WO2021120271A1 - Conception d'unité d'antenne intégrée - Google Patents

Conception d'unité d'antenne intégrée Download PDF

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Publication number
WO2021120271A1
WO2021120271A1 PCT/CN2019/128660 CN2019128660W WO2021120271A1 WO 2021120271 A1 WO2021120271 A1 WO 2021120271A1 CN 2019128660 W CN2019128660 W CN 2019128660W WO 2021120271 A1 WO2021120271 A1 WO 2021120271A1
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WO
WIPO (PCT)
Prior art keywords
continuous conductor
electrically connected
antenna unit
frequency filter
feeder
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Application number
PCT/CN2019/128660
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English (en)
Chinese (zh)
Inventor
杨杰钧
顾宏亮
Original Assignee
上海安费诺永亿通讯电子有限公司
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Publication of WO2021120271A1 publication Critical patent/WO2021120271A1/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
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them

Definitions

  • the present invention relates to the field of antenna structure design, in particular to an integrated antenna unit design.
  • Wireless communication is a communication method that uses electromagnetic wave signals for information exchange.
  • the antenna unit as a carrier for radiating and/or receiving electromagnetic waves, plays a vital role in wireless communication.
  • the wireless communication frequency band has undergone the evolution of the 2G, 3G, and 4G eras, and is now moving towards the 5G era. Every evolution will bring rapid changes to people's lives. With the advent of the 5G era, more and more electronic products (wireless earphones, wireless smart speakers, e-cigarettes with wireless connectivity, etc.) have joined the wireless communication family. However, the stacking of electronic devices is becoming tighter and the degree of integration is getting higher and higher, which puts forward higher and higher requirements for the integration of current communication systems.
  • the purpose of the present invention is to provide an integrated antenna unit design to solve the problems of low integration of wireless communication systems in the prior art.
  • the present invention provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor is arranged on at least one side of the electronic function device
  • AC power feeding module for feeding AC power to the continuous conductor
  • the antenna is referenced to the ground and is electrically connected to the AC feed module.
  • the integrated antenna unit design further includes a first high frequency filter module
  • the AC feed module includes: a feeder line and an AC feed source;
  • Both ends of the feed line are electrically connected to the antenna reference ground and the continuous conductor respectively;
  • the AC power supply is loaded on the feeder
  • the first high frequency filter module is arranged on the signal line of the electronic function device.
  • the electronic function device is arranged in the window opening area of the metal piece, the continuous conductor is arranged on at least one side of the electronic function device, the metal piece is the antenna reference ground, and the AC power supply
  • the feeder line is loaded on the continuous conductor, the first high-frequency filter module is arranged on the signal line of the electronic function device, and the continuous conductor excites the windowed area to form a slot antenna.
  • the electronic function device is arranged in a metal cavity structure
  • the continuous conductor is arranged on at least one side of the electronic function device
  • the metal cavity is the antenna reference ground
  • the AC feeder The power supply is loaded on the continuous conductor through the feeder line
  • the first high frequency filter module is arranged on the signal line of the electronic function device
  • the continuous conductor excites the metal cavity to form a cavity radiation antenna.
  • the electronic function device is electrically connected to the continuous conductor through a second high frequency filter module, and the AC power supply is electrically connected to the continuous conductor through a first low frequency filter module.
  • the integrated antenna unit design further includes a first high frequency filter module
  • the AC feed module includes: an AC feed source, a coupling feed branch and a first end face impedance adjustment module;
  • One end of the AC feed source is electrically connected to the antenna reference ground, and the other end is electrically connected to one end of the coupling feeder branch;
  • Two ends of the first end face impedance adjustment module are electrically connected to the antenna reference ground and the continuous conductor respectively;
  • the first high frequency filter module is arranged on the signal line of the electronic function device
  • the coupling feeder branch and the continuous conductor are spaced apart, and the projections of the coupling feeder branch and the continuous conductor at least partially overlap.
  • the electronic function device is electrically connected to the continuous conductor through a second high frequency filter module, and the first end face impedance adjustment module is electrically connected to the continuous conductor through a first low frequency filter module.
  • the continuous conductor is arranged on at least one side of the electronic function device and extends to the bottom of the signal line of the electronic function device;
  • the electronic function device is electrically connected to the continuous conductor through a second high-frequency filter module;
  • the AC feed module includes: an AC feed source, a coupling feed branch and a first end face impedance adjustment module; one end of the AC feed source is electrically connected to the antenna reference ground, and the other end is connected to the coupling feed branch. One end of the section is electrically connected; the other end of the coupling feeder section is suspended; the first end face impedance adjustment module is between the continuous conductor at the bottom of the signal line of the electronic function device and the antenna reference ground Short-circuit, and set a second low-frequency filter module on the short-circuit;
  • the coupling feeder branch and the continuous conductor are spaced apart, and the projections of the coupling feeder branch and the continuous conductor at least partially overlap.
  • the integrated antenna unit design further includes a second end face impedance adjustment module, and both ends of the second end face impedance adjustment module are electrically connected to the antenna reference ground and the continuous conductor, respectively.
  • the continuous conductor is arranged on at least one side of the electronic function device and extends to the bottom of the signal line of the electronic function device;
  • the AC power feeding module includes, a feeding line and an AC loaded on the feeding line Feeding source;
  • the second end face impedance adjustment module is a short wire between the continuous conductor at the bottom of the signal line of the electronic function device and the antenna reference ground.
  • the electronic function device is electrically connected to the continuous conductor through a second high frequency filter module
  • the AC power supply is electrically connected to the continuous conductor through a first low frequency filter module
  • the short wire is provided with The second low frequency filter module.
  • the integrated antenna unit design further includes a first high frequency filter module arranged on the signal line of the electronic function device.
