DE69730661D1 - Schleifenantenne - Google Patents

Schleifenantenne

Info

Publication number
DE69730661D1
DE69730661D1 DE69730661T DE69730661T DE69730661D1 DE 69730661 D1 DE69730661 D1 DE 69730661D1 DE 69730661 T DE69730661 T DE 69730661T DE 69730661 T DE69730661 T DE 69730661T DE 69730661 D1 DE69730661 D1 DE 69730661D1
Authority
DE
Germany
Prior art keywords
loop antenna
antenna
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 - Lifetime
Application number
DE69730661T
Other languages
English (en)
Inventor
Hans Staufer
Michel Burri
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of DE69730661D1 publication Critical patent/DE69730661D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
DE69730661T 1996-07-23 1997-06-30 Schleifenantenne Expired - Lifetime DE69730661D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9615392A GB2315602B (en) 1996-07-23 1996-07-23 Loop antenna

Publications (1)

Publication Number Publication Date
DE69730661D1 true DE69730661D1 (de) 2004-10-21

Family

ID=10797320

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69730661T Expired - Lifetime DE69730661D1 (de) 1996-07-23 1997-06-30 Schleifenantenne

Country Status (6)

Country Link
US (1) US5945958A (de)
EP (1) EP0821430B1 (de)
JP (1) JPH1084215A (de)
CN (1) CN1175802A (de)
DE (1) DE69730661D1 (de)
GB (1) GB2315602B (de)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19753999A1 (de) * 1997-12-05 1999-06-17 Siemens Ag Tragbarer Handsender, insbesondere für ein fernbedienbares Diebstahlschutzsystem eines Kraftfahrzeugs
US6359594B1 (en) 1999-12-01 2002-03-19 Logitech Europe S.A. Loop antenna parasitics reduction technique
US6597320B2 (en) 2000-09-11 2003-07-22 Nippon Soken, Inc. Antenna for portable radio communication device and method of transmitting radio signal
FR2826784B1 (fr) * 2001-07-02 2003-10-31 Abel Franco Antenne de protection electromagnetique pour emetteur portable
FR2828016B1 (fr) * 2001-07-30 2005-03-25 Pygmalyon Antennes du genre boucle
PT102739A (pt) * 2002-03-13 2003-09-30 Gantle Trading & Services Ld Sistema de antenas para um dispositivo de leitura de transponder em radiofrequencia
SG114541A1 (en) * 2002-04-25 2005-09-28 Cet Technologies Pte Ltd An antenna
AU2002255430A1 (en) * 2002-04-25 2003-11-11 Cet Technologies Pte Ltd An antenna
FR2853432B1 (fr) * 2003-04-02 2006-05-26 Systeme de lecture sans contact de cartes a puce apposees sur des objets
US7239290B2 (en) * 2004-09-14 2007-07-03 Kyocera Wireless Corp. Systems and methods for a capacitively-loaded loop antenna
JP5065149B2 (ja) * 2008-05-15 2012-10-31 株式会社東海理化電機製作所 携帯機
JP4927781B2 (ja) * 2008-05-15 2012-05-09 株式会社東海理化電機製作所 携帯機
US7714791B2 (en) * 2008-07-02 2010-05-11 Raytheon Company Antenna with improved illumination efficiency
JP2010219916A (ja) * 2009-03-17 2010-09-30 Toshiba Tec Corp 無線タグアンテナおよび無線タグインレット
US8350695B2 (en) 2010-06-24 2013-01-08 Lojack Operating Company, Lp Body coupled antenna system and personal locator unit utilizing same
US8717242B2 (en) 2011-02-15 2014-05-06 Raytheon Company Method for controlling far field radiation from an antenna
CN104638342B (zh) * 2011-11-09 2018-02-09 株式会社村田制作所 天线装置以及电子设备
US9129200B2 (en) 2012-10-30 2015-09-08 Raytheon Corporation Protection system for radio frequency communications
US9812790B2 (en) 2014-06-23 2017-11-07 Raytheon Company Near-field gradient probe for the suppression of radio interference
US9735822B1 (en) * 2014-09-16 2017-08-15 Amazon Technologies, Inc. Low specific absorption rate dual-band antenna structure
JP6449033B2 (ja) 2015-01-28 2019-01-09 株式会社スマート 送受信センサシステム及び多機能カード、ウエアラブル機器
US11300598B2 (en) 2018-11-26 2022-04-12 Tom Lavedas Alternative near-field gradient probe for the suppression of radio frequency interference
CN112394309B (zh) * 2019-08-19 2024-02-20 西门子(深圳)磁共振有限公司 局部线圈及其制造方法及磁共振成像系统
US11984922B2 (en) 2021-11-30 2024-05-14 Raytheon Company Differential probe with single transceiver antenna

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2235163A (en) * 1938-12-15 1941-03-18 Rca Corp Broad band antenna
US2535053A (en) * 1945-06-05 1950-12-26 Michael D Ercolino Portable radio compass
US2479337A (en) * 1945-10-16 1949-08-16 Gen Electric Antenna system
NL6602498A (de) * 1966-02-25 1967-08-28
US3631499A (en) * 1970-08-17 1971-12-28 Edwin M Turner Electrically small double-loop antenna with distributed loading and impedance matching
US4160978A (en) * 1977-08-10 1979-07-10 Duhamel Raymond H Circularly polarized loop and helix panel antennas
US4433336A (en) * 1982-02-05 1984-02-21 The United States Of America As Represented By The Secretary Of Commerce Three-element antenna formed of orthogonal loops mounted on a monopole
US5225847A (en) * 1989-01-18 1993-07-06 Antenna Research Associates, Inc. Automatic antenna tuning system
DE9201543U1 (de) * 1992-02-01 1992-04-16 Marquardt, Martin, 5170 Juelich, De
US5485165A (en) * 1994-08-15 1996-01-16 The United States Of America As Represented By The Secretary Of The Army Broadband high efficiency full wave open coaxial stub loop antenna
AU691111B2 (en) * 1995-06-21 1998-05-07 Google Technology Holdings LLC Method and antenna for providing an omnidirectional pattern
US5734353A (en) * 1995-08-14 1998-03-31 Vortekx P.C. Contrawound toroidal helical antenna

Also Published As

Publication number Publication date
GB2315602A (en) 1998-02-04
CN1175802A (zh) 1998-03-11
EP0821430B1 (de) 2004-09-15
US5945958A (en) 1999-08-31
GB9615392D0 (en) 1996-09-04
EP0821430A3 (de) 1999-04-07
JPH1084215A (ja) 1998-03-31
EP0821430A2 (de) 1998-01-28
GB2315602B (en) 2000-11-29

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Legal Events

Date Code Title Description
8332 No legal effect for de