequency signal may also include other frequency bands in addition to the target frequency band.
  • the frequency band of the second radio frequency signal may also be the target frequency band.
  • the target frequency band corresponds to the above-mentioned "overlapping frequency band".
  • the target frequency band is one of LB frequency band, MHB frequency band, UHB frequency band, Wi-Fi frequency band and GNSS frequency band. This application does not limit the specific frequency band of the target frequency band.
  • the target frequency bands include but are not limited to B3 frequency band, B7 frequency band, B41 frequency band, B42 frequency band, N3 frequency band, N7 frequency band, N41 frequency band, N78 frequency band, N79 frequency band, Wi-Fi 2.4G frequency band, Wi-Fi Any one of 5G frequency band, GPS-L1 frequency band, and GPS-L5 frequency band.
  • the present application not only protects the extension of the second branch 14 from the first branch 13, but both the second branch 14 and the first branch 13 can support the target frequency band. Extending multiple second branches 14 on the first branch 13 to support multiple target frequency bands also falls within the scope of protection of the present application. In other words, the present application protects at least one second branch 14 extending from the first branch 13 (the specific number of the second branch 14 is not limited), wherein the different second branches 14 The location is different.
  • the frequency bands supported by the different second branches 14 may be the same or different, for example, the first branch 13 supports the B3 frequency band, the B7 frequency band, and the B41 frequency band, and the three second branches 14 connected thereto may be respectively Support the B3 frequency band, B7 frequency band, and B41 frequency band, so that when the efficiency of the first branch 13 is reduced, use three of the second branch 14 to support the B3 frequency band, B7 frequency band, and B41 frequency band to improve antenna performance stability and communication quality.
  • the radiator 10 includes, but is not limited to, the conductive part of the frame 310, the radiator 10 of the frame 310 (the frame 310 serves as the radiator 10 of the antenna), and a bracket radiator located near the frame 310. body.
  • the bracket radiator is arranged in the electronic device 1000, including but not limited to the radiator 10 formed on a flexible circuit board (Flexible Printed Circuit board, FPC), through laser direct molding (Laser Direct Structuring, LDS) laser directly structuring the radiator 10, printing direct structuring (Print Direct Structuring, PDS) directly molding the radiator 10, the conductive sheet radiator 10, and the like.
  • FPC Flexible Printed Circuit board
  • LDS Laser Direct Structuring
  • PDS Print Direct Structuring
  • the present application does not specifically limit the specific structure of the radiator 10 .
  • the specific structure of the radiator 10 is illustrated by taking the radiator 10 as the radiator 10 of the frame 310 as an example.
  • the structure of the radiator 10 provided in this application includes but not It is limited to the following embodiments.
  • the radiator 10 includes a coupled first sub-radiator 11 and a second sub-radiator 12 .
  • the first sub-radiator 11 has the first ground terminal 111 and the first coupling terminal 112 .
  • the first feed point A is located between the first ground terminal 111 and the first coupling terminal 112 .
  • the second sub-radiator 12 has a second coupling end 122 and the extension end 121 .
  • a coupling gap 113 is formed between the second coupling end 122 and the first coupling end 112 .
  • the matching point B is located between the second coupling end 122 and the extension end 121 .
  • first sub-radiator 11 and the second sub-radiator 12 are capacitively coupled through the coupling slot 113 .
  • capacitively coupling means that an electric field is generated between the first sub-radiator 11 and the second sub-radiator 12, and the electric signal on the second sub-radiator 12 can be transmitted to the
  • the first sub-radiator 11 is used so that the first sub-radiator 11 and the second sub-radiator 12 can realize electrical signal conduction even when they are not in direct contact or direct connection.
  • the first sub-radiator 11 and the second sub-radiator 12 may be arranged in a straight line or substantially in a straight line (that is, there is a small tolerance in the design process).
  • the first sub-radiator 11 and the second sub-radiator 12 may also be arranged staggered in the extension direction to form an avoidance space.
  • the first branch 13 provided in this embodiment is provided with the coupling slot 113 , and the first branch 13 generates multiple resonance modes under the excitation of the first feed source 30 .
  • the first branch 13 supports at least two resonant modes, wherein the resonant current distribution of these resonant modes includes: the resonant current of the first resonant mode flows from the first ground terminal 111 to the coupling The slot 113 (the current can also be reversed); the resonance current of the second resonance mode flows from the first feeding point A to the coupling slot 113 (the current can also be reversed).
  • the above-mentioned resonance modes include but are not limited to 1/4 wavelength mode, 1/2 wavelength mode, 3/4 wavelength mode, 1 times wavelength mode and the like.
  • the second coupling end 122 and the matching point B may or may not generate resonance, when the second coupling When terminal 122 resonates to the matching point B, its resonance current flows from the matching point B to the coupling slot 113, and its corresponding wavelength modes include but not limited to 1/4 wavelength mode, 1/2 wavelength mode, 3/4 wavelength mode, 1 times wavelength mode, etc.
  • the stub between the second coupling end 122 and the matching point B acts as a capacitive load, similar to the second The coupling end 122 is loaded with capacitance, so that the frequency supported by the first branch 13 is shifted toward the low frequency.
  • the second coupling end 122 to the matching The stubs between the points B serve as capacitive loading to reduce the length of the radiator 10 .
  • the first ground terminal 111 to the coupling slot 113 working in the 1/4 wavelength mode can be understood as the effective electrical length from the first ground terminal 111 to the first coupling terminal 112 It is about 1/4 times the medium wavelength (wavelength in the medium) corresponding to the center frequency of the resonant mode.
  • This description is an explanation for the ease of understanding of the term, but it cannot be used as the first coupling between the first ground terminal 111 and the first coupling.
  • the length of end 112 is defined.
  • Other wavelength modes can also refer to the description of the 1/4 wavelength mode.
  • the radiator 10 By setting the radiator 10 to include the first sub-radiator 11 and the second sub-radiator 12 coupled to each other, wherein the first sub-radiator 11 is electrically connected to the first feed source 30, the The first feed source 30 feeds the radio frequency signal into the first sub-radiator 11 through the first feed point A, because the first sub-radiator 11 and the second sub-radiator 12 are capacitively coupled , the radio frequency signal of the first sub-radiator 11 can excite the second sub-radiator 12 to generate a current signal to generate more resonance modes, thereby increasing the number of frequency bands or frequency band width covered by the antenna assembly 100 .
  • the coupling slot 113 may not be provided on the radiator 10 .
  • first sub-radiator 11 and the second sub-radiator 12 are divided by the radiator 10 with the coupling slit 113 as the electric field strength point
  • first branch 13 and the The second branch 14 is divided by the radiator 10 with the matching point B as the electric field strength point.
  • the extension end 121 is the second ground end.
  • the extension end 121 (second ground end) is grounded.
  • the extension end 121 can be directly or indirectly connected to the magnesium-aluminum alloy middle plate 330 (the reference ground system GND) in the mobile phone through other electrical connections.
  • the radiator 10 (that is, the second branch 14 ) between the extension end 121 and the matching point B is excited by the first feed source 30 to send and receive the signal generated in the target frequency band.
  • the resonant current works in 1/2 wavelength mode.
  • the sum of the equivalent electrical length of the first matching circuit M1 and the electrical length of the second branch 14 is about 1/2 times the wavelength of the medium corresponding to the target frequency band, so that the resonance frequency is the target frequency band to generate the first a resonant mode.
  • the resonant mode generated by the radiator 10 between the second ground end (extended end 121 ) and the matching point B forms an electric field strength point D when transmitting and receiving the target frequency band.
  • the electric field strength point D is located between the matching point B and the second ground terminal (the extension terminal 121 ).
  • the electric field strength point D is close to or is a middle position of the second branch 14 .
  • the resonant current distribution between the extension end 121 and the matching point B includes: a part of the resonant current flows to the electric field strength point D through the extension end 121, and another part of the resonant current flows to the electric field through the matching point B Strong point D.
  • the resonant current distribution of the first resonant mode includes: a part of the resonant current flows from the first matching circuit M1 to the vicinity of the middle position of the second branch 14 through the matching point B, and another part of the resonant current flows from the The extension end 121 flows toward the middle position of the second branch 14 .
  • the flow direction of the resonant current can also be completely reversed, that is, part of the resonant current flows from the vicinity of the middle position of the second branch 14 to the first matching circuit M1 through the matching point B, and another part of the resonant current flows from the middle position of the second branch 14 to the first matching circuit M1. Near the middle position of the second branch 14 flows toward the extension end 121 . The intersection of the resonant currents of these two parts is the strong point of the electric field.
  • the working mode of the second stub 14 can be defined as LOOP mode.
  • the extension end 121 of the second branch 14 is grounded, and the first matching circuit M1 is designed so that the second branch The working mode on 14 is LOOP mode.
  • the second branch 14 is not easy to be held by the hand, so that the support of the target frequency band by the second branch 14 in various holding scenarios can be improved. stability.
  • the radiator 10 of the antenna assembly 100 is integrated with the frame 310 of the electronic device 1000, that is, the antenna assembly 100
  • the radiator 10 is the conductive frame 310 antenna. At least part of the antenna assembly 100 is disposed in the space surrounded by the frame 310 .
  • the radio frequency transceiver chip of the antenna assembly 100 is disposed on the circuit board 500 surrounded by the frame 310 .
  • the frame 310 of the electronic device 1000 includes a pair of opposite first sides 311 and a pair of opposite second sides 312 .
  • the pair of second sides 312 is connected between the pair of first sides 311 .
  • the length of the first side 311 is greater than the length of the second side 312 . That is, the pair of first sides 311 is a pair of long sides.
  • the pair of second sides 312 are a pair of short sides.
  • the radiator 10 is disposed on the first side 311 , and the extension end 121 is away from the second side 312 relative to the first ground end 111 .
  • the radiator 10 of the antenna assembly 100 is generally arranged at a position where the long side of the electronic device 1000 is close to the short side, that is, the position close to the main board 510 or the sub-board 530, wherein the main board 510, the battery compartment 520 and the sub-board 530 are arranged in sequence along the length direction of the electronic device 1000 .
  • the first branch 13 electrically connected to the first feed 30 is generally disposed on the circuit board 500. Nearby, for example, the first branch 13 is disposed at a position where the first side 311 is close to the second side 312 .
  • the second branch 14 that does not need to be directly electrically connected to the first feed source 30 is provided on the side of the first branch 13 away from the second side 312 , because the second branch 14 There is no need to be electrically connected to the first feed source 30, so the second branch 14 can be arranged at a position relatively far from the circuit board 500, for example, near the battery compartment 520, thus effectively utilizing the battery compartment 520 In the area near the frame 310 , the radiator 10 of the antenna assembly 100 is reasonably laid out to improve space utilization and improve the signal stability of the antenna assembly 100 .
  • the user When the user holds the electronic device 1000 horizontally to play games or watch videos, the user holds the short side and part of the long side of the electronic device 1000 with one or both hands (for example, within the dotted circle in FIG. 8 ). , the user's hands tend to cover part of the radiator 10 of the antenna assembly 100, such as the first branch 13 of the antenna assembly 100, causing the first branch 13 to be covered by the hand. Due to the impact of living, frequency deviation occurs, and the target frequency band cannot be supported.
  • the second branch 14 is controlled to work in the above-mentioned LOOP mode, because the electric field strength point on the second branch 14 is relatively
  • the node 13 is further away from the second side 312, so the electric field strength point on the second branch 14 is not easy to be covered by the hand when the screen is held horizontally, so that the second branch 14 can effectively support the target frequency band , and further improve the stability of the antenna assembly 100 supporting the target frequency band, and also improve the stability of the antenna assembly 100 supporting the target frequency band in a scene where the user holds the screen horizontally.
  • FIG. 9 is the return loss curve of the antenna assembly 100 in FIG. 8 in free space and the return loss when the antenna assembly 100 is held by hand Graph. Adjust the resonant frequency of LOOP mode to position B3, corresponding to the dotted circle in the figure.
  • S3 represents the return loss curve of the antenna assembly 100 shown in FIG. 8 working in the B3 (1.71-1.88 GHz) frequency band in free space. It can be seen that the antenna assembly 100 can support the transmission and reception of the B3 frequency band in free space.
  • S4 represents the return loss curve of the antenna assembly 100 shown in FIG. 8 in the B3 (1.71-1.88 GHz) frequency band in the state of being held by hand. It can be seen that when the antenna assembly 100 is held by the hand and the coupling gap 113 of the antenna assembly 100 is blocked, compared with the free space, the antenna assembly 100 in FIG. 8 is held by the hand. There is no frequency offset.
  • the second branch 14 of the antenna assembly 100 shown in FIG. 7 excites the LOOP mode After that, the average efficiency of the B3 frequency band is increased by about 9dB, which is a huge improvement. Understandably, the B3 frequency band is just an example, and the LOOP mode can be adjusted to any frequency band to improve performance.
  • the second branch 14 can also stimulate other modes that are not easy to be locked to death.
  • the extension end 121 is a free end. Wherein, the extension end 121 is spaced apart from the reference ground system GND or other metal segments.
