WO2021241766A1 - Antenne de rerayonnement et dispositif de charge sans fil - Google Patents

Antenne de rerayonnement et dispositif de charge sans fil Download PDF

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Publication number
WO2021241766A1
WO2021241766A1 PCT/KR2020/006767 KR2020006767W WO2021241766A1 WO 2021241766 A1 WO2021241766 A1 WO 2021241766A1 KR 2020006767 W KR2020006767 W KR 2020006767W WO 2021241766 A1 WO2021241766 A1 WO 2021241766A1
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WO
WIPO (PCT)
Prior art keywords
antenna
loop
extension
point
wireless charging
Prior art date
Application number
PCT/KR2020/006767
Other languages
English (en)
Korean (ko)
Inventor
드미트리네미리히
민재상
황주성
로만사리모프
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to PCT/KR2020/006767 priority Critical patent/WO2021241766A1/fr
Priority to KR1020227026956A priority patent/KR20230014678A/ko
Publication of WO2021241766A1 publication Critical patent/WO2021241766A1/fr

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Classifications

    • 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
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material

Definitions

  • the present invention relates to a re-radiation antenna capable of receiving and re-radiating a radio signal, and a wireless charging device including the same.
  • Korean Patent No. 10-1594373 B1 (registration date: Feb. 5, 2016) discloses a re-radiation antenna and a wireless charging device. It receives the wireless signal and transmits it to the terminal.
  • the power transmission coil is located inside the housing, and receives power from the printed circuit board to wirelessly transmit power to an external terminal.
  • the re-radiation antenna includes an insulating plate, a first antenna, and a second antenna.
  • the first switch is configured to connect any one of the first antenna and the second antenna to the printed circuit board so as to transmit and receive a signal.
  • the second antenna is formed on one side of the insulating plate, is made of a conductive material, and is spaced apart from the first antenna.
  • the first loop portion is formed in a closed loop (loop) shape.
  • the first loop portion is formed in a form in which the ring is not broken, and both ends of the ring are connected to each other.
  • the first connection part protrudes outwardly of the first loop part.
  • the first branch portion is connected to the first connection portion, and both ends extend toward the second antenna.
  • the second loop portion is formed in a closed loop (loop) shape.
  • the second loop portion is formed in a form in which the ring is not broken, and both ends of the ring are connected to each other.
  • the second branch part is connected to the second connection part, and both ends extend toward the first antenna.
  • the first loop part and the second loop part may each form a long rectangular shape in the first direction and be parallel to each other.
  • the first loop part and the second loop part are symmetrical to each other, and the first branch part and the The second branch portions may be symmetrical to each other.
  • the first branch portion may include a first central portion, a first extension portion, and a second extension portion.
  • the second central portion may be connected to the second connection portion, parallel to the first direction, and have the same length as the second loop portion.
  • the third extension portion may extend from one end of the second central portion closer to the second connection portion than the second centerline toward the first antenna.
  • the fourth extension portion may extend toward the first antenna from one end of the second central portion that is farther from the second connection portion than the second center line.
  • the second switch is configured to selectively connect a fifth point positioned on the first extension to the ground of the printed circuit board.
  • the electromagnetic induction method has high efficiency, the power transmitting coil 140 and the power receiving coil must be located adjacent to each other, and when they are spaced apart or arranged at an angle, the efficiency is greatly reduced. Therefore, in the electromagnetic induction type charging, the arrangement between the power transmission coil 140 and the power reception coil is very important.
  • any one of the antennas may show better transmission/reception efficiency of radio waves with the mobile terminal than the other antenna.
  • the control unit prevents the first antenna 220 from being grounded or grounded to the printed circuit board 120 through the second switch 160, so that a more efficient antenna between the first antenna 220 and the mobile terminal Coupling may be made.
  • the first antenna 220 and the second antenna 230 are rotationally symmetric with each other based on the central axis CP (which may be parallel to the third direction Z) perpendicular to the surface of the insulating plate 210 .
  • the first loop part 221 and the second loop part ( 231 may be symmetrical to each other, and the first branch part 223 and the second branch part 233 may be symmetrical to each other.
  • the first extension portion 223b may extend from one end of the first central portion 223a closer to the first connection portion 222 than the second center line CL2 toward the second antenna 230 .
  • the second extension portion 223c may extend toward the second antenna 230 from one end of the first central portion 223a that is farther from the first connection portion 222 than the second center line CL2 .
  • the first extension part 223b may be formed on the left edge of the re-radiation antenna 200 .
  • the second extension 223c may be formed on the right edge of the re-radiation antenna 200 .
  • the fourth extension portion 233c may extend toward the first antenna 220 from one end of the second central portion 233a that is farther from the second connection portion 232 than the second center line CL2 .
  • a signal is input from the printed circuit board to one of the first point 225a and the second point 225b, and the other is connected to the ground.
  • the signal received from the external antenna 300 is transmitted toward the second antenna 230 through the second port 235 . transmitted and radiated.
  • the reflection coefficient is a ratio of the intensity of an incident signal to a signal reflected and output in a decibel region, and since the intensity of a signal reflected and output is small, the reflection coefficient is negative.
  • the re-radiation antenna 200 may include a first protrusion 224 and a second protrusion 234 .
  • the lower portion 610 of the mobile terminal 600 may be placed directly above the first loop portion 221 of the first antenna 220 .
  • the antenna coupling efficiency may be excellent when the mobile terminal 600 is mounted in a fixed position.
  • the length L6 from the lower end of the first extension 223b to the fifth point 226 may vary depending on the size of the wireless charging device 100, the antenna characteristics of the applied mobile terminal, the characteristics of the frequency used, and the like. can be done
  • the magnitude of the reflection coefficient is different from each other in the mobile communication frequency band, and in particular , it can be seen that there is a difference in the signal in the low frequency band (800 MHz to 1000 MHz).
  • Re-radiation antenna and wireless charging device in that wireless charging and transmission and reception of wireless signals can be made effectively, industrial applicability is remarkable.

Landscapes

  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Support Of Aerials (AREA)

Abstract

Antenne de rerayonnement et dispositif de charge sans fil. L'antenne de rerayonnement comprend une première antenne et une seconde antenne. La première antenne comprend une première partie boucle, une première partie de connexion, et une première partie de ramification, et la seconde antenne comprend une seconde partie boucle, une seconde partie de connexion et une seconde partie de ramification. La première antenne et la seconde antenne sont espacées l'une de l'autre et peuvent être sélectivement activées. Même lorsqu'un terminal mobile est placé sur le dispositif de charge sans fil dans une direction différente de celui-ci, une transmission de signal sans fil peut être efficacement réalisée entre l'antenne de rerayonnement et le terminal mobile.
PCT/KR2020/006767 2020-05-25 2020-05-25 Antenne de rerayonnement et dispositif de charge sans fil WO2021241766A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/KR2020/006767 WO2021241766A1 (fr) 2020-05-25 2020-05-25 Antenne de rerayonnement et dispositif de charge sans fil
KR1020227026956A KR20230014678A (ko) 2020-05-25 2020-05-25 재방사 안테나 및 무선충전장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2020/006767 WO2021241766A1 (fr) 2020-05-25 2020-05-25 Antenne de rerayonnement et dispositif de charge sans fil

Publications (1)

Publication Number Publication Date
WO2021241766A1 true WO2021241766A1 (fr) 2021-12-02

Family

ID=78744857

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2020/006767 WO2021241766A1 (fr) 2020-05-25 2020-05-25 Antenne de rerayonnement et dispositif de charge sans fil

Country Status (2)

Country Link
KR (1) KR20230014678A (fr)
WO (1) WO2021241766A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8207906B2 (en) * 2007-01-08 2012-06-26 Apple Inc. Antenna insert
US20130300358A1 (en) * 2008-05-13 2013-11-14 Qualcomm Incorporated Wireless power transfer for appliances and equipments
KR20140000814A (ko) * 2012-06-25 2014-01-06 한국전자통신연구원 방향 제어 안테나 및 그의 제어 방법
KR20160114884A (ko) * 2015-03-25 2016-10-06 엘지전자 주식회사 재방사 안테나 및 무선충전장치
KR20200003907A (ko) * 2018-06-01 2020-01-10 후아웨이 테크놀러지 컴퍼니 리미티드 안테나 및 이동 단말기

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8207906B2 (en) * 2007-01-08 2012-06-26 Apple Inc. Antenna insert
US20130300358A1 (en) * 2008-05-13 2013-11-14 Qualcomm Incorporated Wireless power transfer for appliances and equipments
KR20140000814A (ko) * 2012-06-25 2014-01-06 한국전자통신연구원 방향 제어 안테나 및 그의 제어 방법
KR20160114884A (ko) * 2015-03-25 2016-10-06 엘지전자 주식회사 재방사 안테나 및 무선충전장치
KR20200003907A (ko) * 2018-06-01 2020-01-10 후아웨이 테크놀러지 컴퍼니 리미티드 안테나 및 이동 단말기

Also Published As

Publication number Publication date
KR20230014678A (ko) 2023-01-30

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