GB2216726B - Small antenna - Google Patents

Small antenna

Info

Publication number
GB2216726B
GB2216726B GB8904960A GB8904960A GB2216726B GB 2216726 B GB2216726 B GB 2216726B GB 8904960 A GB8904960 A GB 8904960A GB 8904960 A GB8904960 A GB 8904960A GB 2216726 B GB2216726 B GB 2216726B
Authority
GB
United Kingdom
Prior art keywords
small antenna
antenna
small
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
GB8904960A
Other languages
English (en)
Other versions
GB8904960D0 (en
GB2216726A (en
Inventor
Katsumi Ushiyama
Sadafumi Sakamoto
Kiyohiko Itoh
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.)
Kokusai Denki Electric Inc
Original Assignee
Kokusai Electric 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 Kokusai Electric Co Ltd filed Critical Kokusai Electric Co Ltd
Publication of GB8904960D0 publication Critical patent/GB8904960D0/en
Publication of GB2216726A publication Critical patent/GB2216726A/en
Application granted granted Critical
Publication of GB2216726B publication Critical patent/GB2216726B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • 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
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
GB8904960A 1988-03-28 1989-03-03 Small antenna Expired - Lifetime GB2216726B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63075352A JPH01246904A (ja) 1988-03-28 1988-03-28 小形アンテナ

Publications (3)

Publication Number Publication Date
GB8904960D0 GB8904960D0 (en) 1989-04-12
GB2216726A GB2216726A (en) 1989-10-11
GB2216726B true GB2216726B (en) 1991-12-11

Family

ID=13573762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8904960A Expired - Lifetime GB2216726B (en) 1988-03-28 1989-03-03 Small antenna

Country Status (3)

Country Link
US (1) US5023621A (OSRAM)
JP (1) JPH01246904A (OSRAM)
GB (1) GB2216726B (OSRAM)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01245721A (ja) * 1988-03-28 1989-09-29 Matsushita Electric Works Ltd 無線装置
JPH02116228A (ja) * 1988-10-26 1990-04-27 Nec Corp 携帯用無線機
US5589840A (en) * 1991-11-05 1996-12-31 Seiko Epson Corporation Wrist-type wireless instrument and antenna apparatus
US5268699A (en) * 1992-09-24 1993-12-07 Motorola, Inc. Data communication receiver utilizing a loop antenna having a hinged connection
WO1994008361A1 (en) * 1992-09-30 1994-04-14 Motorola, Inc. Low profile antenna system for a card-like communication receiver
US5410749A (en) * 1992-12-09 1995-04-25 Motorola, Inc. Radio communication device having a microstrip antenna with integral receiver systems
US5325403A (en) * 1992-12-09 1994-06-28 Motorola, Inc. Method and apparatus for dual-channel diversity reception of a radio signal
US5446922A (en) * 1992-12-21 1995-08-29 Motorola, Inc. Method and apparatus for switched diversity reception of a radio signal
GB2276274B (en) * 1993-03-17 1997-10-22 Seiko Epson Corp Slot antenna device
US5757326A (en) * 1993-03-29 1998-05-26 Seiko Epson Corporation Slot antenna device and wireless apparatus employing the antenna device
US6034638A (en) * 1993-05-27 2000-03-07 Griffith University Antennas for use in portable communications devices
JP3417083B2 (ja) * 1994-10-04 2003-06-16 セイコーエプソン株式会社 携帯用無線機
US5969680A (en) * 1994-10-11 1999-10-19 Murata Manufacturing Co., Ltd. Antenna device having a radiating portion provided between a wiring substrate and a case
US6288682B1 (en) 1996-03-14 2001-09-11 Griffith University Directional antenna assembly
JPH1065437A (ja) * 1996-08-21 1998-03-06 Saitama Nippon Denki Kk 板状逆ｆアンテナおよび無線装置
AU4459497A (en) * 1996-09-23 1998-04-17 Lutz Rothe Mobile radiotelephony planar antenna
FI114259B (fi) * 1999-07-14 2004-09-15 Filtronic Lk Oy Radiotaajuisen etupään rakenne
JP4529064B2 (ja) * 2001-05-15 2010-08-25 ソニー株式会社 アンテナ装置及び無線通信装置
FI119668B (fi) * 2005-05-12 2009-01-30 Valtion Teknillinen Antennirakenne esimerkiksi etätunnistinjärjestelmää varten
TW201134000A (en) * 2010-03-16 2011-10-01 Chi Mei Comm Systems Inc Wireless communication device
US9070969B2 (en) 2010-07-06 2015-06-30 Apple Inc. Tunable antenna systems
US9246221B2 (en) 2011-03-07 2016-01-26 Apple Inc. Tunable loop antennas
US9350069B2 (en) 2012-01-04 2016-05-24 Apple Inc. Antenna with switchable inductor low-band tuning
GB2543985B (en) * 2012-06-28 2017-10-11 Murata Manufacturing Co Antenna device, feed element, and communication terminal device
CN107210529B (zh) * 2015-01-29 2020-06-26 佐藤控股株式会社 Rfid无限天线
JP6839159B2 (ja) * 2018-11-15 2021-03-03 サトーホールディングス株式会社 Ｒｆｉｄ無限アンテナ
EP3977558A1 (en) * 2019-05-29 2022-04-06 Robert Bosch GmbH An antenna system
DE102019135227A1 (de) 2019-12-19 2021-06-24 Becker Mining Systems AG Not-Halt-Schalter und Maschine mit Not-Halt-Schalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147744A (en) * 1983-10-04 1985-05-15 Dassault Electronique A radiating device with an improved microstrip structure and its application to an adaptable antenna
EP0176311A2 (en) * 1984-09-17 1986-04-02 Matsushita Electric Industrial Co., Ltd. Small antenna
GB2227370A (en) * 1988-11-04 1990-07-25 Kokusai Electric Co Ltd Antenna

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736591A (en) * 1970-10-30 1973-05-29 Motorola Inc Receiving antenna for miniature radio receiver
US4053895A (en) * 1976-11-24 1977-10-11 The United States Of America As Represented By The Secretary Of The Air Force Electronically scanned microstrip antenna array
JPS5596703A (en) * 1979-01-16 1980-07-23 Sony Corp Antenna unit
US4254775A (en) * 1979-07-02 1981-03-10 Mieczyslaw Mirowski Implantable defibrillator and package therefor
US4367474A (en) * 1980-08-05 1983-01-04 The United States Of America As Represented By The Secretary Of The Army Frequency-agile, polarization diverse microstrip antennas and frequency scanned arrays
US4379296A (en) * 1980-10-20 1983-04-05 The United States Of America As Represented By The Secretary Of The Army Selectable-mode microstrip antenna and selectable-mode microstrip antenna arrays
SE453702B (sv) * 1981-09-07 1988-02-22 Nippon Telegraph & Telephone Mikrostripantenn for ett riktningsdiversitetskommunikationssystem
DE3150235A1 (de) * 1981-12-18 1983-06-30 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Passives strahlerelement
JPS58141006A (ja) * 1982-02-17 1983-08-22 Nippon Telegr & Teleph Corp <Ntt> 円偏波ダイバ−シチアンテナ
JPS59108404A (ja) * 1982-12-14 1984-06-22 Taiyo Musen Kk 方向探知機の空中線装置
DE3465840D1 (en) * 1983-03-19 1987-10-08 Nec Corp Double loop antenna
JPS607204A (ja) * 1983-06-27 1985-01-16 Toyo Commun Equip Co Ltd 小型無線機のアンテナ
JPS60239106A (ja) * 1984-05-14 1985-11-28 Matsushita Electric Ind Co Ltd スロツトアンテナ
JPH0524693A (ja) * 1991-07-23 1993-02-02 Nisca Corp シート送り装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147744A (en) * 1983-10-04 1985-05-15 Dassault Electronique A radiating device with an improved microstrip structure and its application to an adaptable antenna
EP0176311A2 (en) * 1984-09-17 1986-04-02 Matsushita Electric Industrial Co., Ltd. Small antenna
GB2227370A (en) * 1988-11-04 1990-07-25 Kokusai Electric Co Ltd Antenna

Also Published As

Publication number Publication date
JPH01246904A (ja) 1989-10-02
GB8904960D0 (en) 1989-04-12
GB2216726A (en) 1989-10-11
US5023621A (en) 1991-06-11
JPH0588003B2 (OSRAM) 1993-12-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee