IT8468257A0 - Antenna a doppio modo di funzionamento - Google Patents

Antenna a doppio modo di funzionamento

Info

Publication number
IT8468257A0
IT8468257A0 IT8468257A IT6825784A IT8468257A0 IT 8468257 A0 IT8468257 A0 IT 8468257A0 IT 8468257 A IT8468257 A IT 8468257A IT 6825784 A IT6825784 A IT 6825784A IT 8468257 A0 IT8468257 A0 IT 8468257A0
Authority
IT
Italy
Prior art keywords
antenna
dual mode
dual
mode
Prior art date
Application number
IT8468257A
Other languages
English (en)
Other versions
IT1179878B (it
Inventor
William G Hoover
Original Assignee
Granger Ass 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 Granger Ass Inc filed Critical Granger Ass Inc
Publication of IT8468257A0 publication Critical patent/IT8468257A0/it
Application granted granted Critical
Publication of IT1179878B publication Critical patent/IT1179878B/it

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/04—Multimode antennas
    • 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
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27—Spiral antennas
    • 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
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface
IT68257/84A 1983-12-19 1984-12-18 Antenna a doppio modo di funzionamento IT1179878B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/563,288 US4635070A (en) 1983-12-19 1983-12-19 Dual mode antenna having simultaneous operating modes

Publications (2)

Publication Number Publication Date
IT8468257A0 true IT8468257A0 (it) 1984-12-18
IT1179878B IT1179878B (it) 1987-09-16

Family

ID=24249912

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68257/84A IT1179878B (it) 1983-12-19 1984-12-18 Antenna a doppio modo di funzionamento

Country Status (10)

Country Link
US (1) US4635070A (it)
JP (1) JPS60186103A (it)
AU (1) AU577340B2 (it)
ES (1) ES8608237A1 (it)
GB (1) GB2151852B (it)
GR (1) GR82498B (it)
IN (1) IN163603B (it)
IT (1) IT1179878B (it)
PT (1) PT79706A (it)
ZA (1) ZA849845B (it)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5189434A (en) * 1989-03-21 1993-02-23 Antenna Products Corp. Multi-mode antenna system having plural radiators coupled via hybrid circuit modules
EP0465658B1 (en) * 1990-01-08 1996-10-16 Toyo Communication Equipment Co. Ltd. Four-wire fractional winding helical antenna and manufacturing method thereof
GB2242569B (en) * 1990-03-26 1994-01-19 Luke Frank Wright A conical multi-plate capacitor
JP2696261B2 (ja) * 1990-06-26 1998-01-14 アルプス電気株式会社 アンテナ
US5990845A (en) 1997-07-02 1999-11-23 Tci International Broadband fan cone direction finding antenna and array
US5995057A (en) * 1998-05-27 1999-11-30 Trw Inc. Dual mode horn reflector antenna
US6346920B2 (en) 1999-07-16 2002-02-12 Eugene D. Sharp Broadband fan cone direction finding antenna and array
US6747605B2 (en) 2001-05-07 2004-06-08 Atheros Communications, Inc. Planar high-frequency antenna
US6741219B2 (en) 2001-07-25 2004-05-25 Atheros Communications, Inc. Parallel-feed planar high-frequency antenna
US6734828B2 (en) 2001-07-25 2004-05-11 Atheros Communications, Inc. Dual band planar high-frequency antenna
US9784041B2 (en) * 2004-04-15 2017-10-10 National Oilwell Varco L.P. Drilling rig riser identification apparatus
JP7516035B2 (ja) 2019-12-10 2024-07-16 シチズン時計株式会社 加工装置、加工方法および切削工具

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392395A (en) * 1961-05-22 1968-07-09 Hazeltine Research Inc Monopulse antenna system providing independent control in a plurality of modes of operation
US3396398A (en) * 1964-08-25 1968-08-06 Antenna Res Associates Inc Small unidirectional antenna array employing spaced electrically isolated antenna elements
FR1432749A (fr) * 1965-02-11 1966-03-25 Csf Système de goniométrie à large bande
GB1095907A (en) * 1965-12-08 1967-12-20 Marconi Co Ltd Improvements in or relating to radio receiving and transmitting systems
GB1367467A (en) * 1971-03-26 1974-09-18 Marconi Co Ltd Switching systems
US4103304A (en) * 1973-04-20 1978-07-25 Litton Systems, Inc. Direction locating system
US4101901A (en) * 1975-12-22 1978-07-18 Motorola, Inc. Interleaved antenna array for use in a multiple input antenna system
US4316192A (en) * 1979-11-01 1982-02-16 The Bendix Corporation Beam forming network for butler matrix fed circular array
US4414550A (en) * 1981-08-04 1983-11-08 The Bendix Corporation Low profile circular array antenna and microstrip elements therefor
US4425567A (en) * 1981-09-28 1984-01-10 The Bendix Corporation Beam forming network for circular array antennas
US4498084A (en) * 1982-12-30 1985-02-05 Granger Associates Four wire dual mode spiral antenna

Also Published As

Publication number Publication date
PT79706A (en) 1985-01-01
GB2151852A (en) 1985-07-24
ES538740A0 (es) 1986-06-01
IN163603B (it) 1988-10-15
AU3691384A (en) 1985-07-04
IT1179878B (it) 1987-09-16
GB8431845D0 (en) 1985-01-30
US4635070A (en) 1987-01-06
GR82498B (en) 1985-04-19
ZA849845B (en) 1985-10-30
ES8608237A1 (es) 1986-06-01
GB2151852B (en) 1987-11-25
AU577340B2 (en) 1988-09-22
JPS60186103A (ja) 1985-09-21

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961227