WO2023000733A1 - Structure de mise à la masse de dispositif d'antenne, dispositif d'antenne et appareil électronique - Google Patents

Structure de mise à la masse de dispositif d'antenne, dispositif d'antenne et appareil électronique Download PDF

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Publication number
WO2023000733A1
WO2023000733A1 PCT/CN2022/087940 CN2022087940W WO2023000733A1 WO 2023000733 A1 WO2023000733 A1 WO 2023000733A1 CN 2022087940 W CN2022087940 W CN 2022087940W WO 2023000733 A1 WO2023000733 A1 WO 2023000733A1
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WO
WIPO (PCT)
Prior art keywords
circuit module
antenna
antenna radiator
electrically connected
conductive member
Prior art date
Application number
PCT/CN2022/087940
Other languages
English (en)
Chinese (zh)
Inventor
张彩文
Original Assignee
Oppo广东移动通信有限公司
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Filing date
Publication date
Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2023000733A1 publication Critical patent/WO2023000733A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith

Definitions

  • the present application relates to the technical field of communication, and in particular to a grounding structure of an antenna device, the antenna device and electronic equipment.
  • electronic devices such as smartphones can achieve more and more functions, and more and more antenna radiators are installed inside electronic devices.
  • Tuning circuits, matching circuits, and frequency modulation circuits that are electrically connected to antenna radiators
  • circuit structures such as circuits, isolation circuits, and filter circuits.
  • the present application provides a grounding structure of an antenna device, the antenna device and electronic equipment.
  • the antenna device can be grounded through the circuit module of the grounding structure without being limited to the installation position of the circuit board.
  • the present application provides a grounding structure of an antenna device, including:
  • an insulating substrate including a first surface and a second surface opposite to each other;
  • a first conductive member disposed on the first surface, and the first conductive member is used to electrically connect with the antenna radiator;
  • a second conductive element disposed on the second surface, and the second conductive element is used to electrically connect to the ground plane;
  • a circuit module the insulating substrate carries the circuit module, the first end of the circuit module is electrically connected to the first conductive member, the second end of the circuit module is electrically connected to the second conductive member, and the The antenna radiator is grounded through the circuit module.
  • the present application also provides an antenna device, including:
  • a grounding structure includes an insulating substrate, a first conductive member, a second conductive member and a circuit module, the insulating substrate carries the circuit module, the insulating substrate includes a first surface and a second surface oppositely arranged, The first conductive element is arranged on the first surface, and the second conductive element is arranged on the second surface; the first conductive element is electrically connected to the antenna radiator, and the second conductive element is connected to the antenna radiator.
  • the ground plane is electrically connected, the first end of the circuit module is electrically connected to the first conductive member, the second end of the circuit module is electrically connected to the second conductive member, and the antenna radiator passes through the circuit Module ground.
  • the present application also provides an electronic device, including an antenna device, and the antenna device includes:
  • a grounding structure includes an insulating substrate, a first conductive member, a second conductive member and a circuit module, the insulating substrate carries the circuit module, the insulating substrate includes a first surface and a second surface oppositely arranged, The first conductive element is arranged on the first surface, and the second conductive element is arranged on the second surface; the first conductive element is electrically connected to the antenna radiator, and the second conductive element is connected to the antenna radiator.
  • the ground plane is electrically connected, the first end of the circuit module is electrically connected to the first conductive member, the second end of the circuit module is electrically connected to the second conductive member, and the antenna radiator passes through the circuit Module ground.
  • FIG. 1 is a schematic diagram of a first structure of an antenna device provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a second structure of an antenna device provided by an embodiment of the present application.
  • FIG. 3 is a first structural schematic diagram of the grounding structure shown in FIG. 1 .
  • FIG. 4 is a schematic diagram of a third structure of an antenna device provided by an embodiment of the present application.
  • FIG. 5 is a structural schematic diagram of the grounding structure shown in FIG. 4 .
  • FIG. 6 is a schematic diagram of a second structure of the grounding structure shown in FIG. 1 .
  • FIG. 7 is a schematic structural comparison diagram of an antenna device including the ground structure shown in FIG. 6 and an antenna device not including the ground structure shown in FIG. 6 .
  • FIG. 8 is a schematic diagram of a comparison of standing wave ratios between an antenna device including the ground structure shown in FIG. 6 and an antenna device not including the ground structure shown in FIG. 6 .