  • the radiator 10 (that is, the second branch 14 ) between the extension end 121 and the matching point B is excited by the first feeder 30 to transmit and receive the target frequency band and generate a resonant current to work.
  • the sum of the equivalent electrical length of the first matching circuit M1 and the electrical length of the second branch 14 is about n/4 times the wavelength of the medium corresponding to the target frequency band, so that the resonance frequency is the target frequency band to generate the first a resonant mode.
  • the resonant current distribution of the first resonant mode includes: the resonant current flows from the first matching circuit M1 to the extension end 121 through the matching point B.
  • the flow direction of the resonant current can also be completely reversed, that is, the resonant current flows from the extension end 121 to the first matching circuit M1 through the matching point B.
  • the extension end 121 is a strong electric field point. When the electric field strength point is not covered by the hand, the above-mentioned first resonant mode and the corresponding resonant current distribution can be maintained on the second branch 14 to support the target frequency band.
  • the electric field strength point of the branch 14 is farther away from the second side 312, and can be located in the middle of the first side 311, so it can be better positioned in the horizontal screen. Avoid being covered by the hand in the holding scene, so that the second branch 14 can more effectively support the target frequency band, thereby improving the stability of the antenna assembly 100 supporting the target frequency band, and also improving the stability of the antenna assembly 100 in the user's horizontal direction.
  • the stability of the target frequency band is supported in the screen-holding scenario.
  • the radiator 10 includes the first sub-radiator 11 and the second sub-radiator 12 coupled to each other as an example, and the first matching in the antenna assembly 100 provided in this application is described in conjunction with the accompanying drawings.
  • the specific structure of the circuit M1 is described with an example.
  • the first matching circuit M1 includes a first switch circuit 21 and a first sub-matching circuit 22 .
  • One end of the first switch circuit 21 is electrically connected to the matching point B, the other end of the first switch circuit 21 is electrically connected to one end of the first sub-matching circuit 22, and the other end of the first sub-matching circuit 22 One end is grounded.
  • the radiator 10 from the matching point B to the extension end 121 (that is, the second branch 14) Generating a first resonance mode under the excitation of the first feed source 30 to transmit and receive the target frequency band.
  • the first matching circuit M1 is an optional circuit, and the ground impedance value of the first matching circuit M1 can be changed by turning on or off the first switch circuit 21, thereby tuning the matching point B
  • the radiator 10 that is, the second branch 14 ) to the extension end 121 supports the target frequency band.
  • the first switch can be controlled to The circuit 21 conducts the first sub-matching circuit 22 and the matching point B, so that the current on the first branch 13 goes to the ground through the first sub-matching circuit 22.
  • the first sub-matching circuit The sum of the equivalent electrical length of the matching circuit 22 and the electrical length from the matching point B to the extension end 121 and the n/4 wavelength mode (n is an odd number) or 1/2 wavelength mode or other wavelengths of the target frequency band Mode matching, so the first stub 13 can generate a resonance mode to support the target frequency band.
  • the present application does not limit the specific frequency band of the target frequency band, so the present application does not specifically limit the specific devices and device impedance values of the first sub-matching circuit 22 .
  • the first sub-matching circuit 22 is in a low-impedance state for the target frequency band, so that the resonant current whose resonant frequency is the target frequency band returns to ground through the first sub-matching circuit 22 .
  • the first sub-matching circuit 22 can be a capacitor or an inductor, it can be a series device of a capacitor and an inductor, it can also be a parallel device of a capacitor and an inductor, or it can be the above-mentioned
  • the series device is connected in parallel with a capacitor, or the above series device is connected in parallel with an inductor, or two of the above series devices are connected in parallel, or two of the above parallel devices are connected in series, and so on.
  • the resonant current is related to the wavelength mode of the first resonant mode.
  • the first resonant mode is n/4 wavelength mode (n is an odd number)
  • the resonant current can flow from the first sub-matching circuit 22 to the extension end 121 through the matching point B or from the extension end 121 flows to the first sub-matching circuit 22 through the matching point B, wherein the extension end 121 is a point of strong electric field (for example, the position of the strongest electric field).
  • the first resonant mode is the 1/2 wavelength mode
  • a part of the resonant current can flow from the first sub-matching circuit 22 to the position of the strongest electric field of the second branch 14 through the matching point B (approximately middle position), and then another part of the resonant current flows from the extension end 121 to the position of the strongest electric field (about the middle position) of the second branch 14, wherein the intersection point of the two parts of the resonant current is the electric field strength point.
  • the electric field strength point of the second branch 14 is located relatively far away from the first branch 13, when the first branch 13 is covered by the hand, and the electric field strength point on the second branch 14 When it is not covered by the hand, at this time, the first branch 13 cannot support the target frequency band due to frequency deviation, but the second branch 14 can effectively support the target frequency band, so that the antenna When the first branch 13 is covered by the hand, the assembly 100 can still effectively support the target frequency band, improving the antenna stability of the antenna assembly 100 .
  • the second branch 14 is caused by frequency deviation
  • the target frequency band cannot be supported, but the first branch 13 can effectively support the target frequency band, so that the antenna assembly 100 can still remain effective when the second branch 14 is covered by the hand.
  • the target frequency band is supported, and the antenna stability of the antenna assembly 100 is improved.
  • the impedance value of the first sub-matching circuit 22 and the radiator 10 from the matching point B to the extension end 121 (that is, the second branch 14) according to the requirements of the target frequency band length, when the first switch circuit 21 conducts the matching point B and the first sub-matching circuit 22, the equivalent electrical length of the first sub-matching circuit 22 and the equivalent electrical length of the second branch 14 are realized
  • the sum of the electrical lengths matches the n/4 wavelength mode (n is an odd number) or 1/2 wavelength mode or other wavelength modes of the target frequency band.
  • the equivalent electrical length of the first sub-matching circuit 22 and the The sum of the electrical lengths of the second branches 14 corresponds to n/4 times (n is an odd number) of the medium wavelength corresponding to the target frequency band, or 1/2 times the medium wavelength corresponding to the target frequency band, so that A first resonant mode is generated on the second branch 14 and a resonant current corresponding to the first resonant mode is generated to support the transmission and reception of the target frequency band.
  • the antenna assembly 100 further includes a controller 410 .
  • the first switch circuit 21 includes but not limited to transistors (transistors) and the like.
  • the controller 410 is electrically connected to the first switch circuit 21 .
  • the controller 410 is electrically connected to the control terminal of the first switch circuit 21 .
  • the efficiency of the target frequency band supported by the radiator 10 (the first branch 13 ) between the first ground terminal 111 and the matching point B by the controller 410 is less than the target preset efficiency , control the first switch circuit 21 to conduct the first sub-matching circuit 22 and the matching point B, so that the second stub 14 is grounded through the first sub-matching circuit 22 .
  • the sum of the equivalent electrical length of the first sub-matching circuit 22 and the equivalent electrical length of the second branch 14 is the n/4 wavelength mode (n is an odd number) corresponding to the target frequency band, or 1/4 2 wavelength mode matching, generating a resonant mode under the excitation of the first feed source 30 to transmit and receive the target frequency band.
  • the scenario where the efficiency of the target frequency band supported by the radiator 10 (the first branch 13 ) between the first ground terminal 111 and the matching point B is less than the target preset efficiency includes but It is not limited to the following embodiments: first, the first branch 13 is covered by the hand, specifically, since the first branch 13 is a conductor, when the hand touches the first branch 13, the The effective electrical length on the first branch 13 changes, and the resonant frequency of the corresponding resonant mode changes, that is, a frequency deviation occurs, so that the first branch 13 cannot resonate in the target frequency band, so, in the The efficiency of the target frequency band mentioned above drops sharply.
  • the controller 410 can control the first switch circuit 21 to turn on the matching point B and the first sub-matching circuit 22, so that the first resonant mode is generated on the second branch 14 and the second A resonant current corresponding to a resonant mode, to support the sending and receiving of the target frequency band.
  • the present application does not specifically limit the specific value of the target preset efficiency, and the target preset efficiency may be the frequency band supported by the resonance mode covers the efficiency lower limit value of the target frequency band.
  • the controller 410 can Controlling the first switch circuit 21 to conduct the matching point B and the first sub-matching circuit 22, so that the first resonant mode is generated on the second branch 14 and the resonant current corresponding to the first resonant mode is generated.
  • both the first branch 13 and the second branch 14 can generate a resonance mode supporting the target frequency band, so as to improve the transceiving efficiency of the target frequency band.
  • the controller 410 can be controlled to turn on the matching point B and the first sub-matching circuit 22, so that a first resonant mode is generated on the second branch 14 and a resonant current corresponding to the first resonant mode is generated, To support the sending and receiving of the target frequency band.
  • the antenna assembly 100 further includes a detector 420 .
  • the detector 420 is disposed adjacent to the radiator 10 , or the detector 420 is integrated with the radiator 10 .
  • the detector 420 is used to detect the target distance between the subject to be tested and the radiator 10 (the first branch 13 ) between the first ground terminal 111 and the matching point B.
  • the detector 420 is electrically connected to the controller 410 .
  • the controller 410 is configured to control the first switch circuit 21 to turn on the first sub-matching circuit 22 and the match point B above.
  • the preset distance threshold for example, 0-5 cm.
  • the detector 420 includes but is not limited to a SAR sensor.
  • the specific absorption rate refers to the mobile terminal electromagnetic wave energy absorption ratio, which is the electromagnetic power absorbed or consumed by human tissue per unit mass.
  • the subject to be tested is a living body, including but not limited to the head, hands, abdomen, legs and other parts of the human body, or other living bodies.
  • the hand is taken as an example for description.
  • the controller 410 controls the first switch circuit 21 to conduct through the first sub-matching circuit 22 and the matching point B.
  • the detector 420 may be a sensing electrode made of conductive material.
  • the specific detection principle is: the sensing electrode is a conductor.
  • the sensing electrode and the surface of the subject to be measured form a coupling capacitance, so that the surface charge of the sensing electrode changes, and then the approach of the subject to be measured and the distance between the subject to be measured and the sensing electrode are detected, namely target distance.
  • the installation position of the detector 420 includes but is not limited to the following embodiments: first, please refer to FIG. 14 , the detector 420 can be arranged near the first branch 13, wherein the detector 420 The number can be one, and its detection range covers the first stub 13 between the first ground terminal 111 and the matching point B. Of course, the number of detectors 420 can also be multiple, and the detection range of multiple detectors 420 covers the first branch 13 between the first ground terminal 111 and the matching point B. . The detector 420 of this embodiment detects whether there is a subject to be tested approaching the first branch 13 .
  • the second type please refer to FIG.
  • the number of the detector 420 is two, one detector 420 is set near the first branch 13, and its detection range covers from the first ground terminal 111 to The first branch 13 between the matching points B.
  • the other detector 420 is located near the second branch 14 , and its detection range covers the electric field strength point of the second branch 14 .
  • the detector 420 in this embodiment can not only detect whether a subject to be tested approaches the first branch 13 , but also detect whether a subject to be tested approaches the second branch 14 .
  • the configuration of the detector 420 includes but is not limited to the following: Embodiment: first, the detector 420 is an FPC electrode sheet. Please refer to FIG. 14 , when the first branch 13 is the conductive frame 310 , the detector 420 can be arranged in parallel with the first branch 13 and at the back cover 320 . Wherein, the rear cover 320 may be made of insulating material. The detector 420 can be pasted on the inner surface of the back cover 320 , embedded in the inside of the back cover 320 , or arranged on the outer surface of the back cover 320 .
  • the second type please refer to Fig. 17a-Fig.
  • the first sub-radiator 11 and/or the second sub-radiator 12 is to place the first sub-radiator 11 and/or the second sub-radiator 12 in a "suspension" position relative to the reference ground system GND, matching circuit and feed. State", the first sub-radiator 11 and/or the second sub-radiator 12 can be used as the detector 420 . Wherein, the first sub-radiator 11 and/or the second sub-radiator 12 are in a "suspension state" with respect to the reference ground system GND, matching circuit, and feed source, specifically connecting the radiator 10 Capacitors are set at connections to the reference ground system GND, matching circuits, and feed sources.
  • Figure 17a shows that capacitors are set between the first sub-radiator 11, the reference ground system GND1, and the first feed source 30.
  • the first sub-radiator 11 can be equivalent to the detector 420, so , it can detect the approach of the subject to be measured in the vicinity of the first sub-radiator 11 .
  • FIG. 17 b shows that capacitors are set between the second sub-radiator 12 , the reference ground system GND2 , and the first matching circuit M1 .
  • the second sub-radiator 12 may be equivalent to the detector 420 .
  • the device electrically connected to the matching point B of the first matching circuit M1 is a capacitor, no additional capacitor is required, so that the approach of the subject to be tested in the vicinity of the second sub-radiator 12 can be detected.
  • Figure 17c shows that capacitors are set between the first sub-radiator 11 and the reference ground system GND1 and the first feed 30, and between the second sub-radiator 12 and the reference ground system GND2, the second Capacitors are provided between a matching circuit M1 , and at this time, both the first sub-radiator 11 and the second sub-radiator 12 are equivalent to the detector 420 .
  • the approach of the subject to be measured in the vicinity of the first sub-radiator 11 and the approach of the subject to be measured in the vicinity of the second sub-radiator 12 can be detected.
  • the first embodiment and the second embodiment can be implemented in combination, for example, a detector 420 in the form of PFC is set in the vicinity of the first sub-radiator 11, and the second sub-radiator 1 is used as the detector 420 .
  • the second sub-radiator 12 can be used as the detector 420 .
  • the detector 420 is electrically connected to the controller 410 through an isolating device, wherein the isolating device is used to block the radio frequency signal and the conduction sensor detects the direct current signal (or small alternating current signal) generated by the approach of the subject to be tested, wherein , Isolation devices such as inductors, etc.
  • Isolation devices such as inductors, etc.
  • no additional sensor is required, and the original antenna assembly 100 is used to integrate the function of detecting the approach of the subject to be measured, thereby improving the integration degree of the antenna assembly 100 .
  • the working state of the first branch 13 Including but not limited to the following implementation methods:
  • the first ground terminal The radiator 10 (the first branch 13 ) between 111 and the matching point B generates a second resonance mode to at least support the target frequency band.
  • the first switch circuit 21 when the first switch circuit 21 conducts the first sub-matching circuit 22 and the matching point B, one of the resonant current distributions on the first branch 13 forms a resonance in the target frequency band, In this way, the first branch 13 can also target a frequency band. In short, when the first switch circuit 21 connects the first sub-matching circuit 22 and the matching point B, both the first branch 13 and the second branch 14 can support the target frequency band.
  • the controller 410 controls the first switch circuit 21 to turn on the first sub-matching circuit 22 and the matching Point B.
  • a second resonance mode with a resonant frequency of the target frequency band is generated on the first branch 13 and the second branch 13 14 generates a first resonant mode whose resonant frequency is the target frequency band, and both the first branch 13 and the second branch 14 support the target frequency band, thus increasing the efficiency of the antenna assembly 100 for the target frequency band .
  • the detector 420 detects that the target distance is less than or equal to the preset distance threshold, that is, when the first branch 13 is covered by the hand, the first switch circuit 21 remains turned on. , the second branch 14 can still support the target frequency band, and in this embodiment, the repeated switching control of the first switch circuit 21 is unnecessary.
  • the present application does not specifically limit which section of the radiator 10 of the first branch 13 supports the second resonant mode.
  • the distance between the second coupling end 122 and the matching point B The radiator 10 generates a second resonant mode whose resonant frequency is the target frequency band.
  • the second coupling The length of the radiator 10 between the end 122 and the matching point B may be equal to or similar to the length of the second branch 14 .
  • the target frequency band may be an MHB frequency band or a UHB frequency band.
  • the target frequency band can be adjusted within a frequency range.
  • the first sub-matching circuit 22 further includes a plurality of first matching branches 221 .
  • One ends of the plurality of first matching branches 221 are electrically connected to the other end of the first switch circuit 21 . That is, the first switch circuit 21 is a single-pole multi-throw switch.
  • the other ends of the plurality of first matching branches 221 are grounded, and the plurality of first matching branches 221 are used for tuning the size of the target frequency band.
  • the impedance values of each of the first matching branches 221 are different.
  • the multiple first matching branches 221 are multiple capacitive devices with different capacitance values.
  • the multiple first matching branches 221 are multiple inductance devices with different inductance values.
  • the first sub-matching circuit 22 includes a first adjustable capacitor 222, and the first adjustable capacitor 222 is used to tune the target The size of the band.
  • the first adjustable capacitor 222 is a capacitor with adjustable capacitance value. In this way, by adjusting the capacitance value of the capacitor, the impedance value of the first sub-matching circuit 22 can be adjusted, and then the first sub-matching circuit 22 can be adjusted.
  • the equivalent electrical length of the first sub-matching circuit 22 and the electrical length of the second branch 14 are further adjusted to further adjust the size of the target frequency band.
  • the first sub-matching circuit 22 can also be a combination of the above-mentioned first embodiment and the second embodiment, for example, referring to FIG. 21 , the first matching branch 221 includes the first adjustable capacitor 222.
  • the first ground terminal The radiator 10 (the first branch 13 ) between 111 and the matching point B does not support the target frequency band.
  • the first matching circuit M1 further includes a second switch circuit 23 and a second sub-matching circuit 24 .
  • One end of the second switch circuit 23 is electrically connected to the matching point B, the other end of the second switch circuit 23 is electrically connected to one end of the second sub-matching circuit 24, and the other end of the second sub-matching circuit 24 One end is grounded.
  • the radiator 10 between the first ground terminal 111 and the matching point B generates a second resonant mode to support at least the target frequency band.
  • the controller 410 controls the second switch circuit 23 to turn on the second sub-matching circuit 24 and the matching point when the target distance detected by the detector 420 is greater than the preset distance threshold. b.
  • the present application does not limit the specific frequency band of the target frequency band, so the present application does not specifically limit the specific device and device impedance value of the second sub-matching circuit 24 .
  • the second sub-matching circuit 24 is in a low-impedance state for the target frequency band, so that the resonant current whose resonant frequency is the target frequency band returns to ground through the second sub-matching circuit 24 .
  • the second sub-matching circuit 24 can be a capacitor or an inductor, it can be a series device of a capacitor and an inductor, it can also be a parallel device of a capacitor and an inductor, or it can be the above-mentioned
  • the series device is connected in parallel with a capacitor, or the above series device is connected in parallel with an inductor, or two of the above series devices are connected in parallel, or two of the above parallel devices are connected in series, and so on.
  • the resonant current of the second resonant mode flows to the first feeding point A through at least the second sub-matching circuit 24 and the matching point B, or, the resonant current of the second resonant mode Return to ground via the second sub-matching circuit 24 .
  • the present application does not specifically limit which segment on the first sub-radiator 11 supports the target frequency band.
  • the radiator 10 between the second coupling end 122 and the matching point B supports the second resonance mode
  • all the connections between the second coupling end 122 and the matching point B The length of the radiator 10 is different from the length of the radiator 10 of the second branch 14, so when the length of the radiator 10 between the second coupling end 122 and the matching point B is the same as the second
  • the equivalent electrical lengths of the first sub-matching circuit 22 and the second sub-matching circuit 24 are different, and the first sub-matching circuit 22 is different from the second sub-matching circuit 24.
  • the impedance values of the matching circuit 22 and the second sub-matching circuit 24 are different.
  • the first sub-matching circuit 22 and the second sub-matching circuit 24 are respectively two capacitors with different capacitance values pieces.
  • two capacitive devices with different capacitance values are switched to switch the first branch 13 or the The second stub 14 supports the target frequency band.