  • the continuous conductor is arranged on at least one side of the electronic function device and extends to the bottom of the signal line of the electronic function device;
  • the AC feeder module includes: an AC feeder, a coupling feeder branch, and a first end face impedance adjustment module.
  • One end of the AC feeder is electrically connected to the antenna reference ground, and the other end is connected to the coupling feeder.
  • One end of the node is electrically connected; the other end of the coupling feeder branch is suspended; both ends of the first end face impedance adjustment module are respectively electrically connected to the antenna reference ground and the continuous conductor;
  • the second end face impedance adjustment module is a short wire between the continuous conductor at the bottom of the signal line of the electronic function device and the antenna reference ground.
  • the electronic function device is electrically connected to the continuous conductor through a second high frequency filter module
  • the first end face impedance adjustment module is electrically connected to the continuous conductor through a first low frequency filter module
  • the short wire A second low-frequency filtering module is provided on it.
  • the integrated antenna unit design further includes a first high-frequency filter module, and the first high-frequency filter module is arranged on the signal line of the electronic function device;
  • the AC feeder module includes: an AC feeder, a coupling feeder branch, and a first end face impedance adjustment module.
  • One end of the AC feeder is electrically connected to the antenna reference ground, and the other end is connected to the coupling feeder.
  • One end of the node is electrically connected; the other end of the coupling feeder branch is suspended; both ends of the first end face impedance adjustment module are electrically connected to the antenna reference ground and the continuous conductor, respectively.
  • the integrated antenna unit design according to any one of the above further includes a parasitic branch, one end of the parasitic branch is electrically connected to the antenna reference ground, and the other end is suspended.
  • the electronic functional device is a battery of an in-ear earphone, and the continuous conductor surrounds the entire battery;
  • the integrated antenna unit design includes: a continuous conductor, an AC feed module, an antenna reference ground, and a parasitic branch;
  • the AC feed module includes: a feeder line, an AC power supply, and a first high-frequency filter module, wherein the first high-frequency filter module is an inductor arranged on the positive and negative signal lines of the battery, and the main board is The antenna reference ground, both ends of the feeder wire are electrically connected to the main board and the continuous conductor, and the AC power supply is loaded on the feeder wire;
  • the parasitic branch is an antenna trace, the antenna trace and the continuous conductor are spaced apart, and the projections of the two are at least partially overlapped, so that the radiation field generated by the continuous conductor and the antenna trace are generated.
  • the radiation field is coupled to achieve the required resonance.
  • the continuous conductor is arranged on at least one side of an electronic function device group composed of at least one electronic function device.
  • the electronic function device is a proximity sensor, and the continuous conductor is arranged on one side of the proximity sensor and extends to the bottom of the proximity sensor signal line;
  • the integrated antenna unit design includes: a continuous conductor, an AC feed module, an antenna reference ground, a second high frequency filter module, a second low frequency filter module, a parasitic branch and other radiators, the second high frequency filter module Is an inductor, the second low-frequency filter module is a capacitor, and the other radiators are antenna extension traces;
  • the AC feed module includes: an AC feed source, a coupling feeder branch, and a first end-face impedance adjustment module, wherein one end of the AC feed source is electrically connected to the antenna reference ground, and the other end is connected to the coupling feeder.
  • One end of the power branch is electrically connected; the other end of the coupling feed branch is suspended; the first end face impedance adjustment module is between the continuous conductor at the bottom of the signal line of the electronic function device and the antenna reference ground
  • the coupling feeder branch and the continuous conductor are spaced apart, and the projection of the coupling feeder branch and the continuous conductor is at least Partially overlap
  • the second high frequency filter module is electrically connected to the signal detection needle of the proximity sensor and the continuous conductor respectively;
  • the parasitic branch and the coupling feeder branch are arranged at intervals, and the projections of the parasitic branch and the coupling feeder branch at least partially overlap.
  • the continuous conductor is electrically connected to the antenna extension trace.
  • the electronic function device is a proximity sensor, and the continuous conductor is arranged on one side of the proximity sensor and extends to the bottom of the proximity sensor signal line;
  • the integrated antenna unit design includes: continuous conductor, AC feed module, antenna reference ground, second end face impedance adjustment module, first low-frequency filter module, second low-frequency filter module, second high-frequency filter module, and other radiators And parasitic branches, wherein the first low-frequency filter module and the second low-frequency filter module are capacitors, the second high-frequency filter module is an inductor, and the other radiators are antenna extension wires;
  • the AC feeder module includes: a feeder line and an AC feeder source loaded on the feeder line, both ends of the feeder line are electrically connected to the antenna reference ground and the continuous conductor, and the AC feeder The power supply is electrically connected to the continuous conductor through the first low-frequency filter module;
  • the second end face impedance adjustment module is a short wire between the continuous conductor at the bottom of the proximity sensor signal line and the antenna reference ground, and the second low-frequency filter module is arranged on the short wire;
  • the signal detection needle of the proximity sensor is electrically connected to the continuous conductor through a second high-frequency filter module;
  • the parasitic branch and the antenna extension trace are spaced apart, and the projections of the parasitic branch and the antenna extension trace at least partially overlap.
  • the continuous conductor is electrically connected to the antenna extension trace.
  • the integrated antenna unit design of the present invention utilizes the inherent spatial position of the electronic functional device, by arranging a continuous conductor on at least one side of the electronic functional device, and using the continuous conductor as the resonant element and/or excitation source of the antenna unit , To achieve the wireless communication performance of the antenna unit, while maintaining the original performance of the electronic functional device remains unchanged, and realize the design of the electronic functional device and the antenna unit at the same time in the absence of antenna headroom or the smallest possible headroom environment, so that the electronic functional device and the antenna
  • the unit realizes spatial multiplexing, which provides the possibility for further high integration of electronic equipment; in addition, different filter modules are designed to reduce the mutual interference between the electronic function device and the antenna unit.
  • Figures 1 to 3 show schematic diagrams of the positional relationship between continuous conductors and electronic functional devices in the integrated antenna unit design of the present invention.
  • FIG. 4 shows a schematic diagram of the structure of the integrated antenna unit design of the present invention.
  • Fig. 5 is a schematic diagram showing the structure of the integrated antenna unit design with parasitic branches of the present invention.
  • 6 to 9 show schematic structural diagrams of the integrated antenna unit design according to Embodiment 1 of the present invention, and the current is directly fed.
  • FIG. 10 to FIG. 13 are schematic diagrams showing the structure of the integrated antenna unit design according to Embodiment 2 of the present invention, and the current is a coupling feeding mode.
  • FIG. 14 to 15 show schematic structural diagrams of the integrated antenna unit design according to Embodiment 3 of the present invention, and the current is in a coupling feeding mode.
  • FIG. 16 is a schematic structural diagram of an integrated antenna unit design according to Embodiment 4 of the present invention.
  • FIGS. 17 to 20 are schematic diagrams showing the structure of the integrated antenna unit design according to Embodiment 5 of the present invention, and the current is directly fed.
  • 21 to 22 show schematic structural diagrams of an integrated antenna unit design according to Embodiment 6 of the present invention.
  • FIG. 23 to FIG. 24 are schematic diagrams of the structure of the integrated antenna unit design according to Embodiment 7 of the present invention, and the current is in a coupling feeding mode.
  • Fig. 25 is a schematic structural diagram of an antenna unit based on a light-emitting diode built into the window opening area of a computer screen device Logo according to Embodiment 8 of the present invention.
  • Fig. 26 is a schematic longitudinal cross-sectional view taken along the direction A-A in Fig. 25.
  • Fig. 27 shows a simulated return loss graph of Example 8.
  • Fig. 28 shows a simulation efficiency graph of Example 8.
  • FIG. 29 is a schematic structural diagram of an antenna unit based on a horn set in a cavity according to Embodiment 9 of the present invention.
  • Fig. 30 shows a simulated return loss graph of Example 9.
  • Fig. 31 shows a simulation efficiency graph of Example 9.
  • Fig. 32 is a schematic diagram showing the structure of an antenna unit of a conventional in-ear earphone.
  • FIG. 33 is a schematic structural diagram of an antenna unit based on an in-ear earphone battery according to Embodiment 10 of the present invention.
  • FIG. 34 shows a comparison diagram of simulation efficiency of Example 10.
  • FIG. 35 is a schematic structural diagram of an antenna unit based on a proximity sensor according to Embodiment 11 of the present invention.
  • Figure 36 shows a simplified schematic diagram of Figure 35.
  • Fig. 37 shows a simulated return loss graph of Example 11.
  • Fig. 38 shows a simulation efficiency graph of Example 11.
  • FIG. 39 is a schematic structural diagram of an antenna unit based on a proximity sensor according to Embodiment 12 of the present invention.
  • Figure 40 shows a simplified schematic diagram of Figure 39.
  • Fig. 41 shows a simulated return loss graph of Example 12.
  • Fig. 42 shows a simulation efficiency graph of Example 12.
  • the antenna unit includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13;
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10;
  • the antenna is referenced to the ground 12 and is electrically connected to the AC feed module 11.
  • the continuous conductor 10 is provided on at least one side of the electronic function device 13.
  • the continuous conductor 10 may be arranged on the outer periphery of the electronic function device 13 to wrap the electronic function device 13 inside; the continuous conductor 10 may be arranged on the outer periphery of the electronic function device 13
  • the continuous conductor 10 is arranged on the lower side of the electronic function device 13; as shown in FIG. 3, the continuous conductor 10 may be arranged on both sides of the electronic function device 13 And downside.
  • the positional relationship between the continuous conductor 10 and the electronic functional device 13 can also be in other ways, and can be designed according to the specific situation of the antenna unit, which is not limited here.
  • the electronic functional device mentioned in the present invention refers to a device that needs to supply power to it and can realize certain electronic functions (such as light emission, power generation, generation, sensing, etc.), such as: light-emitting diodes, batteries , Microphone, USB, Speaker, proximity sensor (P-sensor), etc.
  • the AC power feeding module is used to feed AC power to the continuous conductor, so the AC power feeding method may be direct feeding by using an AC power source, or a radiator coupling feeding, which is not limited here.
  • the AC power feeding method may be direct feeding by using an AC power source, or a radiator coupling feeding, which is not limited here.
  • a person of ordinary skill in the art knows that, in order to achieve the performance of the antenna unit, in addition to the AC signal contained in the AC feed module, a corresponding impedance adjustment module (matching or other tuning device) will also be provided to achieve the impedance matching of the antenna unit. .
  • the antenna reference ground is used as a part of the antenna unit.
  • it can usually be all conductive components such as a motherboard, a middle frame, a screen, an FPC, a bracket with a metal coating, and so on.
  • the present invention utilizes the inherent spatial position of the electronic functional device, by arranging a continuous conductor on at least one side of the electronic functional device, and using the continuous conductor as the resonant element and/or excitation source of the antenna unit, the wireless communication function of the antenna unit is realized, and at the same time Maintain the original performance of the electronic functional device unchanged, realize the design of the electronic functional device and the antenna unit at the same time in an environment with no antenna headroom or the smallest possible headroom, so that the electronic functional device and the antenna unit can be spatially reused, which is a further improvement for the electronic equipment.
  • the high level of integration makes it possible.
  • the integrated antenna unit design further includes a parasitic branch 14, one end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • Adding a parasitic branch to the antenna unit can achieve the purpose of widening the bandwidth of the antenna unit by coupling and superimposing the alternating current feed module with the continuous conductor's feeding branch and the parasitic branch branch.
  • the opening direction of the parasitic branch and the relative position with the continuous conductor can be set according to the specific requirements of the designed antenna unit.
  • the parasitic branch is set on the lower side of the continuous conductor, and the opening is Towards the AC power feeding module.
  • the parasitic branch may be designed at the same time when the antenna unit of the present invention is designed, or it may be included in the electronic device itself.
  • the continuous conductor 10 is arranged on at least one side of an electronic function device group composed of at least one electronic function device 13.
  • the size of the continuous conductor may not meet the antenna radiation requirement.
  • it can be considered to form a group of electronic function devices with a plurality of electronic function devices in suitable positions nearby, and then set the continuous conductor On at least one side of the electronic function device group, it can meet the size requirements of antenna radiation; on the other hand, combining multiple electronic function devices as an electronic function device group can also simplify the complex structure between multiple electronic function devices and reduce The mutual influence between various electronic functional devices improves the performance of multiple electronic functional devices.
  • the continuous conductor 10 is electrically connected to other radiators.
  • the other radiators may be antenna traces in the form of PCB, LDS, FPC, etc.
  • it may be considered to electrically connect other radiators at a suitable location near the continuous conductor to the continuous conductor to increase the antenna radiation area and meet the antenna unit size requirement.
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13;
  • the first high frequency filter module 112 The first high frequency filter module 112;
  • the AC feed module 11 is used to feed AC power to the continuous conductor 10, including: a feeder line 110 and an AC feeder 111; both ends of the feeder line 110 are connected to the antenna reference ground 12 and the continuous conductor respectively 10 electrical connection; the AC power supply 111 is loaded on the feeder 110; the first high-frequency filter module 112 is arranged on the signal line 130 of the electronic function device 13.
  • the working principle of the antenna unit of this embodiment is: the AC power supply 111 feeds AC power to the continuous conductor 10 by being loaded on the feeder 110, so that the continuous conductor 10 and the antenna reference ground 12 form an antenna
  • the radiating unit radiates electromagnetic waves; in addition, the first high-frequency filter module 112 disconnects the high-frequency signal and returns to the antenna reference ground to form an electrical loop with the AC power feeding module, which affects the performance of the antenna unit.
  • the integrated antenna unit design may further include a parasitic branch 14.
  • One end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the section 14 is spaced apart from the continuous conductor 10, and the projections of the parasitic branch section 14 and the continuous conductor 10 at least partially overlap.
  • the opening direction of the parasitic branch 14 and the relative position with the continuous conductor 10 can be set according to the specific requirements of the designed antenna unit, which is not limited here.
  • the electronic function device 13 is electrically connected to the continuous conductor 10 through a second high frequency filter module 113, and the AC power supply 111 is connected to the continuous conductor through a first low frequency filter module 114.
  • 10Electrical connection The second high-frequency filter module 113 is used to disconnect the high-frequency signal between the antenna unit and the electronic function device 13, and the first low-frequency filter module 114 is used to disconnect the electronic function device 13 and the antenna unit.
  • the low frequency or direct current signal reduces the mutual influence between the electronic function device 13 and the antenna unit.
  • the integrated antenna unit design may further include a parasitic branch 14, one end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the branch section 14 and the continuous conductor 10 are spaced apart, and the projections of the parasitic branch section 14 and the continuous conductor 10 at least partially overlap.
  • the opening direction of the parasitic branch 14 and the relative position with the continuous conductor 10 can be set according to the specific requirements of the designed antenna unit, which is not limited here.
  • the functions of the first high-frequency filter module 112, the second high-frequency filter module 113, and the first low-frequency filter module 114 in the following embodiments are the same as in this embodiment, so the following In the embodiments, the functions will not be repeated one by one.
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13;
  • the first high frequency filter module 112 The first high frequency filter module 112;
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10, and includes: an AC power source 111, a coupling feeder section 210, and a first end face impedance adjustment module 211; one end of the AC power source 111 is connected to The antenna reference ground 12 is electrically connected, and the other end is electrically connected to one end of the coupling feeder section 210; the other end of the coupling feeder section 210 is suspended; both ends of the first end face impedance adjustment module 211 are respectively Is electrically connected to the antenna reference ground 12 and the continuous conductor 10; the first high-frequency filter module 112 is arranged on the signal line 130 of the electronic function device 13; the coupling feeder section 210 is connected to the The continuous conductors 10 are arranged at intervals, and the projections of the coupling feeder branch 210 and the continuous conductor 10 at least partially overlap.
  • the working principle of the antenna unit of this embodiment is: the AC power supply 111 is loaded on the coupling feeder section 210, and the coupling feeder section 210 and the continuous conductor 10 are coupled to each other to generate effective resonant radiation; ,
  • the impedance of the antenna unit is matched and adjusted by the first end face impedance adjustment module 211.
  • the first end face impedance adjustment module 211 may be a short circuit, a capacitor, an inductor, or various tuning devices (such as a switch, a variable capacitor, etc.).
  • the integrated antenna unit design may further include a parasitic branch 14.
  • One end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the section 14 and the coupling feeding branch 210 are spaced apart, and the projections of the parasitic branch 14 and the coupling feeding branch 210 at least partially overlap.
  • the opening direction of the parasitic branch 14 and the relative position with the continuous conductor 10 can be set according to the specific requirements of the designed antenna unit, which is not limited here.
  • the electronic function device 13 is electrically connected to the continuous conductor 10 through the second high frequency filter module 113, and the first end face impedance adjustment module 211 is connected to the continuous conductor 10 through the first low frequency filter module 114.
  • the continuous conductor 10 is electrically connected.
  • the integrated antenna unit design may further include a parasitic branch 14. One end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the branch section 14 and the continuous conductor 10 are spaced apart, and the projections of the parasitic branch section 14 and the continuous conductor 10 at least partially overlap.
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13 and extends to the bottom of the signal line 130 of the electronic function device 13;
  • the AC feed module 11 is used to feed AC power to the continuous conductor 10, and includes: an AC feed source 111, a coupling feeder section 210, and a first end face impedance adjustment module 211; one end of the AC feed source 111 is connected to the The antenna reference ground 12 is electrically connected, and the other end is electrically connected to one end of the coupling feeder section 210; the other end of the coupling feeder section 210 is suspended; the first end face impedance adjustment module 211 is in the The short wire between the continuous conductor 10 at the bottom of the signal line 130 of the electronic function device 13 and the antenna reference ground 12, and a second low-frequency filter module 115 is arranged on the short wire; the coupling feeder section 210 Are arranged at intervals from the continuous conductor 10, and the projections of the coupling feeder branch 210 and the continuous conductor 10 at least partially overlap;
  • the electronic function device 13 is electrically connected to the continuous conductor 10 through the second high frequency filter module 113.
  • the working principle of the antenna unit of this embodiment is: the AC power supply 111 is loaded on the coupling feeder section 210, and it couples with the continuous conductor 10 to generate effective resonant radiation; in addition, through the first end face impedance
  • the adjustment module 211 performs matching adjustment on the impedance of the antenna unit, and cuts off the low-frequency or DC signal between the electronic function device 13 and the antenna unit through the first low-frequency filter module 114, and reduces the electronic function device 13 and the antenna unit. The mutual influence between.
  • the integrated antenna unit design may further include a parasitic branch 14.
  • One end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the section 14 and the coupling feeding branch 210 are spaced apart, and the projections of the parasitic branch 14 and the coupling feeding branch 210 at least partially overlap.
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13;
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10;
  • the antenna is referenced to the ground 12 and is electrically connected to the AC feed module 11;
  • a second end face impedance adjustment module 212, and two ends of the second end face impedance adjustment module 212 are electrically connected to the antenna reference ground 12 and the continuous conductor 10, respectively.
  • the second end face impedance adjustment module 212 is used to match and adjust the impedance of the antenna unit.
  • the first end face impedance adjustment module 211 may be a capacitor, an inductor, or various tuning devices (such as switches). , Variable capacitors, etc.).
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10, so the AC power feeding method may be direct feeding by an AC power source, or a radiator coupling feeding, which is not limited here.
  • the AC power feeding method may be direct feeding by an AC power source, or a radiator coupling feeding, which is not limited here.
  • a person of ordinary skill in the art knows that, in order to achieve the performance of the antenna unit, in addition to the AC signal contained in the AC feed module, a corresponding impedance adjustment module (matching or other tuning device) will also be provided to achieve the impedance matching of the antenna unit. .
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13 and extends to the bottom of the signal line 130 of the electronic function device 13;
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10 and includes: a feeder line 110 and an AC power source 111 loaded on the feeder line 110;
  • the antenna is referenced to the ground 12 and is electrically connected to the AC power supply 111;
  • the second end face impedance adjustment module 212 is a short connection between the continuous conductor 10 at the bottom of the signal line 130 of the electronic function device 13 and the antenna reference ground 12.
  • the integrated antenna unit design may further include a parasitic branch 14.
  • One end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the section 14 is spaced apart from the continuous conductor 10, and the projections of the parasitic branch section 14 and the continuous conductor 10 at least partially overlap.
  • the opening direction of the parasitic branch 14 and the relative position with the continuous conductor 10 can be set according to the specific requirements of the designed antenna unit, which is not limited here.
  • the electronic function device 13 is electrically connected to the continuous conductor 10 through a second high frequency filter module 113, and the AC power supply 111 is connected to the continuous conductor through a first low frequency filter module 114. 10 is electrically connected, and a second low frequency filter module 115 is provided on the short wire.
  • the integrated antenna unit design may further include a parasitic branch 14. One end of the parasitic branch 14 is electrically connected to the antenna reference ground 12, and the other end is suspended.
  • the branch section 14 and the continuous conductor 10 are spaced apart, and the projections of the parasitic branch section 14 and the continuous conductor 10 at least partially overlap.
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13;
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10;
  • the antenna is referenced to the ground 12 and is electrically connected to the AC feed module 11;
  • a second end face impedance adjustment module 212, and two ends of the second end face impedance adjustment module 212 are respectively electrically connected to the antenna reference ground 12 and the continuous conductor 10;
  • the first high frequency filter module 112 is arranged on the signal line 130 of the electronic function device 13.
  • the second end face impedance adjustment module 212 is used to match and adjust the impedance of the antenna unit.
  • the first end face impedance adjustment module 211 may be a capacitor, an inductor, or various tuning devices (such as switches). , Variable capacitors, etc.).
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10, so the AC power feeding method may be direct feeding by an AC power source, or a radiator coupling feeding, which is not limited here.
  • the AC power feeding method may be direct feeding by an AC power source, or a radiator coupling feeding, which is not limited here.
  • a person of ordinary skill in the art knows that, in order to achieve the performance of the antenna unit, in addition to the AC signal contained in the AC feed module, a corresponding impedance adjustment module (matching or other tuning device) will also be provided to achieve the impedance matching of the antenna unit. .
  • the AC feed module 11 includes: an AC feed source 111, a coupling feeder section 210, and a first end-face impedance adjustment module 211; one end of the AC feed source 111 is connected to the The antenna reference ground 12 is electrically connected, and the other end is electrically connected to one end of the coupling feeder section 210; the other end of the coupling feeder section 210 is suspended in the air; both ends of the first end face impedance adjustment module 211 are respectively connected to The antenna reference ground 12 and the continuous conductor 10 are electrically connected; the coupling feeder section 210 and the continuous conductor 10 are spaced apart, and the projection of the coupling feeder section 210 and the continuous conductor 10 is at least Partially overlapped.
  • the integrated antenna unit design may further include a parasitic stub 14, one end of the parasitic stub 14 is electrically connected to the antenna reference ground 12, and the other end is suspended in the air to broaden the bandwidth of the antenna unit.
  • this embodiment provides an integrated antenna unit design, and the antenna unit at least includes:
  • the continuous conductor 10 is arranged on at least one side of the electronic function device 13 and extends to the bottom of the signal line 130 of the electronic function device 13;
  • the antenna is referenced to the ground 12 and is electrically connected to the AC power supply 111;
  • the AC power feeding module 11 is used to feed AC power to the continuous conductor 10, and includes: an AC power source 111, a coupling feeder section 210, and a first end face impedance adjustment module 211.
  • One end of the AC power source 111 is connected to the The antenna reference ground 12 is electrically connected, and the other end is electrically connected to one end of the coupling feeder section 210; the other end of the coupling feeder section 210 is suspended; both ends of the first end face impedance adjustment module 211 are respectively Electrically connected to the antenna reference ground 12 and the continuous conductor 10;
  • the second end face impedance adjustment module 212 is a short connection between the continuous conductor 10 at the bottom of the signal line 130 of the electronic function device 13 and the antenna reference ground 12.
  • the electronic function device 13 is electrically connected to the continuous conductor 10 through the second high frequency filter module 113, and the first end face impedance adjustment module 211 is connected to the continuous conductor 10 through the first low frequency filter module 114.
  • the continuous conductor 10 is electrically connected, and a second low frequency filter module 115 is provided on the short wire.
  • the logo window area a certain area of the laptop screen back cover is the Logo window area.
  • the size of this area can be 38mm ⁇ 7mm ⁇ 2mm, of course, it can also be other sizes. It is mainly determined by the specific computer screen design.
  • the window area is built-in. There are light-emitting diodes to light up the brand logo.
  • this embodiment provides an antenna unit based on the light-emitting diodes built into the opening area of the logo of the computer screen based on the light-emitting diodes, and the electronic functional device is built into the opening area 27 of the logo of the computer screen 25
  • the light emitting diode 20 the continuous conductor 21 is arranged behind the light emitting diode 20
  • the feeder is an FPC (Flexible Printed Circuit) transmission line 22
  • the first high frequency filter module is arranged on the light emitting diode 20
  • the inductance 23 on the positive and negative signal lines 24 and the computer screen 25 are the antenna reference ground, and the computer screen here is made of metal.
  • the AC feed source 26 is loaded on the FPC transmission line 22, and the continuous conductor 21 excites the windowed area 27 to form a slot antenna.
  • the thickness of the laptop screen is limited, so the FPC transmission line is mostly used to power the electronic devices in the screen due to its flat and thin characteristics.
  • the continuous conductor and the FPC transmission line can be designed into an integrated structure and attached to the back of the light-emitting diode.
  • This embodiment utilizes the structure and area of the light-emitting diode 20 to fully retain the original ID (Industry Design) design and function of the product, and realize the function of a WLAN (Wireless Local Aear Network) antenna unit to achieve spatial multiplexing. the goal of.
  • the simulated return loss diagram of the antenna unit under the installation of this embodiment is shown in FIG. 27, which can cover the dual-frequency resonance of 2.4 GHz-2.5 GHz and 5.15 GHz-5.85 GHz.
  • the simulation efficiency diagram of the antenna unit under the installation of this embodiment is shown in FIG. 28.
  • the radiation efficiency of the antenna at high and low frequencies can meet the performance index requirements of the WLAN antenna unit.
  • the continuous conductor of this embodiment is applied to the light emitting diode in the window opening area of the computer screen, and can also be applied to other electronic functional devices and window structures with similar structures.
  • this embodiment provides an antenna unit based on a horn unit based on a horn in an electronic device.
  • the electronic function device is set in a metal cavity 35 (the size of the cavity 35 may be 35mm ⁇ 11mm ⁇ 10mm, of course, can also be other sizes, mainly determined by the specific design of the electronic device) in the speaker unit 30, the continuous conductor 31 is arranged on one side of the speaker unit 30, the feeder line is the FPC transmission line 32
  • the first high-frequency filter module is an inductor 33 arranged on the positive and negative signal lines 34 of the horn 30, the metal cavity 35 is the antenna reference ground, and the AC power supply 36 is loaded on the On the FPC transmission line 32, the continuous conductor 31 excites the metal cavity 35 to form a cavity radiation antenna.
  • a better design scheme can integrate the continuous conductor 31 structure into the same FPC transmission line.
  • This embodiment utilizes the structure and area of the horn unit 30 to fully retain the original ID (Industry Design) design and function of the product, and realize the function of a WLAN (Wireless Local Aear Network) antenna unit to achieve spatial multiplexing. the goal of.
  • the simulated return loss diagram of the antenna unit in the installation of this embodiment is shown in FIG. 30, which can cover the dual-frequency resonance of 2.4 GHz-2.5 GHz and 5.15 GHz-5.85 GHz.
  • the simulation efficiency diagram of the antenna unit in the installation of this embodiment is shown in FIG. 31.
  • the high and low frequency radiation efficiency of the antenna can meet the performance index requirements of the WLAN antenna unit.
