GB970274A - Improvements relating to aerials for high frequency radio waves - Google Patents

Improvements relating to aerials for high frequency radio waves

Info

Publication number
GB970274A
GB970274A GB26911/61A GB2691161A GB970274A GB 970274 A GB970274 A GB 970274A GB 26911/61 A GB26911/61 A GB 26911/61A GB 2691161 A GB2691161 A GB 2691161A GB 970274 A GB970274 A GB 970274A
Authority
GB
United Kingdom
Prior art keywords
horns
horn
transparent
aerials
overlapping
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
GB26911/61A
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Publication of GB970274A publication Critical patent/GB970274A/en
Expired legal-status Critical Current

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
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)

Abstract

970,274. Aerials. COMPAGNIE FRANCAISE THOMSON-HOUSTON. July 25, 1961 [July 26, 1960], No. 26911/61. Heading H4A. An aerial feeder comprises a pair of rectangular horns, the extremities of the adjacent wall of each horn being inside the other horn. These extremities are reflective to waves propagated by their respective horns, but transparent to waves propagated by horn into which they penetrate. Horns 2 and 3 radiate waves polarized parallel and perpendicular to the plane of Fig. 1, respectively. The overlapping portions 4, 6 of the walls have sections 13, 14, Figs. 2a and 2b comprising parallel rods or slots which are transparent to radiation from horns 3 and 2 and reflective to radiations from horns 2 and 3 respectively. The horns may be made symmetrical by the inclusion of further semi-transparent panels 7, 8, 11 and 12. The horns may radiate different wavelengths rather than different polarizations. An array of two or more overlapping horns may feed a reflector and may be combined with non-overlapping horns providing a cosec<SP>2</SP> pattern. The feeder and reflector may be rotated about a vertical axis for scaning and the horns may be energized alternately for beam switching. Specification 864,324 is referred to.
GB26911/61A 1960-07-26 1961-07-25 Improvements relating to aerials for high frequency radio waves Expired GB970274A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR833982 1960-07-26

Publications (1)

Publication Number Publication Date
GB970274A true GB970274A (en) 1964-09-16

Family

ID=8736213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26911/61A Expired GB970274A (en) 1960-07-26 1961-07-25 Improvements relating to aerials for high frequency radio waves

Country Status (2)

Country Link
FR (1) FR1271598A (en)
GB (1) GB970274A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130154A2 (en) * 1983-06-23 1985-01-02 CONTRAVES ITALIANA S.p.A. Multi-shaped-beam reflector antenna

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2638531B1 (en) * 1988-10-28 1992-03-20 Thomson Csf SUM AND DIFFERENCE INTEGRATION SYSTEM I.F.F. IN A RADAR SURVEILLANCE ANTENNA

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0130154A2 (en) * 1983-06-23 1985-01-02 CONTRAVES ITALIANA S.p.A. Multi-shaped-beam reflector antenna
EP0130154A3 (en) * 1983-06-23 1986-05-07 CONTRAVES ITALIANA S.p.A. Multi-shaped-beam reflector antenna

Also Published As

Publication number Publication date
FR1271598A (en) 1962-01-19

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