  • FIG. 9 is a schematic diagram of a third structure of the grounding structure shown in FIG. 1 .
  • FIG. 10 is a schematic structural comparison diagram of an antenna device including the ground structure shown in FIG. 9 and an antenna device not including the ground structure shown in FIG. 9 .
  • Fig. 11 is a schematic diagram of a comparison of the standing wave ratio between the antenna device including the ground structure shown in Fig. 9 and the antenna device not including the ground structure shown in Fig. 9 .
  • FIG. 12 is a schematic diagram of a fourth structure of the grounding structure shown in FIG. 1 .
  • FIG. 13 is a schematic diagram of structural comparison between an antenna device including the ground structure shown in FIG. 12 and an antenna device not including the ground structure shown in FIG. 12 .
  • FIG. 14 is a schematic diagram of a comparison of the standing wave ratio between the antenna device including the ground structure shown in FIG. 12 and the antenna device not including the ground structure shown in FIG. 12 .
  • FIG. 15 is a schematic diagram of a first structure of an electronic device provided by an embodiment of the present application.
  • FIG. 16 is a schematic diagram of a second structure of an electronic device provided by an embodiment of the present application.
  • An embodiment of the present application provides an antenna device, which can implement a wireless communication function.
  • the antenna device can transmit Wireless Fidelity (Wi-Fi) signals, Global Positioning System (GPS) signals, third-generation mobile communication technology (3rd-Generation, 3G for short), fourth-generation Mobile communication technology (4th-Generation, referred to as 4G), fifth-generation mobile communication technology (5th-Generation, referred to as 5G), near field communication (Near field communication, referred to as NFC) signal, Bluetooth signal, ultra-wideband communication signal, etc.
  • Wi-Fi Wireless Fidelity
  • GPS Global Positioning System
  • 3rd-Generation 3rd-Generation, 3G for short
  • fourth-generation Mobile communication technology (4th-Generation, referred to as 4G
  • 5G fifth-generation mobile communication technology
  • NFC near field communication
  • Bluetooth signal Bluetooth signal
  • ultra-wideband communication signal ultra-wideband communication signal
  • FIG. 1 is a schematic structural diagram of a first type of antenna device provided by an embodiment of the present application.
  • the antenna device 100 may include an antenna radiator 110 , a feed 120 , a ground structure 130 and a ground plane 140 .
  • the feed source 120 can be directly or indirectly electrically connected to the antenna radiator 110, and the feed source 120 can provide a radio frequency signal to the antenna radiator 110, and the radio frequency signal can stimulate the antenna radiator 110 to transmit wireless signals, such as but not limited to transmission of 3G, 4G, 5G, GPS, Wi-Fi, NFC signals.
  • the ground plane 140 is used to form a common ground.
  • the ground plane 140 may be formed by electronic devices, conductors in the antenna device 100 , printed lines or metal printed layers, and the like.
  • the ground plane 140 may be disposed on the circuit board of the electronic device, the ground plane 140 may also be formed on the middle frame of the electronic device, or the ground plane 140 may also be formed through a metal back shell.
  • ground plane 140 is only an example of the formation method of the ground plane 140, and it is not limited thereto. Other methods for forming the ground plane 140 are within the protection scope of the embodiment of the present application. Not specifically limited.
  • the antenna radiator 110 may transmit wireless signals.
  • the antenna radiator 110 may be directly or indirectly electrically connected to the feed source 120 , for example, an electrical connection point 111 may be provided on the antenna radiator 110 , and the feed source 120 may be electrically connected to the antenna radiator 110 through the electrical connection point 111 .
  • the antenna radiator 110 can also be directly or indirectly electrically connected to the ground plane 140 through the ground structure 130.
  • a ground point 112 can be set on the antenna radiator 110
  • a ground terminal (not shown in FIG. 1 ) can be set on the ground plane 140.
  • the structure 130 may be electrically connected to the ground point 112 and the ground terminal, respectively.
  • the antenna radiator 110 may be grounded through one or more ground structures 130 .
  • the antenna device 100 may be grounded through a ground structure 130 .
  • FIG. 2 is a schematic diagram of the second structure of the antenna device provided by the embodiment of the present application.
  • the antenna radiator 110 can be grounded through multiple ground structures 130, for example, the antenna radiator 110 is grounded through two ground structures 130 in FIG. Signal.
  • the ground structure 130 can be electrically connected to the antenna radiator 110 and the ground plane 140 respectively, so that the antenna radiator 110 can be grounded through the ground structure 130 .
  • FIG. 3 is a schematic diagram of a first structure of the grounding structure shown in FIG. 1 .
  • the ground structure 130 may include an insulating substrate 131 , a first conductive member 132 , a second conductive member 133 and a circuit module 134 .
  • the insulating substrate 131 may include a first surface 1311 and a second surface 1312 oppositely disposed, the first surface 1311 may be disposed close to the antenna radiator 110 , and the second surface 1312 may be disposed close to the ground plane 140 .
  • the first surface 1311 and the second surface 1312 can be insulated from each other.
  • the insulating substrate 131 may be a dielectric substrate.
  • the dielectric substrate can be made of polytetrafluoroethylene (FR4), and of course, the dielectric substrate can also be made of other materials.
  • FR4 polytetrafluoroethylene
  • the embodiment of the present application does not limit the specific structure of the insulating substrate 131 .
  • the first conductive member 132 may be disposed on the first surface 1311 , and one end of the first conductive member 132 may be electrically connected to the antenna radiator 110 , for example, electrically connected to the ground point 112 on the antenna radiator 110 . The other end of the first conductive member 132 can be electrically connected to the first end n of the circuit module 134 .
  • the ground structure 130 may include one or more first conductive elements 132 , for example, the ground structure 130 in FIG. 3 includes two first conductive elements 132 . Wherein, one end of each first conductive element 132 can be electrically connected to the antenna radiator 110 , and the other end of each first conductive element 132 can be electrically connected to the first terminal n of the circuit module 134 .
  • the antenna radiator 110 When the antenna radiator 110 is electrically connected to the circuit module 134 through a plurality of first conductive members 132, the electrical contact area between the antenna radiator 110 and the circuit module 134 is larger, and the electrical connection between the antenna radiator 110 and the circuit module 134 is stable. Sex is better.
  • the first conductive member 132 may be a conductive elastic piece.
  • the elastic first conductive member 132 can further make the electrical connection between the antenna radiator 110 and the circuit module 134 more stable.
  • the first conductive member 132 may also have other structures, such as but not limited to a wire cable, and the embodiment of the present application does not limit the specific structure of the first conductive member 132 .
  • the second conductive member 133 can be disposed on the second surface 1312, and one end of the second conductive member 133 can be electrically connected to the ground plane 140, for example, electrically connected to a ground terminal on the ground plane 140, and the other end of the second conductive member 133 can be connected to the ground plane 140.
  • the second end r of the circuit module 134 is electrically connected.
  • the ground structure 130 may include one or more second conductive elements 133 , for example, the ground structure 130 in FIG. 3 includes two second conductive elements 133 .
  • One end of each second conductive element 133 can be electrically connected to the second end r of the circuit module 134 , and the other end of each first conductive element 132 can be electrically connected to the ground plane 140 .
  • the circuit module 134 When the circuit module 134 is electrically connected to the ground plane 140 through a plurality of second conductive members 133, the electrical contact area between the circuit module 134 and the ground plane 140 is larger, and the electrical connection stability between the circuit module 134 and the ground plane 140 is better. .
  • the second conductive member 133 may be a conductive elastic piece.
  • the elastic second conductive member 133 can further make the electrical connection between the circuit module 134 and the ground plane 140 more stable.
  • the second conductive member 133 may also have other structures, such as but not limited to a wire cable, and the embodiment of the present application does not limit the specific structure of the second conductive member 133 .
  • the circuit module 134 can be arranged on the insulating substrate 131, for example, the circuit module 134 can be arranged on the first surface 1311 of the insulating substrate 131, can also be arranged on the second surface 1312 of the insulating substrate 131, and can also be arranged inside the insulating substrate 131 .
  • the insulating substrate 131 may carry a circuit module 134 .
  • circuit module 134 can be formed on the insulating substrate 131 by etching, bonding, etc., and the circuit module 134 can also be connected to the insulating substrate 131 by screws or other connectors. It should be noted that, the embodiment of the present application does not limit the arrangement position of the circuit module 134 and the formation method of the circuit module 134 .
