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JP3046233B2 - 薄型受信装置並びに送信装置 - Google Patents

薄型受信装置並びに送信装置

Info

Publication number
JP3046233B2
JP3046233B2 JP7335182A JP33518295A JP3046233B2 JP 3046233 B2 JP3046233 B2 JP 3046233B2 JP 7335182 A JP7335182 A JP 7335182A JP 33518295 A JP33518295 A JP 33518295A JP 3046233 B2 JP3046233 B2 JP 3046233B2
Authority
JP
Japan
Prior art keywords
loop antenna
housing
thin
stray capacitance
loop
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP7335182A
Other languages
English (en)
Japanese (ja)
Other versions
JPH09181520A (ja
Inventor
泰寛 石崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7335182A priority Critical patent/JP3046233B2/ja
Priority to TW085115218A priority patent/TW362306B/zh
Priority to GB9625970A priority patent/GB2308745B/en
Priority to FI965170A priority patent/FI965170L/fi
Priority to CN96121392.2A priority patent/CN1084937C/zh
Publication of JPH09181520A publication Critical patent/JPH09181520A/ja
Application granted granted Critical
Publication of JP3046233B2 publication Critical patent/JP3046233B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3833—Hand-held transceivers

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Support Of Aerials (AREA)
  • Details Of Aerials (AREA)
  • Transmitters (AREA)
  • Burglar Alarm Systems (AREA)
JP7335182A 1995-12-22 1995-12-22 薄型受信装置並びに送信装置 Expired - Fee Related JP3046233B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP7335182A JP3046233B2 (ja) 1995-12-22 1995-12-22 薄型受信装置並びに送信装置
TW085115218A TW362306B (en) 1995-12-22 1996-12-09 Thin-type of receiver and transmitter apparatus
GB9625970A GB2308745B (en) 1995-12-22 1996-12-13 Receiving apparatus and transmitting apparatus in a thin form
FI965170A FI965170L (fi) 1995-12-22 1996-12-20 Ohut vastaanotinlaitteisto ja lähetinlaitteisto
CN96121392.2A CN1084937C (zh) 1995-12-22 1996-12-21 薄型接收装置和发送装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7335182A JP3046233B2 (ja) 1995-12-22 1995-12-22 薄型受信装置並びに送信装置

Publications (2)

Publication Number Publication Date
JPH09181520A JPH09181520A (ja) 1997-07-11
JP3046233B2 true JP3046233B2 (ja) 2000-05-29

Family

ID=18285681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7335182A Expired - Fee Related JP3046233B2 (ja) 1995-12-22 1995-12-22 薄型受信装置並びに送信装置

Country Status (5)

Country Link
JP (1) JP3046233B2 (zh)
CN (1) CN1084937C (zh)
FI (1) FI965170L (zh)
GB (1) GB2308745B (zh)
TW (1) TW362306B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009004666A1 (ja) * 2007-06-29 2009-01-08 Fujitsu Limited ループアンテナ

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9806612D0 (en) * 1998-03-28 1998-05-27 Philips Electronics Nv Communication device
JP3643488B2 (ja) * 1998-10-30 2005-04-27 株式会社日立製作所 Ｉｃカード
NO313975B1 (no) * 2000-02-08 2003-01-06 Q Free Asa Antenne for transponder
GB0115023D0 (en) * 2001-06-20 2001-08-08 Univ Belfast Improvements relating to antennas
JP2004013427A (ja) 2002-06-05 2004-01-15 Toshiba Corp 無線カード
US7421973B2 (en) 2003-11-06 2008-09-09 Axcelis Technologies, Inc. System and method for performing SIMOX implants using an ion shower
US7748344B2 (en) * 2003-11-06 2010-07-06 Axcelis Technologies, Inc. Segmented resonant antenna for radio frequency inductively coupled plasmas
JP3790249B2 (ja) 2004-01-13 2006-06-28 株式会社東芝 ループアンテナ及びループアンテナを備えた無線通信機
US7239290B2 (en) 2004-09-14 2007-07-03 Kyocera Wireless Corp. Systems and methods for a capacitively-loaded loop antenna
US20080048867A1 (en) * 2006-01-18 2008-02-28 Oliver Ronald A Discontinuous-Loop RFID Reader Antenna And Methods
USD570337S1 (en) 2006-08-25 2008-06-03 Impinj, Inc. Broken-loop RFID reader antenna for near field and far field UHF RFID tags
EP2118965B1 (en) * 2007-01-12 2011-05-04 Aida Centre, S.L. Self-resonant electrically small antenna
WO2009033087A1 (en) * 2007-09-06 2009-03-12 Deka Products Limited Partnership Rfid system and method
KR100906915B1 (ko) * 2007-10-15 2009-07-08 엘지이노텍 주식회사 안테나
DE202007015189U1 (de) * 2007-10-31 2009-03-12 Kiontke, Siegfried, Dr. Niederfrequente magnetische Breitbandantenne
JP2008090863A (ja) * 2007-12-11 2008-04-17 Hitachi Chem Co Ltd Ｉｃカード
JP4314591B2 (ja) * 2007-12-11 2009-08-19 日立化成工業株式会社 Ｉｃカード
JP4314592B2 (ja) * 2007-12-11 2009-08-19 日立化成工業株式会社 Ｉｃカード
JP4556002B2 (ja) * 2008-10-14 2010-10-06 日立化成工業株式会社 非接触式ｉｃカード
JP2010277609A (ja) * 2010-09-01 2010-12-09 Hitachi Chem Co Ltd Ｉｃカード
JP7343045B2 (ja) * 2020-04-27 2023-09-12 株式会社村田製作所 Ｒｆｉｄタグ通信装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004228A (en) * 1974-04-29 1977-01-18 Integrated Electronics, Ltd. Portable transmitter
GB2100063B (en) * 1981-06-05 1985-03-13 Tokyo Shibaura Electric Co Antenna
JPH0777324B2 (ja) * 1988-03-23 1995-08-16 セイコーエプソン株式会社 腕装着型無線機

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009004666A1 (ja) * 2007-06-29 2009-01-08 Fujitsu Limited ループアンテナ

Also Published As

Publication number Publication date
CN1158014A (zh) 1997-08-27
GB2308745B (en) 1997-12-10
TW362306B (en) 1999-06-21
GB9625970D0 (en) 1997-01-29
JPH09181520A (ja) 1997-07-11
FI965170L (fi) 1997-06-23
GB2308745A (en) 1997-07-02
CN1084937C (zh) 2002-05-15
FI965170A0 (fi) 1996-12-20

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees