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WO2008143220A1 - Antenna unit - Google Patents

Antenna unit Download PDF

Info

Publication number
WO2008143220A1
WO2008143220A1 PCT/JP2008/059151 JP2008059151W WO2008143220A1 WO 2008143220 A1 WO2008143220 A1 WO 2008143220A1 JP 2008059151 W JP2008059151 W JP 2008059151W WO 2008143220 A1 WO2008143220 A1 WO 2008143220A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
minute loop
circuit board
loop antenna
antenna unit
Prior art date
Application number
PCT/JP2008/059151
Other languages
French (fr)
Japanese (ja)
Inventor
Shinsuke Ueda
Kazuhiro Matsumoto
Kazuhisa Yoshiki
Hirotada Higashihama
Hideki Kasai
Yoko Tanikaga
Takashi Saeki
Original Assignee
Panasonic Electric Works Co., Ltd.
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 Panasonic Electric Works Co., Ltd. filed Critical Panasonic Electric Works Co., Ltd.
Priority to CN2008800165558A priority Critical patent/CN101682117B/en
Priority to KR1020097025633A priority patent/KR101145609B1/en
Publication of WO2008143220A1 publication Critical patent/WO2008143220A1/en

Links

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
    • H01Q1/007—Details of, or arrangements associated with, antennas specially adapted for indoor communication
    • 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
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • 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
    • 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
    • H01Q7/005—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 variable reactance for tuning the antenna
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • H01Q9/285—Planar dipole

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

An antenna unit employing a minute loop antenna comprises a minute loop antenna (11) formed substantially perpendicular to the mounting surface of a circuit board (2), a ground pattern (6) formed on the mounting surface of the circuit board (2) and functioning as a dipole antenna, and a wireless circuit section (12) mounted on the circuit board. When a conductors is arranged closely, increase in resonance frequency of the minute loop antenna (11) due to the conductor is compensated by lowering the resonance frequency of the dipole antenna (6), thereby reducing impedance mismatch between the minute loop antenna (11) and the dipole antenna (6) and the wireless circuit section (12).
PCT/JP2008/059151 2007-05-18 2008-05-19 Antenna unit WO2008143220A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008800165558A CN101682117B (en) 2007-05-18 2008-05-19 Antenna unit
KR1020097025633A KR101145609B1 (en) 2007-05-18 2008-05-19 Antenna device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-132344 2007-05-18
JP2007132344A JP4770792B2 (en) 2007-05-18 2007-05-18 Antenna device

Publications (1)

Publication Number Publication Date
WO2008143220A1 true WO2008143220A1 (en) 2008-11-27

Family

ID=40031917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/059151 WO2008143220A1 (en) 2007-05-18 2008-05-19 Antenna unit

Country Status (5)

Country Link
JP (1) JP4770792B2 (en)
KR (1) KR101145609B1 (en)
CN (1) CN101682117B (en)
TW (1) TWI357690B (en)
WO (1) WO2008143220A1 (en)

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JP2008288916A (en) * 2007-05-18 2008-11-27 Panasonic Electric Works Co Ltd Antenna system
JP2008288915A (en) * 2007-05-18 2008-11-27 Panasonic Electric Works Co Ltd Antenna system
JP2010245789A (en) * 2009-04-03 2010-10-28 Toyota Central R&D Labs Inc Antenna device
JP2011222833A (en) * 2010-04-12 2011-11-04 Canon Inc Electromagnetic wave detecting device
EP2662925B1 (en) * 2012-05-10 2018-04-04 Acer Incorporated Communication device and antenna structure therein