  • the circuit module 134 can be connected in series between the first conductive member 132 and the second conductive member 133, and the radio frequency signal on the antenna radiator 110 can flow into the ground plane through the first conductive member 132, the circuit module 134, and the second conductive member 133 In 140 , the antenna radiator 110 can be grounded through the circuit module 134 .
  • circuit module 134 can be electrically connected to the first conductive member 132 and the second conductive member 133 through wires.
  • the circuit module 134 can be electrically connected to the first conductive member 132 and the second conductive member 133 through wires.
  • the substrate 131 On the first surface 1311 or the second surface 1312 of the substrate 131 .
  • circuit module 134 can be electrically connected to the first conductive member 132 and the second conductive member 133 in other ways.
  • the element 132 and the second conductive element 133 are electrically connected.
  • the embodiment of the present application does not limit the specific electrical connection manner between the circuit module 134 and the first conductive member 132 and the second conductive member 133 .
  • circuit module 134 may include any series or parallel combination of one or more resistors, capacitors, inductors, and switching elements.
  • the circuit module 134 may be, but not limited to, a filter circuit, a tuning circuit, a frequency modulation circuit, a DC blocking circuit, etc., which will not be described in detail here.
  • the insulating substrate 131 of the grounding structure 130 includes a first surface 1311 and a second surface 1312 oppositely arranged, the first conductive member 132 is arranged on the first surface 1311, and the second conductive member 133 is disposed on the second surface 1312, the insulating substrate 131 carries the circuit module 134, the first end n of the circuit module 134 is electrically connected to the first conductive member 132, and the second end r of the circuit module 134 is electrically connected to the second conductive member 133,
  • the antenna radiator 110 can be grounded through the circuit module 134 .
  • the circuit module 134 does not need to be arranged on the circuit board of the antenna device 100 or electronic equipment, and the circuit module 134 does not need to be limited by the location of the circuit board.
  • 134 and the insulating substrate 131 can be arranged at the corner of the electronic device or the antenna device 100 or other positions where the circuit board is not easy to extend.
  • the location of the circuit module 134 and the insulating substrate 131 is more flexible.
  • the grounding structure 130 can be set at this position and electrically connected to the antenna radiator 110, the electrical connection between the antenna radiator 110 and the circuit module 134 is less difficult, the antenna radiator 110 can be grounded through the circuit module 134, and the antenna radiator
  • the grounding design of 110 is easier to implement.
  • FIG. 4 is a schematic structural diagram of a third antenna device provided by an embodiment of the present application
  • FIG. 5 is a schematic structural diagram of the grounding structure shown in FIG. 4
  • the antenna device 100 may further include a detection module 150 .
  • the detection module 150 may be electrically connected to the antenna radiator 110 directly or indirectly.
  • the detection module 150 can be electrically connected to the electrical connection point 111 of the antenna radiator 110 .
  • the number of electrical connection points 111 can be reduced.
  • the detection module 150 can provide a detection signal to the antenna radiator 110 to detect the electromagnetic wave absorption ratio value (Specific absorption rate, "SAR" for short) of the antenna radiator 110, and the detection module 150 can be a SAR sensor.
  • SAR Specific absorption rate
  • the SAR value can be used to evaluate the impact of electromagnetic radiation generated by electronic equipment on the human body.
  • the detection module 150 is electrically connected to the antenna radiator 110 and can detect the SAR value when the antenna radiator 110 transmits wireless signals.
  • the detection signal may be an electrical signal different from the radio frequency signal, for example, when the radio frequency signal is an AC signal.
  • the detection signal can be a DC signal or a low frequency/ultra low frequency signal.
  • the detection signal can flow on the antenna radiator 110 , and the detection signal does not need to flow into the ground plane 140 to return to the ground.
  • the detection module 150 can detect the capacitance value of the capacitor formed by the antenna radiator 110 and the ground plane 140 through the detection signal. When obstacles such as a human body or a desktop approach the antenna radiator 110, the detection signal will change, so that the antenna radiator can be detected. SAR value of 110.
  • the circuit module 134 of the grounding structure 130 can prevent the detection signal from passing through and allow the radio frequency signal to pass through, the detection signal can flow on the antenna radiator 110 without being grounded, and the radio frequency signal It can flow on the antenna radiator 110 and be grounded through the circuit module 134 , so that both the detection module 150 and the antenna radiator 110 can work normally.
  • the circuit module 134 of the ground structure 130 may be a DC blocking circuit.
