DE3268209D1 - Tuned small loop antenna - Google Patents

Tuned small loop antenna

Info

Publication number
DE3268209D1
DE3268209D1 DE8282300926T DE3268209T DE3268209D1 DE 3268209 D1 DE3268209 D1 DE 3268209D1 DE 8282300926 T DE8282300926 T DE 8282300926T DE 3268209 T DE3268209 T DE 3268209T DE 3268209 D1 DE3268209 D1 DE 3268209D1
Authority
DE
Germany
Prior art keywords
loop antenna
small loop
tuned
tuned small
antenna
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
Application number
DE8282300926T
Other languages
English (en)
Inventor
Kazutaka Hidaka
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Application granted granted Critical
Publication of DE3268209D1 publication Critical patent/DE3268209D1/de
Expired 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
    • 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
    • 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
    • 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
    • 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
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
DE8282300926T 1981-02-27 1982-02-23 Tuned small loop antenna Expired DE3268209D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56026910A JPS57142002A (en) 1981-02-27 1981-02-27 Small-sized loop antenna

Publications (1)

Publication Number Publication Date
DE3268209D1 true DE3268209D1 (en) 1986-02-13

Family

ID=12206366

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282300926T Expired DE3268209D1 (en) 1981-02-27 1982-02-23 Tuned small loop antenna

Country Status (6)

Country Link
US (1) US4518965A (de)
EP (1) EP0060628B1 (de)
JP (1) JPS57142002A (de)
KR (1) KR860000331B1 (de)
CA (1) CA1195771A (de)
DE (1) DE3268209D1 (de)

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US6304230B1 (en) * 1999-11-04 2001-10-16 Sigem Multiple coupled resonant loop antenna
US6359594B1 (en) * 1999-12-01 2002-03-19 Logitech Europe S.A. Loop antenna parasitics reduction technique
DE10047214A1 (de) * 2000-09-23 2002-04-11 Philips Corp Intellectual Pty Schaltungsanordnung
RU2183888C1 (ru) * 2000-10-19 2002-06-20 Жастеро Трейдинг Лимитед Способ увеличения действующей высоты малогабаритного антенного устройства и малогабаритное антенное устройство для осуществления способа
JP3629448B2 (ja) 2001-07-27 2005-03-16 Ｔｄｋ株式会社 アンテナ装置及びそれを備えた電子機器
EP1495338A2 (de) * 2002-04-18 2005-01-12 Ackermann Patent GmbH Verfahren und einrichtung zum aufnehmen und aufbereiten von störfeldern und störstrahlen
JP2004328128A (ja) * 2003-04-22 2004-11-18 Alps Electric Co Ltd アンテナ装置
DE10325399A1 (de) * 2003-05-28 2004-12-30 Atmel Germany Gmbh Schaltungsanordnung zur Phasenmodulation für rückstreubasierte Transporder
CN101297437B (zh) * 2005-10-26 2012-05-23 Nxp股份有限公司 Uhf/vhf平面天线器件，尤其用于便携式电子设备
US7268735B2 (en) * 2005-12-23 2007-09-11 Chin-Yuan Chung Antenna structure
KR100797172B1 (ko) * 2006-08-08 2008-01-23 삼성전자주식회사 정합회로가 일체로 형성된 루프 안테나
US7876274B2 (en) 2007-06-21 2011-01-25 Apple Inc. Wireless handheld electronic device
GB0724692D0 (en) * 2007-12-19 2008-01-30 Rhodes Mark Antenna formed of multiple resonant loops
CN201689980U (zh) * 2010-05-04 2010-12-29 中兴通讯股份有限公司 偶极子天线及移动通信终端
CN104076672B (zh) 2010-06-11 2020-10-09 株式会社理光 信息存储装置、可拆卸装置、显影剂容器和成像设备
US9070969B2 (en) 2010-07-06 2015-06-30 Apple Inc. Tunable antenna systems
US8556178B2 (en) * 2011-03-04 2013-10-15 Hand Held Products, Inc. RFID devices using metamaterial antennas
US9166279B2 (en) 2011-03-07 2015-10-20 Apple Inc. Tunable antenna system with receiver diversity
US9246221B2 (en) 2011-03-07 2016-01-26 Apple Inc. Tunable loop antennas
US8776002B2 (en) * 2011-09-06 2014-07-08 Variable Z0, Ltd. Variable Z0 antenna device design system and method
US9350069B2 (en) 2012-01-04 2016-05-24 Apple Inc. Antenna with switchable inductor low-band tuning
US9190712B2 (en) 2012-02-03 2015-11-17 Apple Inc. Tunable antenna system
US8798554B2 (en) 2012-02-08 2014-08-05 Apple Inc. Tunable antenna system with multiple feeds
US9331397B2 (en) 2013-03-18 2016-05-03 Apple Inc. Tunable antenna with slot-based parasitic element
US9559433B2 (en) 2013-03-18 2017-01-31 Apple Inc. Antenna system having two antennas and three ports
US9444130B2 (en) 2013-04-10 2016-09-13 Apple Inc. Antenna system with return path tuning and loop element
US9531059B2 (en) 2013-05-24 2016-12-27 Microsoft Technology Licensing, Llc Side face antenna for a computing device case
US9543639B2 (en) * 2013-05-24 2017-01-10 Microsoft Technology Licensing, Llc Back face antenna in a computing device case
US9698466B2 (en) 2013-05-24 2017-07-04 Microsoft Technology Licensing, Llc Radiating structure formed as a part of a metal computing device case
WO2016121130A1 (en) * 2015-01-29 2016-08-04 Sato Holdings Kabushiki Kaisha Rfid infinity antenna
DE102018106095B3 (de) * 2017-11-29 2019-01-31 Antennentechnik Abb Bad Blankenburg Gmbh Aktive Multiband-Antenne für den terrestrischen Rundfunkempfang
CN108711669B (zh) * 2018-05-28 2021-04-23 京东方科技集团股份有限公司 一种频率可调天线及其制作方法