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US7519328B2 (en) 2006-01-19 2009-04-14 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US9064198B2 (en) 2006-04-26 2015-06-23 Murata Manufacturing Co., Ltd. Electromagnetic-coupling-module-attached article
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US8235299B2 (en) 2007-07-04 2012-08-07 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
WO2008136226A1 (en) 2007-04-26 2008-11-13 Murata Manufacturing Co., Ltd. Wireless ic device
JP4666102B2 (en) 2007-05-11 2011-04-06 株式会社村田製作所 Wireless IC device
WO2009008296A1 (en) 2007-07-09 2009-01-15 Murata Manufacturing Co., Ltd. Wireless ic device
CN101578616A (en) 2007-07-17 2009-11-11 株式会社村田制作所 Wireless IC device and electronic apparatus
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EP2251934B1 (en) 2008-03-03 2018-05-02 Murata Manufacturing Co. Ltd. Wireless ic device and wireless communication system
JP4609604B2 (en) 2008-05-21 2011-01-12 株式会社村田製作所 Wireless IC device
JP5218558B2 (en) 2008-05-26 2013-06-26 株式会社村田製作所 Wireless IC device system and authentication method for wireless IC device
EP2320519B1 (en) 2008-08-19 2017-04-12 Murata Manufacturing Co., Ltd. Wireless ic device and method for manufacturing same
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EP2385580B1 (en) 2009-01-30 2014-04-09 Murata Manufacturing Co., Ltd. Antenna and wireless ic device
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CN102916248B (en) 2009-04-21 2015-12-09 株式会社村田制作所 Antenna assembly and resonance frequency establishing method thereof
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WO2011062238A1 (en) 2009-11-20 2011-05-26 株式会社村田製作所 Antenna device and mobile communication terminal
GB2488450B (en) 2009-12-24 2014-08-20 Murata Manufacturing Co Antenna and mobile terminal
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JP5630499B2 (en) 2010-03-31 2014-11-26 株式会社村田製作所 Antenna apparatus and wireless communication device
WO2012005278A1 (en) 2010-07-08 2012-01-12 株式会社村田製作所 Antenna and rfid device
JP5630503B2 (en) 2010-07-28 2014-11-26 株式会社村田製作所 Antenna device and communication terminal device
WO2012020748A1 (en) 2010-08-10 2012-02-16 株式会社村田製作所 Printed wire board and wireless communication system
JP5630506B2 (en) 2010-09-30 2014-11-26 株式会社村田製作所 Wireless IC device
WO2012050037A1 (en) 2010-10-12 2012-04-19 株式会社村田製作所 Antenna apparatus and communication terminal apparatus
GB2501385B (en) 2010-10-21 2015-05-27 Murata Manufacturing Co Communication terminal device
CN105048058B (en) 2011-01-05 2017-10-27 株式会社村田制作所 Wireless communication devices
CN103299325B (en) 2011-01-14 2016-03-02 株式会社村田制作所 RFID chip package and RFID label tag
JP5785007B2 (en) * 2011-02-04 2015-09-24 デクセリアルズ株式会社 ANTENNA DEVICE AND COMMUNICATION DEVICE
CN104899639B (en) 2011-02-28 2018-08-07 株式会社村田制作所 Wireless communication devices
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JP5660217B2 (en) 2011-07-19 2015-01-28 株式会社村田製作所 Antenna device, RFID tag, and communication terminal device
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WO2015159324A1 (en) * 2014-04-17 2015-10-22 三菱電機株式会社 Antenna device and antenna-manufacturing method
US9748654B2 (en) * 2014-12-16 2017-08-29 Laird Technologies, Inc. Antenna systems with proximity coupled annular rectangular patches
JP6206563B2 (en) * 2016-08-09 2017-10-04 富士通株式会社 Data communication terminal
JP6873539B2 (en) * 2017-01-16 2021-05-19 日本無線株式会社 Antenna device and wireless communication device
CN114062796B (en) * 2020-08-04 2023-11-14 青岛海尔电冰箱有限公司 Detection device for electromagnetic wave generation system
TWI816134B (en) * 2021-06-09 2023-09-21 財團法人工業技術研究院 Antenna module
JPWO2023084914A1 (en) * 2021-11-10 2023-05-19

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JPH0213842B2 (en) * 1981-12-16 1990-04-05 Matsushita Electric Ind Co Ltd
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DE10025992A1 (en) * 2000-05-25 2002-01-03 Siemens Ag Antenna system e.g. for mobile telephone has respective electrically and magnetically active antennas spaced in near field
JP3840883B2 (en) * 2000-07-12 2006-11-01 日本電気株式会社 Printed circuit board design support apparatus, design support method, and recording medium recording program used in design support apparatus
JP2002299880A (en) * 2001-03-30 2002-10-11 Seiko Epson Corp Electromagnetic wave shielding antenna element and electromagnetic wave shield using the same
JP2004165916A (en) * 2002-11-12 2004-06-10 Shinko Electric Ind Co Ltd Circuit board with built-in patterned antenna
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008288916A (en) * 2007-05-18 2008-11-27 Panasonic Electric Works Co Ltd Antenna system
JP2008288915A (en) * 2007-05-18 2008-11-27 Panasonic Electric Works Co Ltd Antenna system
JP2010245789A (en) * 2009-04-03 2010-10-28 Toyota Central R&D Labs Inc Antenna device
US8836603B2 (en) 2009-04-03 2014-09-16 Toyota Jidosha Kabushiki Kaisha Antenna device
JP2011222833A (en) * 2010-04-12 2011-11-04 Canon Inc Electromagnetic wave detecting device
EP2662925B1 (en) * 2012-05-10 2018-04-04 Acer Incorporated Communication device and antenna structure therein

Also Published As

Publication number Publication date
TWI357690B (en) 2012-02-01
KR20100007975A (en) 2010-01-22
KR101145609B1 (en) 2012-05-15
JP2008288915A (en) 2008-11-27
JP4770792B2 (en) 2011-09-14
TW200913382A (en) 2009-03-16
CN101682117B (en) 2013-01-02
CN101682117A (en) 2010-03-24

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