  • the circuit module 134 may include a first capacitor C1, which may be a DC blocking capacitor, and the first capacitor C1 may prevent the detection signal of the DC characteristic from passing through and allow the RF signal of the AC characteristic to pass through, and the antenna
  • the device 100 can realize the integrated design of the SAR sensor and the antenna radiator 110 .
  • the circuit module 134 may also be a band-pass and band-stop circuit, for example, the circuit module 134 may be an LC oscillator circuit (not shown in FIG. 5 ). Since the detection module 150 is generally a low-frequency or ultra-low-frequency signal, and the radio-frequency signal is generally a high-frequency signal, the circuit module 134 can be an LC oscillator circuit that passes high frequency and blocks low frequency/ultra-low frequency, and the antenna device 100 can also realize SAR sensor and antenna Common body design of the radiator 110 .
  • circuit module 134 is not limited to the above-mentioned distance, and any structure that can prevent the passage of the detection signal and allow the passage of the radio frequency signal is within the protection scope of the embodiment of the present application.
  • the specific structure is not limited.
  • the circuit module 134 of the grounding structure 130 can prevent the detection signal from passing through and allow the radio frequency signal to pass through, so that the detection signal will not be grounded through the circuit module 134 and the radio frequency signal can pass through the circuit module 134 Grounded, the antenna device 100 can realize the integrated design of the SAR sensor and the antenna radiator 110; at the same time, since the circuit module 134 does not need to be limited by the location of the circuit board, the SAR sensor can detect the antenna radiator 110 arranged at any position. The detection of the SAR value of the antenna device 100 is more accurate.
  • the antenna device 100 may further include a first isolation circuit 160 and a second isolation circuit 170 .
  • the first isolation circuit 160 can be connected in series between the feed source 120 and the antenna radiator 110 , and the first isolation circuit 160 can prevent the detection signal from passing through and allow the radio frequency signal to pass through.
  • the first isolation circuit 160 may include a second capacitor C2, one end of the second capacitor C2 may be electrically connected to the feed source 120, and the other end of the second capacitor C2 may be electrically connected to the antenna radiator 110. 111 is electrically connected.
  • the second capacitor C2 can be a DC blocking capacitor or a large capacitor (capacitance value greater than 33pF), and the second capacitor C2 can prevent the detection signal from passing through and allow the radio frequency signal to pass through.
  • the second isolation circuit 170 can be connected in series between the detection module 150 and the antenna radiator 110 , and the second isolation circuit 170 can allow the detection signal to pass through and prevent the radio frequency signal from passing through.
  • the second isolation circuit 170 may include a first inductor L1, one end of the first inductor L1 may be electrically connected to the detection module 150, and the other end of the first inductor L1 may be electrically connected to the antenna radiator 110.
  • the first inductance L1 may be a DC-blocking inductance, and the first inductance L1 may prevent the radio frequency signal from passing through and allow the detection signal to pass through.
  • first isolation circuit 160 and the second isolation circuit 170 are not limited to the above examples, any structure of the first isolation circuit 160 that can prevent the detection signal from passing through and allow the radio frequency signal to pass through can be realized to prevent the radio frequency
  • the structure of the second isolation circuit 170 through which the signal passes to allow the detection signal to pass is within the protection scope of the embodiment of the present application, which is not limited in the embodiment of the present application.
  • the first isolation circuit 160 can prevent the detection signal from flowing into the feed source 120 and affect the normal operation of the feed source 120
  • the second isolation circuit 170 can prevent the radio frequency signal from flowing into the detection module 150 and affect the normal operation of the feed source 120.
  • the detection module 150 works normally, so that the antenna device 100 of the embodiment of the present application can have better radio frequency performance, and at the same time, the SAR value of the antenna radiator 110 detected by the detection module 150 is also more accurate.
  • the circuit module 134 of the grounding structure 130 can prevent the detection signal of the detection module 150 from passing through and allow the radio frequency signal to pass through to realize the common design of the SAR sensor and the antenna radiator 110, the circuit module 134 of the grounding structure 130 can also adjust the antenna The frequency of the wireless signal transmitted by the radiator 110 may also be adjusted to adjust the mode when the antenna radiator 110 transmits the wireless signal.
  • FIG. 6 is a second structural schematic diagram of the grounding structure shown in FIG. 1
  • FIG. 7 is an antenna device including the grounding structure shown in FIG. 6.
