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

Improvements in or relating to spiral antennas.

Info

Publication number: GB2207556B
Authority: GB; United Kingdom
Prior art keywords: relating; spiral antennas; antennas; spiral
Prior art date: 1986-04-12
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.)

1986-04-12

Filing date

1986-04-12

Publication date

1989-11-29

1986-04-12 Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd

1986-04-12 Priority to GB8608970A priority Critical patent/GB2207556B/en

1987-04-13 Priority to NL8715005A priority patent/NL8715005A/en

1987-04-13 Priority to DE19873739205 priority patent/DE3739205A1/en

1987-11-04 Priority to FR8715402A priority patent/FR2627016A1/fr

1988-01-20 Priority to IT8819128A priority patent/IT1233844B/en

1988-02-11 Priority to SE8800463A priority patent/SE8800463L/en

1989-02-01 Publication of GB2207556A publication Critical patent/GB2207556A/en

1989-11-29 Application granted granted Critical

1989-11-29 Publication of GB2207556B publication Critical patent/GB2207556B/en

Status 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.
NL8715005A NL8715005A (en)	1986-04-12	1987-04-13	IMPROVEMENTS IN OR RELATED TO SPIRAL ANTENNA.
DE19873739205 DE3739205A1 (en)	1986-04-12	1987-04-13	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

1986
- 1986-04-12 GB GB8608970A patent/GB2207556B/en not_active Expired
1987
- 1987-04-13 DE DE19873739205 patent/DE3739205A1/en not_active Withdrawn
- 1987-04-13 NL NL8715005A patent/NL8715005A/en not_active Application Discontinuation
- 1987-11-04 FR FR8715402A patent/FR2627016A1/fr active Pending
1988
- 1988-01-20 IT IT8819128A patent/IT1233844B/en active
- 1988-02-11 SE SE8800463A patent/SE8800463L/en not_active Application Discontinuation

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

Legal Events

Date	Code	Title	Description
1990-11-21	732	Registration of transactions, instruments or events in the register (sect. 32/1977)
1994-12-07	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19940412

Publication	Publication Date	Title
DE3762303D1 (en)	1990-05-23	Suessstoff.
GB8628599D0 (en)	1987-01-07	Antenna
GB8700223D0 (en)	1987-02-11	Antenna
DE3761369D1 (en)	1990-02-15	Foerderer.
GB8700224D0 (en)	1987-02-11	Antenna
GB2187316B (en)	1989-11-29	Improvements in or relating to integrate circuits.
GB8618086D0 (en)	1986-09-03	Antenna
GB2195945B (en)	1990-01-24	Improvements in shaping
GB2251339B (en)	1992-11-11	Antenna arrangement
GB2196483B (en)	1990-03-28	Antenna construction
GB2191044B (en)	1989-12-13	Antenna arrangement
DE3676084D1 (en)	1991-01-17	Oelablassvorrichtung.
DE3761684D1 (en)	1990-03-15	Stirling-motor.
GB2207556B (en)	1989-11-29	Improvements in or relating to spiral antennas.
GB2192757B (en)	1990-08-15	Antenna
GB8616250D0 (en)	1986-08-13	Antenna
EP0152570A3 (en)	1987-09-16	Gaslaser, in particular te-laser
GB8616576D0 (en)	1986-08-13	Dipole
GB2185636B (en)	1989-10-25	Antennas
GB8609961D0 (en)	1986-05-29	Flika whip
GB2188786B (en)	1989-11-29	Improvements in or relating to pulse-shapers
DE3761774D1 (en)	1990-04-05	Buegelstuetze.
DE3680513D1 (en)	1991-08-29	Prokaryotisches expressionssystem.
DE3667467D1 (en)	1990-01-18	Sulfidoxymolybden-dialkylphosphorodithioate.
AR240537A1 (en)	1990-05-31	Improvements in cutlery