  • the continuous conductor of this embodiment is applied to a horn in a metal cavity, and can also be applied to other electronic functional devices and cavity structures with similar structures.
  • FIG 32 it is the design of a general in-ear earphone BT (Bluetooth) antenna unit in the prior art, the size is 11mm ⁇ 11mm ⁇ 6.5mm, and the antenna wiring 46 is attached to the earphone shell 48 (usually a plastic case) On the outside of the, the AC feed power is connected to the main board 45 and the antenna trace 46 to form a monopole antenna. Due to the limitation of the size of the earphone, the battery 40 occupies most of the space of the overall size of the earphone, thereby affecting the performance of the antenna unit.
  • Bluetooth Bluetooth
  • this embodiment provides a battery-based antenna unit based on the battery 40 of the earphone.
  • the electronic function device is the battery 40 of the earphone.
  • the continuous conductor 41 surrounds the entire battery 40.
  • the antenna unit includes: a continuous conductor 41, an AC feed module, a first high-frequency filter module, an antenna reference ground and a parasitic branch;
  • the main board 45 is the antenna reference ground, and the first high-frequency filter module is an inductor 43 arranged on the positive and negative signal lines 44 of the battery 40
  • the AC feeder module includes: a feeder 42 and an AC feeder 47; wherein, both ends of the feeder 42 are electrically connected to the main board 45 and the continuous conductor 41, and the AC feeder 47 is loaded on On the feeder 42;
  • the parasitic branch is an antenna trace 46.
  • the antenna trace 46 and the continuous conductor 41 are spaced apart, and the projections of the two are at least partially overlapped, so that the continuous conductor 41 and the antenna trace 46 are mutually The coupling achieves the desired resonance.
  • Fig. 34 is a simulation efficiency comparison diagram of the antenna unit of the in-ear earphone of this embodiment (the upper line in Fig. 34) and the in-ear earphone antenna unit in the prior art (the lower line in Fig. 34). Obviously, Compared with the prior art, the efficiency of the antenna unit of this embodiment is significantly improved.
  • the continuous conductor 41 surrounds the entire battery 40 in this embodiment. In other embodiments, the continuous conductor 41 may also be provided on one or more sides of the battery 40.
  • Wireless electronic products are limited by the location of the antenna and the transmit power of the chip.
  • the antenna performance cannot pass the SAR (Specific Absorption Rate) regulations.
  • a SAR reduction sensor needs to be added to reduce the emission of the chip by sensing the proximity of the human body. Power to ensure that the SAR value is lower than the legal requirements.
  • the commonly used SAR sensor is the P-sensor (proximity sensor).
  • the P-sensor sensor has a specific size and is generally placed outside the antenna clearance area to reduce the impact on the antenna performance.
  • the antenna headroom area (100mm ⁇ 11mm ⁇ 2mm) is spatially multiplexed, and the antenna design and the P-sensor sensor design with working frequency bands of 700MHz-960MHz and 1710MHz-2690MHz are simultaneously realized in a limited space.
  • the electronic functional device in this embodiment is a proximity sensor 50, and the continuous conductor 51 is arranged on one side of the proximity sensor 50 and extends to the bottom of the signal line of the proximity sensor 50;
  • the antenna unit includes: a continuous conductor 51, an AC feed module, an antenna reference ground 562, a second high-frequency filter module, a second low-frequency filter module, a parasitic branch 55 and other radiators, the second high-frequency filter module Is an inductor 53, the second low-frequency filter module is a capacitor 54, and the other radiator is an antenna extension trace 56;
  • the AC feeder module includes: an AC feeder 57, a coupling feeder 58 and a first end-face impedance adjustment module 59, wherein one end of the AC feeder 57 is electrically connected to the antenna reference ground 562, and the other end Is electrically connected to one end of the coupling feeder branch 58; the other end of the coupling feeder branch 58 is suspended; the first end face impedance adjustment module 59 is the continuous line at the bottom of the signal line of the electronic function device A short connection between the conductor 51 and the antenna reference ground 562, and a second low-frequency filter module 54 is arranged on the short connection; the coupling feeder branch 58 and the continuous conductor 51 are spaced apart, and the The projection of the coupling feed branch 58 and the continuous conductor 51 at least partially overlap;
  • the second high frequency filter module is electrically connected to the signal detection needle 52 of the proximity sensor 50 and the continuous conductor 51 respectively;
  • the parasitic branch 55 and the coupling feeder branch 58 are spaced apart, and projections of the parasitic branch 55 and the coupling feeder branch 58 at least partially overlap;
  • the continuous conductor 51 is electrically connected to the antenna extension trace 56.
  • the working principle of the antenna and the electronic functional device of this embodiment is as follows: the AC power supply 57 is loaded on the coupling feed branch 58 to couple and feed the continuous conductor 51, and the antenna extension trace 56 It is electrically connected to the continuous conductor 51 to expand the working frequency band of the antenna unit; the coupling feeder branch 58, the continuous conductor 51, the antenna extension trace 56 and the parasitic branch 55 all participate in the radiation of the antenna; at the same time the proximity sensor 50 The signal detection needle 52 is electrically connected to the continuous conductor 51 through the second high frequency module.
  • the continuous conductor 51 also works as the signal induction branch of the proximity sensor 50, and sends an instruction whether to reduce the power to the chip of the proximity sensor 50; the second low frequency The filter module 54 and the second high frequency module 53 jointly ensure that the proximity sensor 50 and the working signal of the antenna unit are isolated from each other and do not interfere with each other.
  • the antenna unit of this embodiment can implement WLAN, MIMO (Multiple Input Multiple Output) and other antenna designs.
  • the simulation results of the return loss and antenna efficiency of the antenna unit of this embodiment can meet the indicators of commonly used 2G, 3G, and 4G antennas. If the antenna extension trace 56 is optimized, an antenna design with a working frequency band of 600MHz-6000MHz can be realized.
  • the continuous conductor 51 is arranged at the bottom of the proximity sensor 50. According to actual application requirements, the continuous conductor 51 can also be arranged on multiple sides of the proximity sensor 50, or in the form of wrapping the entire proximity sensor 50. Improve the sensing range of the proximity sensor 50.
  • the antenna clearance area (100mm ⁇ 11mm ⁇ 2mm) is spatially multiplexed, and the antenna design with the working frequency band of 600MHz-6000MHz and the design of the P-sensor sensor are simultaneously realized in a limited space.
  • the electronic functional device is a proximity sensor 60, and the continuous conductor 61 is arranged on one side of the proximity sensor 60 and extends to the bottom of the signal line of the proximity sensor 60;
  • the antenna unit includes: a continuous conductor 61, an AC feed module, an antenna reference ground 600, a second end face impedance adjustment module, a first low-frequency filter module, a second low-frequency filter module, a second high-frequency filter module, other radiators, and The parasitic branch 65, wherein the first low-frequency filter module and the second low-frequency filter module are capacitors 64, the second high-frequency filter module is an inductor 63, and the other radiators are antenna extension traces 66;
  • the AC feeder module includes: a feeder line 67 and an AC feeder source 68 loaded on the feeder line 67, both ends of the feeder line 67 are electrically connected to the antenna reference ground 600 and the continuous conductor 61 respectively , And the AC feed source 68 is electrically connected to the continuous conductor 61 through the first low-frequency filter module;
  • the second end face impedance adjustment module is a short wire between the continuous conductor 61 at the bottom of the signal line of the proximity sensor 60 and the antenna reference ground 600, and the second low frequency is set on the short wire Filter module;
  • the signal detection needle 62 of the proximity sensor 60 is electrically connected to the continuous conductor 61 through the second high frequency filter module 63;
  • the parasitic stub 65 and the antenna extension trace 66 are spaced apart, and the projections of the parasitic stub 65 and the antenna extension trace 66 at least partially overlap;
  • the continuous conductor 61 is electrically connected to the antenna extension wire 66.
  • the working principle of the antenna and the electronic functional device of this embodiment is: the AC power supply 68 is loaded on the continuous conductor 61 through the first low-frequency filter module 64, and the antenna extension wire 66 is electrically connected to the continuous conductor 61 , Expand the working frequency band of the antenna unit; the continuous conductor 61, the antenna extension trace 66, and the parasitic branch 65 are all involved in the radiation of the antenna; at the same time, the signal detection needle 62 of the proximity sensor 60 passes through the second high-frequency filter 63 module and The continuous conductor 61 is electrically connected.
  • the continuous conductor 61 works as the signal induction branch of the proximity sensor 60 at the same time, and sends an instruction whether to reduce the power to the chip of the proximity sensor 60; the first low-frequency filter module 64 and the second low-frequency filter module 64 and the second high frequency filter module 63 jointly ensure that the working signals of the proximity sensor 60 and the antenna unit are isolated from each other and do not interfere with each other.
  • the simulation results of the return loss and antenna efficiency of the antenna unit of this embodiment can meet the specifications of commonly used 2G, 3G, 4G and 5G (FR1) frequency band antennas.
  • the continuous conductor 61 is arranged at the bottom of the proximity sensor 60. According to actual application requirements, the continuous conductor 61 can also be arranged on multiple sides of the proximity sensor 60 or wrap the entire proximity sensor 60 to improve the sensitivity of the proximity sensor 60. range.
  • the integrated antenna unit design of the present invention utilizes the inherent spatial position of the electronic functional device, by arranging a continuous conductor on at least one side of the electronic functional device, and using the continuous conductor as the resonant element and/or excitation of the antenna unit It realizes the wireless communication performance of the antenna unit, while maintaining the original performance of the electronic function device, and realizes the design of the electronic function device and the antenna unit at the same time in the absence of antenna clearance or the smallest possible clearance environment, so that the electronic function device and the antenna unit are realized Spatial multiplexing provides the possibility for further high integration of electronic equipment; in addition, different filter modules are designed to reduce the mutual interference between electronic functional devices and antenna units. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial value.

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Abstract

La présente invention concerne une conception d'unité d'antenne intégrée, comprenant : un conducteur continu disposé sur au moins un côté d'un dispositif fonctionnel électronique ; un module d'alimentation en courant alternatif destiné à fournir un courant alternatif dans le conducteur continu ; et une masse de référence d'antenne connectée électriquement au module d'alimentation en courant alternatif. La présente invention utilise la position spatiale inhérente du dispositif fonctionnel électronique, fournit le conducteur continu sur un ou plusieurs côtés du dispositif fonctionnel électronique, et utilise le conducteur continu comme élément résonant et/ou source d'excitation de l'unité d'antenne, met en œuvre la performance de communication sans fil de l'unité d'antenne, ne change pas la performance d'origine du dispositif fonctionnel électronique, et met en œuvre de la conception du dispositif fonctionnel électronique et de l'unité d'antenne tout en n'ayant aucun dégagement d'antenne ou ayant un jeu d'antenne éventuellement réduit, de sorte que le dispositif fonctionnel électronique et l'unité d'antenne mettent en œuvre un multiplexage spatial, ce qui permet au dispositif électronique d'être encore hautement intégré. De plus, différents modules de filtrage sont conçus pour réduire les interférences mutuelles entre le dispositif fonctionnel électronique et les unités d'antenne.
PCT/CN2019/128660 2019-12-16 2019-12-26 Conception d'unité d'antenne intégrée WO2021120271A1 (fr)

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