  • FIG. 8 is a schematic comparison diagram of the standing wave ratio between the antenna device including the grounding structure shown in FIG. 6 and the antenna device not including the grounding structure shown in FIG. 6 .
  • the circuit module 134 of the ground structure 130 can change the effective electrical length of the antenna radiator 110 and change the frequency of the wireless signal transmitted by the antenna radiator 110 , and the circuit module 134 can be a frequency modulation circuit.
  • the frequency modulation circuit can include a third capacitor C3, which can be connected in series between the first conductive member 132 and the second conductive member 133, and the third capacitor C3 can be a large capacitor (generally, the capacitance value is greater than 33pF).
  • the effective electrical length of the antenna radiator 110 is D1.
  • the antenna radiation The frequency of the wireless signal transmitted by the body 110 is f1.
  • the effective electrical length of the antenna radiator 110 is D2
  • the antenna radiator The frequency of the wireless signal transmitted by 110 is f2.
  • the circuit module 134 functioning as a frequency modulation circuit in the embodiment of the present application can change the electrical length of the antenna radiator 110 and can adjust the frequency of the wireless signal transmitted by the antenna radiator 110.
  • circuit module 134 functioning as a frequency modulation circuit may also be provided with a 0 ohm resistor in addition to a large capacitor, that is, the circuit module 134 functioning as a frequency modulation circuit may include a 0 ohm resistance. Any solution that can change the electrical length of the antenna radiator 110 is within the protection scope of the embodiment of the present application, and the embodiment of the present application does not limit the specific structure of the circuit module 134 that functions as a frequency modulation circuit.
  • FIG. 9 is a schematic diagram of a third structure of the grounding structure shown in FIG. 1
  • FIG. 10 is an antenna device including the grounding structure shown in FIG. 9
  • FIG. 11 is a comparison of standing wave ratios between the antenna device including the grounding structure shown in FIG. 9 and the antenna device not including the grounding structure shown in FIG. 9 schematic diagram.
  • the circuit module 134 of the grounding structure 130 can adjust the frequency of the wireless signal transmitted by the antenna radiator 110 according to the frequency selection characteristics of the inductance and capacitance, and realize the adjustment of the antenna mode.
  • the circuit module 134 can be tuned circuit.
  • the circuit module 134 may include a second inductor L2, and the second inductor L2 may be connected in series between the first conductive element 132 and the second conductive element 133 .
  • the frequency of the wireless signal transmitted by the antenna radiator 110 is f3, and the antenna radiator 110 can transmit The first type of wireless signal (such as an intermediate frequency signal); as shown in the figure f of the bottom part of Figure 10 and the figure h of the bottom part of Figure 11, when the antenna radiator 110 returns to the ground by the circuit module 134, the wireless signal transmitted by the antenna radiator 110 The frequency is f4, and the antenna radiator 110 can transmit a second type of wireless signal (eg, a high frequency signal).
  • the circuit module 134 functioning as a tuning circuit can adjust the frequency of the wireless signal transmitted by the antenna radiator 110 to realize the adjustment of the antenna mode.
  • FIG. 12 is a schematic diagram of a fourth structure of the grounding structure shown in FIG. 1
  • FIG. 13 is an antenna device including the grounding structure shown in FIG. 12 and Structural comparison diagram of an antenna device not including the ground structure shown in FIG. 12
  • FIG. 14 is a schematic diagram of a comparison of standing wave ratio between the antenna device including the ground structure shown in FIG. 12 and the antenna device not including the ground structure shown in FIG. 12 .
  • the circuit module 134 of the grounding structure 130 can be based on the frequency selection characteristics of the inductance and capacitance, the circuit module 134 can also make the antenna radiator 110 form a new resonance, and realize the adjustment of the antenna mode, the circuit module 134 can be tuned circuit.
  • the circuit module 134 may include a third inductor L3 and a fourth capacitor C4, the third inductor L3 and the fourth capacitor C4 form an LC oscillation circuit, the third inductor L3 and the fourth capacitor C4 may be connected in series between the first conductive member 132 and the second Between the conductive members 133.
  • the antenna radiator 110 when the antenna radiator 110 does not return to the ground through the circuit module 134, the antenna radiator 110 can form a first resonance, and the antenna radiator 110 can transmit frequency f5 wireless signal; as shown in Figure j in the lower part of Figure 13 and Figure l in the lower part of Figure 14, when the antenna radiator 110 returns to the ground through the circuit module 134, the antenna radiator 110 can form a first resonance and a second resonance, and the antenna radiates Body 110 may transmit wireless signals at frequencies f5 and f6.
  • the tuning circuit module 134 in this embodiment of the present application can adjust the mode of the wireless signal transmitted by the antenna radiator 110 .
  • circuit module 134 of the grounding structure 130 is only an exemplary example of the circuit module 134 of the grounding structure 130, and the specific structure of the circuit module 134 is not limited to the above example, and other schemes that can realize the grounding of the radio frequency signal transmitted by the antenna radiator 110 are all described in this application. Within the protection scope of the embodiments, no further details are given here.
  • the embodiment of the present application also provides an electronic device.
  • the electronic device may be a smart phone, a tablet computer, etc., or a game device or an augmented reality (Augmented Reality, AR) device.
  • automotive devices data storage devices, audio playback devices, video playback devices, notebook computers, desktop computing devices, etc.
  • FIG. 15 is a schematic diagram of a first structure of an electronic device provided by an embodiment of the present application.
  • the electronic device 10 may include a display screen 200 , a middle frame 300 , a circuit board 400 , a battery 500 and a rear case 600 .
  • the display screen 200 can be arranged on the middle frame 300 and connected to the rear case 600 through the middle frame 300 to form the display surface of the electronic device 10 .
  • the display screen 200 is used for displaying information such as images and texts.
  • the display screen 200 may include a liquid crystal display 200 (Liquid Crystal Display, LCD) or an organic light-emitting diode (Organic Light-Emitting Diode, OLED) display 200 and other types of display devices.
  • LCD Liquid Crystal Display
  • OLED Organic Light-Emitting Diode
  • the middle frame 300 may be a thin plate or sheet structure, or a hollow frame structure.
  • the middle frame 300 can include a middle board 320 and a frame 310, the frame 310 can be arranged around the middle board 320, the middle board 320 can provide support for the electronic devices or functional components in the electronic device 10, so that the electronic devices and functions of the electronic device 10 components fit together.
  • the circuit board 400 may be disposed on the middle frame 300 for fixing, and the circuit board 400 is sealed inside the electronic device 10 through the rear case 600 .
  • the circuit board 400 may be a main board of the electronic device 10 .
  • the feed source 120 and the detection module 150 can be disposed on the circuit board 400 .
  • a processor may also be integrated on the circuit board 400, and one or more of functional components such as an earphone jack, an acceleration detection module 150, a gyroscope, and a motor may also be integrated.
  • the display screen 200 may be electrically connected to the circuit board 400 so as to control the display of the display screen 200 through the processor on the circuit board 400 .
  • the battery 500 is disposed on the middle frame 300 , and the battery 500 is sealed inside the electronic device 10 through the rear case 600 . Meanwhile, the battery 500 is electrically connected to the circuit board 400 so that the battery 500 supplies power to the electronic device 10 .
  • the circuit board 400 may be provided with a power management circuit. The power management circuit is used to distribute the voltage provided by the battery 500 to various electronic devices in the electronic device 10 .
  • the rear case 600 is connected to the middle frame 300 .
  • the rear case 600 may be bonded to the middle frame 300 by an adhesive such as double-sided tape to achieve connection with the middle frame 300 .
  • the rear case 600 is used to seal the electronic devices and functional components of the electronic device 10 together with the middle frame 300 and the display screen 200 to protect the electronic devices and functional components of the electronic device 10 .
  • the electronic device 10 may include the antenna device 100 in the foregoing embodiments, and the antenna device 100 may be disposed on the electronic device 10 .
  • the antenna device 100 can be arranged on the casing of the electronic device 10 (that is, the surface of the electronic device 10); the antenna device 100 can also be arranged on the middle frame 300 of the electronic device 10, and the antenna device 100 can also be arranged on the electronic device 10 internal.
  • the antenna device 100 may be, but not limited to, disposed on the bottom plate of the middle frame 300 of the electronic device 10 , the circuit board 400 , a small board of the electronic device 10 , a main board, an antenna bracket of the electronic device 10 , and the like.