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US2467962A (en) * 1947-01-28 1949-04-19 Electronies Res Inc High-frequency antenna
US2551664A (en) * 1949-11-29 1951-05-08 Galper Samuel Television antenna
US2881429A (en) * 1953-06-30 1959-04-07 Gilbert B Radcliffe Indoor television antenna
DE973146C (de) * 1953-07-23 1959-12-10 Telefunken Gmbh Antennenanordnung fuer einen weiten Frequenzbereich
US3078462A (en) * 1958-07-18 1963-02-19 Julius Herman One-turn loop antenna
US3210766A (en) * 1962-02-15 1965-10-05 Ralph O Parker Slot type antenna with tuning circuit
US3588905A (en) * 1967-10-05 1971-06-28 John H Dunlavy Jr Wide range tunable transmitting loop antenna
DE2418407A1 (de) * 1967-12-12 1975-09-25 Hans Heinrich Prof Dr Meinke Antennenverstaerker
US3710337A (en) * 1970-03-24 1973-01-09 Jfd Electronics Corp Miniature tv antenna
US3641576A (en) * 1970-04-13 1972-02-08 Zenith Radio Corp Printed circuit inductive loop antenna
US3631499A (en) * 1970-08-17 1971-12-28 Edwin M Turner Electrically small double-loop antenna with distributed loading and impedance matching
US3680127A (en) * 1971-04-07 1972-07-25 Us Air Force Tunable omnidirectional antenna
GB1307648A (en) * 1971-06-17 1973-02-21 Fte Maximal Fernsehtech Circular multi-range receiving aerial assembly
US3956751A (en) * 1974-12-24 1976-05-11 Julius Herman Miniaturized tunable antenna for general electromagnetic radiation and sensing with particular application to TV and FM
JPS5441192A (en) * 1977-09-07 1979-04-02 Shizuoka Seiki Co Ltd Moister detecter for hulled rice
DE2907369C2 (de) * 1979-02-24 1984-10-18 Dornier System Gmbh, 7990 Friedrichshafen Antennenanordnung für Schleppflugkörper
US4342999A (en) * 1980-11-25 1982-08-03 Rca Corporation Loop antenna arrangements for inclusion in a television receiver

Also Published As

Publication number Publication date
KR860000331B1 (ko) 1986-04-09
EP0060628B1 (de) 1986-01-02
JPS57142002A (en) 1982-09-02
EP0060628A1 (de) 1982-09-22
US4518965A (en) 1985-05-21
CA1195771A (en) 1985-10-22
JPH0227841B2 (de) 1990-06-20
KR830009664A (ko) 1983-12-22

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition