GB2207556B - Improvements in or relating to spiral antennas. - Google Patents

Improvements in or relating to spiral antennas.

Info

Publication number
GB2207556B
GB2207556B GB8608970A GB8608970A GB2207556B GB 2207556 B GB2207556 B GB 2207556B GB 8608970 A GB8608970 A GB 8608970A GB 8608970 A GB8608970 A GB 8608970A GB 2207556 B GB2207556 B GB 2207556B
Authority
GB
United Kingdom
Prior art keywords
relating
spiral antennas
antennas
spiral
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
GB8608970A
Other versions
GB2207556A (en
Inventor
Laurance William Dicken
Jonathan Roy Ladbrooke
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8608970A priority Critical patent/GB2207556B/en
Priority to DE19873739205 priority patent/DE3739205A1/en
Priority to NL8715005A priority patent/NL8715005A/en
Priority to FR8715402A priority patent/FR2627016A1/fr
Priority to IT8819128A priority patent/IT1233844B/en
Priority to SE8800463A priority patent/SE8800463L/en
Publication of GB2207556A publication Critical patent/GB2207556A/en
Application granted granted Critical
Publication of GB2207556B publication Critical patent/GB2207556B/en
Expired 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
    • H01Q9/16—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
GB8608970A 1986-04-12 1986-04-12 Improvements in or relating to spiral antennas. Expired GB2207556B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB8608970A GB2207556B (en) 1986-04-12 1986-04-12 Improvements in or relating to spiral antennas.
DE19873739205 DE3739205A1 (en) 1986-04-12 1987-04-13 SPIRAL ANTENNA
NL8715005A NL8715005A (en) 1986-04-12 1987-04-13 IMPROVEMENTS IN OR RELATED TO SPIRAL ANTENNA.
FR8715402A FR2627016A1 (en) 1986-04-12 1987-11-04
IT8819128A IT1233844B (en) 1986-04-12 1988-01-20 IMPROVEMENTS IN, OR RELATED TO SPIRAL ANTENNAS
SE8800463A SE8800463L (en) 1986-04-12 1988-02-11 helix antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8608970A GB2207556B (en) 1986-04-12 1986-04-12 Improvements in or relating to spiral antennas.

Publications (2)

Publication Number Publication Date
GB2207556A GB2207556A (en) 1989-02-01
GB2207556B true GB2207556B (en) 1989-11-29

Family

ID=10596117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8608970A Expired GB2207556B (en) 1986-04-12 1986-04-12 Improvements in or relating to spiral antennas.

Country Status (6)

Country Link
DE (1) DE3739205A1 (en)
FR (1) FR2627016A1 (en)
GB (1) GB2207556B (en)
IT (1) IT1233844B (en)
NL (1) NL8715005A (en)
SE (1) SE8800463L (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929879A1 (en) 1999-06-29 2001-01-18 Bosch Gmbh Robert Spiral antenna
DE10108993B4 (en) 2001-02-23 2004-12-16 Endress + Hauser Gmbh + Co. Kg Device for determining the level of a product in a container
DE202013002682U1 (en) 2013-03-20 2013-04-26 Cetecom Gmbh Circular polarized broadband antenna and arrangement of the same in a low-reflection space
DE102013004774B3 (en) * 2013-03-20 2014-09-25 Cetecom Gmbh Circular polarized broadband antenna and arrangement of the same in a low-reflection space

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1533463A (en) * 1975-03-06 1978-11-22 Harris Corp Direct fed spiral antenna

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344425A (en) * 1966-06-13 1967-09-26 James E Webb Monopulse tracking system
DE2452703A1 (en) * 1974-11-06 1976-05-13 Harris Corp Aerial array with direction adjustment acting as relay - matrix of composite elements has circular polarisation with angular displacement
US4315266A (en) * 1980-07-25 1982-02-09 Nasa Spiral slotted phased antenna array
US4396921A (en) * 1981-10-30 1983-08-02 Raytheon Company Matching section for multi-arm spiral antenna

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1533463A (en) * 1975-03-06 1978-11-22 Harris Corp Direct fed spiral antenna

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ion July 196 *
IRE Transact *

Also Published As

Publication number Publication date
NL8715005A (en) 1989-04-03
DE3739205A1 (en) 1989-06-01
SE8800463L (en) 1989-03-10
GB2207556A (en) 1989-02-01
IT1233844B (en) 1992-04-21
SE8800463D0 (en) 1988-02-11
FR2627016A1 (en) 1989-08-11
IT8819128A0 (en) 1988-01-20

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940412