  • the working modes of the antenna assembly 100 provided in this embodiment include but are not limited to the following embodiments: first, the main working mode of the antenna assembly 100 is that the first branch 13 transmits and receives the target frequency band, at this time , the second switch circuit 23 turns on the second sub-matching circuit 24 and the matching point B, and the first switch circuit 21 turns off.
  • the controller 410 controls the second switch circuit 23 is turned off, and the first switch circuit 21 turns on the first sub-matching circuit 22 and the matching point B, so that the second branch 14 can transmit and receive the target frequency band.
  • the main working mode of the antenna assembly 100 is that the second branch 14 transmits and receives the target frequency band.
  • the first switch circuit 21 turns on the first sub-matching circuit 22 and the matching
  • the second switch circuit 23 is turned off.
  • the controller 410 controls the first switch circuit 21 to turn off. is turned on, and the second switch circuit 23 turns on the second sub-matching circuit 24 and the matching point B, so that the first branch 13 can transmit and receive the target frequency band.
  • the target frequency band may be an MHB frequency band or a UHB frequency band.
  • the second sub-matching circuit 24 by setting the second sub-matching circuit 24 as a circuit with adjustable impedance value, the target frequency band supported by the first branch 13 is adjustable within a frequency range.
  • the specific implementation manner of the second sub-matching circuit 24 reference may be made to the specific implementation manner of the first sub-matching circuit 22, which will not be repeated here.
  • the antenna assembly 100 further includes a second matching circuit M2.
  • One end of the second matching circuit M2 is electrically connected to the extension end 121 , and the other end of the second matching circuit M2 is grounded.
  • the second stub 14 is grounded through the second matching circuit M2, and the second matching circuit M2 is at least used for tuning the size of the target frequency band.
  • the size of the target frequency band can be adjusted by adjusting the impedance values of the first matching circuit M1 , the second matching circuit M2 , and the length of the second branch 14 .
  • the resonance frequency of the resonant mode can be tuned by adjusting the impedance values of the first matching circuit M1 and the second matching circuit M2 to support the required frequency band.
  • the second matching circuit M2 includes, but is not limited to, capacitors, inductors, capacitor-inductor combinations, switch tuning devices, and the like.
  • the second matching circuit M2 includes a third switch circuit 41 and a plurality of second matching branches 42 .
  • One end of each third switch circuit 41 is electrically connected to the extension end 121 .
  • the other end of the third switch circuit 41 is electrically connected to one end of the second matching branch 42 , or is in a suspended state, or is electrically connected to the reference ground system GND.
  • the other end of each second matching branch 42 is grounded.
  • the multiple second matching branches 42 are used to tune the size of the target frequency band.
  • the other end of the third switch circuit 41 is in a suspended state, that is, the other end of the third switch circuit 41 is spaced apart from the reference ground system GND or other conductive structures, which is equivalent to the aforementioned first The second embodiment of the two branches 14.
  • the first implementation manner of the second branch 14 and the second implementation manner of the second branch 14 can be selectively switched through the third switch circuit 41 .
  • the impedance values of each of the second matching branches 42 are different.
  • the multiple second matching branches 42 are multiple capacitive devices with different capacitance values.
  • the multiple second matching branches 42 are multiple inductance devices with different inductance values.
  • the second sub-matching circuit 24 includes a second adjustable capacitor 421, and the second adjustable capacitor 421 is used to tune the The size of the target band.
  • the second adjustable capacitor 421 is a capacitor with an adjustable capacitance value. In this way, by adjusting the capacitance value of the capacitor, the impedance value of the second matching circuit M2 can be adjusted, and then the impedance of the second matching circuit M2 can be adjusted. Effective electrical length, further adjusting the equivalent electrical length of the second matching circuit M2, the sum of the equivalent electrical length of the first matching circuit M1 and the electrical length of the second branch 14, and then adjusting the target frequency band the size of.
  • the second matching circuit M2 may also be a combination of the above-mentioned first embodiment and the second embodiment, for example, the second matching branch 42 includes the second adjustable capacitor 421 .
  • the arrangement of the second matching circuit M2 includes but not limited to the following embodiments: when the second matching When the circuit M2 has no switch circuit, the second matching circuit M2 can be directly arranged between the frame 310 and the magnesium-aluminum alloy middle plate 330 (the reference ground system GND) of the electronic device 1000, for example, the The second matching circuit M2 is an inductance device, which can be directly electrically connected between the frame 310 (the extension end 121 ) and the magnesium-aluminum alloy middle plate 330 (the reference ground system GND). When the second matching circuit M2 has a switch circuit, the second matching circuit M2 may be disposed on an FPC flexible circuit board, extend along the frame 310 and be electrically connected to the controller 410 on the main board.
  • the antenna assembly 100 further includes a third matching circuit M3.
  • One end of the third matching circuit M3 is electrically connected to the first feeding point A, and the other end of the third matching circuit M3 is electrically connected to the first feeding source 30 .
  • the third matching circuit M3 is used for tuning the frequency band of the first radio frequency signal.
  • the third matching circuit M3 is used to tune the frequency band of the first radio frequency signal to transmit and receive MHB frequency band, UHB frequency band and so on.
  • the third matching circuit M3 includes, but is not limited to, capacitors, inductors, capacitor-inductor combinations, switch tuning devices, and the like.
  • the antenna assembly 100 further includes a second feed source 50 .
  • the second feed source 50 is electrically connected to the matching point B.
  • the second feed source 50 is used for stimulating the second sub-radiator 12 to send and receive a third radio frequency signal.
  • the third radio frequency signal includes at least one of MHB frequency band, UHB frequency band, Wi-Fi frequency band, and LB frequency band.
  • the second sub-radiator 12 not only serves as the parasitic radiator 10 of the first sub-radiator 11, but also transmits and receives the second radio frequency under the excitation of the first feed source 30. Signal.
  • the second sub-radiator 12 is also independently electrically connected to the second feed source 50 , and the second feed source 50 can excite the second sub-radiator 12 to send and receive a third radio frequency signal.
  • the frequency band of the third radio frequency signal may be the same as or different from the frequency band of the second radio frequency signal.
  • the frequency band of the third radio frequency signal may be the same as the frequency band of the second radio frequency signal.
  • the first radio frequency signal includes an MHB frequency band, a UHB frequency band, and a Wi-Fi frequency band
  • the third radio frequency signal includes an LB frequency band.
  • the first feed source 30 and the first sub-radiator 11 are defined as a first antenna unit
  • the second feed source 50 and the second sub-radiator 12 are defined as a second antenna unit.
  • the first sub-radiator 11 is coupled to the second sub-radiator 12, that is, the first antenna unit and the second antenna unit have the same aperture, so that the first sub-radiator 11 and the second sub-radiator 12 can be multiplexed with each other, that is, the first feed source 30 can excite the first sub-radiator 11 and the second sub-radiator 12 to generate a resonant current, and the second feed source 50 can excite the first sub-radiator 11
  • the sub-radiator 11 and the second sub-radiator 12 generate a resonant current. In this way, the number of supported frequency bands can be increased, the bandwidth can be widened, and the overall size of the radiator 10 can be reduced, which is beneficial for forming in extremely limited space.
  • Inside the electronic device 1000 Inside the electronic device 1000 .
  • the frequency band of the third radio frequency signal is the LB frequency band.
  • the resonant current between the second coupling end 122 and the extension end 121 operates in a 1/8-1/4 wavelength mode.
  • the resonant current between the second coupling end 122 and the extension end 121 operates in a 1/4 wavelength mode, so that the length between the second coupling end 122 and the extension end 121 is relatively short and can Work in the fundamental mode with higher efficiency (1/4 wavelength mode), so that the supported frequency bands have higher efficiency.
  • the first matching circuit M1 is capacitively loaded, for example, the first matching circuit M1 is a capacitor, or adjusting the impedance of the second matching circuit M2 Impedance value, so that the second matching circuit M2 is capacitively loaded, for example, the second matching circuit M2 is a capacitor, which can make the frequency band supported by the second branch 14 shift toward the low frequency direction, so that the The length of the radiator 10 between the second coupling end 122 and the extension end 121 can be further shortened, for example, the length of the radiator 10 between the second coupling end 122 and the extension end 121 can be shortened to the 1/8 wavelength mode corresponding to the resonant frequency.
  • the frequency band of the third radio frequency signal is at least one of MHB frequency band, UHB frequency band, and Wi-Fi frequency band.
  • the frequency bands supported by the second feed source 50 include MHB frequency band, UHB frequency band, Wi-Fi frequency band, and LB frequency band.
  • the length of the second branch 14 matches the 1/8-1/4 wavelength mode of the LB frequency band
  • the second branch 14 transmits and receives the MHB frequency band, UHB frequency band, and Wi-Fi frequency band
  • the resonant current between the end 122 and the extension end 121 operates in a 3/4 wavelength mode corresponding to the resonant frequency.
  • the resonant current between the second coupling end 122 and the extension end 121 can work at a resonant frequency corresponding to 1/4 wavelength mode, 1/2 wavelength mode, 3/4 wavelength mode, 1 times wavelength mode.
  • the antenna assembly 100 further includes a fourth matching circuit M4, one end of the fourth matching circuit M4 is electrically connected to the matching point B, and the other end of the fourth matching circuit M4 is electrically connected to The second feed source 50 is connected, and the fourth matching circuit M4 is used for tuning the frequency band of the third radio frequency signal.
  • the fourth matching circuit M4 is used to tune the frequency band of the third radio frequency signal to transmit and receive the LB frequency band and the like.
  • the fourth matching circuit M4 includes, but is not limited to, capacitors, inductors, capacitor-inductor combinations, switch tuning devices, and the like.
  • the present application also provides a method for controlling the electronic device 1000, which is applied to the electronic device 1000 described in any one of the above-mentioned implementation manners, please refer to FIG. 28 , the method includes:
  • the processor of the electronic device 1000 determines that the detector 420 detects the radiator 10 (the first branch 13 ) is less than or equal to the preset distance threshold.
  • the processor of the electronic device 1000 includes but not limited to the controller 410 of the antenna assembly 100, or the central processing unit of the electronic device 1000, the central processing unit is electrically connected to the control unit of the antenna assembly 100 device 410.
  • the detector 420 detects the target distance between the subject to be tested and the radiator 10 (the first branch 13 ) between the first ground terminal 111 and the matching point B. Relevant descriptions will not be repeated here.
  • the detector 420 sends the detected electrical signal (the electrical signal has a one-to-one mapping relationship with the target distance) to the processor, and the processor compares the electrical signal representing the target distance with the electrical signal representing a preset distance threshold.
  • the processor compares the electrical signal representing the target distance to be less than or equal to the electrical signal representing the preset distance threshold, it means that the first branch 13 is covered by the hand, and at this time, the processor sends a signal to the The first switch circuit 21 , the first switch circuit 21 is turned on, so that the first sub-matching circuit 22 is electrically connected to the matching point B.
  • the radiator 10 that is, the second branch 14 ) between the extension end 121 and the matching point B operates at 1/2 wavelength mode (LOOP mode) or 1/4 wavelength mode.
  • the sum of the equivalent electrical length of the first matching circuit M1 and the electrical length of the second stub 14 is about 1/2 or 1/4 times the wavelength of the medium corresponding to the target frequency band, so that at the resonant frequency A first resonance mode is generated for the target frequency band, so that the second branch 14 can transmit and receive the target frequency band.
  • the electric field strength point on the second branch 14 is relatively far away from the first branch 13, the electric field strength point on the second branch 14 is not easily blocked by hands, so that the second branch 14 can effectively support the target frequency band , and further improve the stability of the antenna assembly 100 supporting the target frequency band, and also improve the stability of the antenna assembly 100 supporting the target frequency band in the scene of the user holding it.
  • the processor of the electronic device 1000 controls the radiator 10 between the first ground terminal 111 and the matching point B (the first Branch 13) Transmitting and receiving the target frequency band under the excitation of the first feed source 30; or, controlling the radiator 10 between the first ground terminal 111 and the matching point B and the matching point B to The radiators 10 between the extension ends 121 all transmit and receive target frequency bands.
  • the processor compares the electrical signal representing the target distance is greater than the electrical signal representing the preset distance threshold, it means that the first branch 13 is not covered by the hand, and the first sub-matching circuit 22 is electrically connected to To the matching point B, when both the first branch 13 and the second branch 14 can support the target frequency band, the processor sends a signal to the first switch circuit 21, so that the first The sub-matching circuit 22 is electrically connected to the matching point B, and the radiator 10 (that is, the second branch 14 ) between the extension end 121 and the matching point B is at the end of the first feed source 30 Under excitation, the resonant current generated by transmitting and receiving the target frequency band works in 1/2 wavelength mode (LOOP mode) or 1/4 wavelength mode.
  • LOOP mode 1/2 wavelength mode
  • 1/4 wavelength mode 1/4 wavelength mode
  • the sum of the equivalent electrical length of the first matching circuit M1 and the electrical length of the second stub 14 is about 1/2 or 1/4 times the wavelength of the medium corresponding to the target frequency band, so that at the resonant frequency A first resonance mode is generated for the target frequency band, so that the second branch 14 can transmit and receive the target frequency band.