  • any structure that can carry the antenna device 100 can be used as the supporting part of the antenna device 100 in the embodiment of the present application, and the embodiment of the present application does not limit the specific position where the antenna device 100 is disposed on the electronic device 10 .
  • FIG. 16 is a schematic diagram of a second structure of the electronic device provided by the embodiment of the present application.
  • the middle board 320 of the electronic device 10 can form the ground plane 140
  • the electronic device 10 can include a frame 310
  • the frame 310 can be arranged around the middle board 320
  • the first gap 101 and the second gap 102 can be opened on the frame 310
  • the first gap 101 and the The second slit 102 can make the frame 310 form a metal branch 311
  • the antenna radiator 110 of the antenna device 100 can include the metal branch 311
  • the metal branch 311 can form the antenna radiator 110 .
  • a third gap 103 can be set up between the metal branch 311 and the middle plate 320.
  • the first gap 101, the second gap 102 and the third gap 103 can make the metal branch 311 in a suspended state.
  • An accommodating space 104 may be formed between them, and the ground structure 130 of the antenna device 100 may be disposed in the accommodating space 104 .
  • the grounding structure 130 can be inserted into the receiving space 104 , that is, the grounding structure 130 can be plugged into the middle plate 320 or the metal branch 311 , and the two can be detachably connected.
  • the grounding structure 130 may also be disposed in the accommodation space 104 in other ways, and the embodiment of the present application does not limit the manner in which the grounding structure 130 is disposed in the accommodation space 104 .
  • the first surface 1311 of the insulating substrate 131 can be arranged toward the metal branch 311, and the second surface 1312 of the insulating substrate 131 can be arranged toward the middle plate 320, so that the first conductive member 132 can be connected to the middle plate 320.
  • the metal branch 311 contacts and realizes electrical connection, and the second conductive member 133 can contact and realize electrical connection with the ground plane 140 .
  • the shape and structure of the insulating substrate 131 can be designed according to the actual situation of the electronic device 10 .
  • the insulating substrate 131 can be set as a rectangular structure with the same size, and the insulating substrate 131 can be inserted into the accommodation space 104 formed by the metal branch 311 and the middle frame 300 at any position.
  • the grounding structure 130 can form a standard component, which is applicable anywhere on the electronic device 10.
  • the insulating substrate 131 can also be shaped according to the specific position of the antenna radiator 110.
  • the insulating substrate 131 can also be an arc-shaped structure similar to the arc of the corner.
  • the first surface 1311 and the second surface 1312 of the insulating substrate 131 can be attached to the corners of the electronic device 10, which is more conducive to the first conductive member 132, the second conductive member 133 on the insulating substrate 131 and the antenna radiator 110 , the electrical connection of the ground plane 140 .
  • the antenna device 100 of the present application is provided with the grounding structure 130, the antenna device 100 can be arranged at the corner of the electronic device 10 as shown in FIG.
  • the insulating substrate 131 of the grounding structure 130 can carry the circuit module 134 of the grounding structure 130, the antenna device 100 can be grounded through the circuit module 134 of the grounding structure 130, and the grounding of the antenna device 100 The design is simpler.
  • the grounding structure 130 of the antenna device 100 does not need to be limited to the installation position of the circuit board 400, the antenna device 100 can be installed at any position of the electronic device 10, and the position design of the antenna device 100 is more flexible.

Landscapes

  • Support Of Aerials (AREA)

Abstract

L'invention concerne une structure de mise à la masse d'un dispositif d'antenne, un dispositif d'antenne et un appareil électronique. Un substrat isolant de la structure de mise à la masse comprend une première surface et une seconde surface disposées à l'opposé l'une de l'autre ; un premier élément conducteur est disposé sur la première surface ; un second élément conducteur est disposé sur la seconde surface ; le substrat isolant porte un module de circuit ; une première extrémité du module de circuit est électriquement connectée au premier élément conducteur, et une seconde extrémité du module de circuit est électriquement connectée au second élément conducteur ; un élément rayonnant d'antenne peut être mis à la masse au moyen du module de circuit.
PCT/CN2022/087940 2021-07-23 2022-04-20 Structure de mise à la masse de dispositif d'antenne, dispositif d'antenne et appareil électronique WO2023000733A1 (fr)

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CN202110839182.1A CN113571895B (zh) 2021-07-23 2021-07-23 天线装置的接地结构、天线装置及电子设备
CN202110839182.1 2021-07-23

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