  • the processor sends a signal to the first switch circuit 21, and the second branch 14 can also support the target frequency band.
  • a switch circuit 21 is turned on, so that the first sub-matching circuit 22 is electrically connected to the matching point B, and both the first branch 13 and the second branch 14 can generate resonance at the target frequency band mode to send and receive the target frequency band.
  • a method for controlling electronic equipment 1000 provided in the present application is to determine whether the detector 420 detects whether the target distance between the subject to be tested and the radiator 10 between the first ground terminal 111 and the matching point B is is less than or equal to the preset distance threshold, and when the judgment result of the detector 420 is yes, control the transmitting and receiving target frequency band of the radiator 10 between the matching point B and the extension end 121, according to the detector 420 When the judgment result of 420 is no, control the radiator 10 between the first ground terminal 111 and the matching point B to transmit and receive the target frequency band under the excitation of the first feed source 30; or, control the The radiator 10 between the first ground terminal 111 and the matching point B and the radiator 10 between the matching point B and the extension end 121 both transmit and receive target frequency bands, so as to be held in the user's hand.
  • the electronic device 1000 When holding the electronic device 1000, it can intelligently detect whether the user's hand covers the first branch 13, and intelligently switch to the second branch 14 when the user's hand covers the first branch 13. Transmitting and receiving the target frequency band, or making the first branch 13 and the second branch 14 both transmit and receive the target frequency band, thereby improving the stability of the electronic device 1000 supporting the target frequency band, and also improving the stability of the electronic device 1000 in the user's grip.
  • the stability of the target frequency band is supported in the scene.
  • the detector 420 of the electronic device 1000 detects whether the target distance between the subject to be tested and the radiator 10 between the first ground terminal 111 and the matching point B is Before being less than or equal to the preset distance threshold, the method also includes:
  • the processor of the electronic device 1000 identifies whether the electronic device 1000 is in a horizontal screen state.
  • the user When the user holds the electronic device 1000 horizontally to play games or watch videos, when the user holds the short side and part of the long side of the electronic device 1000 with one or both hands (for example, within the dotted circle in FIG. 8 ) , the user's hands tend to cover part of the radiator 10 of the antenna assembly 100, such as the first branch 13 of the antenna assembly 100, causing the first branch 13 to be covered by the hand Due to the influence of frequency deviation, the target frequency band cannot be supported.
  • the electronic device 1000 includes an orientation sensor such as a gyroscope, and the orientation sensor is used to identify whether the electronic device 1000 is in a landscape orientation.
  • the orientation sensor sends the detection result to the processor of the electronic device 1000 in the form of an electrical signal.
  • the detector 420 detects whether the first branch 13 is covered by the subject to be tested.
  • the detector 420 detects whether the first branch 13 is covered by the subject to be tested.
  • the user intelligently switch to the second branch 14 to transmit and receive the target frequency band, or make the first branch 13 and the second branch 14 both transmit and receive the target frequency band , and then when the user holds the electronic device 1000 horizontally to play games or watch videos, the stability of the target frequency band supported by the electronic device 1000 is improved, and the antenna of the electronic device 1000 is also improved when the user holds the electronic device 1000 horizontally. Signal stability.
  • the detector 420 is controlled to detect the target distance between the subject to be tested and the radiator 10 between the first ground terminal 111 and the matching point B, so as to improve The detection efficiency of the detector 420 does not require real-time detection by the detector 420, saving power and reducing processor resource occupation.
  • the processor of the electronic device 1000 judges that the detector detects the radiator 20 between the subject to be tested and the first ground terminal 111 to the matching point B Whether the target distance is less than or equal to the preset distance threshold; the processor of the electronic device 1000 controls the radiation between the matching point B and the extension end 121 according to the detection result of the detector.
  • the body 10 transmits and receives the target frequency band; the processor of the electronic device 1000 controls the radiator 10 between the first ground terminal 111 and the matching point B when the detection result of the detector is negative.
  • the target frequency band for transmitting and receiving under the excitation of the first feed source 30; or, controlling the radiator 10 between the first ground terminal 111 and the matching point B and the distance between the matching point B and the extension end 121 The radiators 10 in between all transmit and receive the target frequency band, when the radiator 10 between the first ground terminal 111 and the matching point B has reduced transceiving efficiency due to hand covering and other factors or cannot support the target frequency band
  • the radiator 10 from the matching point B to the extension end 121 can continue to support the transmitting and receiving of the target frequency band, so as to improve antenna performance stability and communication quality.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Support Of Aerials (AREA)

Abstract

La présente invention concerne un ensemble antenne, et un dispositif électronique et son procédé de commande, l'ensemble antenne comprenant un radiateur, un premier circuit d'adaptation et une première source d'alimentation. Le radiateur comprend une première extrémité de masse, une extrémité d'extension et un premier point d'alimentation et un point d'adaptation qui sont disposés entre la première extrémité de masse et l'extrémité d'extension, le premier point d'alimentation étant situé entre la première extrémité de masse et le point d'adaptation. Une extrémité du premier circuit d'adaptation est électriquement connectée au point d'adaptation, et l'autre extrémité du premier circuit d'adaptation est mise à la terre. La première source d'alimentation est électriquement connectée au premier point d'alimentation, le radiateur de la première extrémité de masse au point d'adaptation est utilisé pour émettre et recevoir un premier signal radiofréquence sous l'excitation de la première source d'alimentation, et le radiateur du point d'adaptation à l'extrémité d'extension est utilisé pour émettre et recevoir un second signal radiofréquence sous l'excitation de la première source d'alimentation, la bande de fréquence du premier signal radiofréquence chevauchant au moins partiellement celle du second signal radiofréquence. L'ensemble antenne, et le dispositif électronique et son procédé de commande fournis par la présente invention peuvent améliorer la stabilité de performance d'antenne et la qualité de communication.
PCT/CN2022/133270 2021-12-17 2022-11-21 Ensemble antenne, et dispositif électronique et son procédé de commande WO2023109439A1 (fr)

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CN202111555965.3A CN116266668A (zh) 2021-12-17 2021-12-17 天线组件、电子设备及其控制方法
CN202111555965.3 2021-12-17

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US20100035567A1 (en) * 2008-08-06 2010-02-11 Samsung Electronics Co. Ltd. Antenna for mobile terminal and method for changing radiation pattern using the same
US20180248253A1 (en) * 2016-03-18 2018-08-30 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Electronic device
CN109638455A (zh) * 2018-12-12 2019-04-16 维沃移动通信有限公司 天线结构及通信终端
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