GB1178782A - Improvements in or relating to Radio Horn Arrangements - Google Patents

Improvements in or relating to Radio Horn Arrangements

Info

Publication number
GB1178782A
GB1178782A GB352468A GB352468A GB1178782A GB 1178782 A GB1178782 A GB 1178782A GB 352468 A GB352468 A GB 352468A GB 352468 A GB352468 A GB 352468A GB 1178782 A GB1178782 A GB 1178782A
Authority
GB
United Kingdom
Prior art keywords
reflector
horns
grating
cluster
horn
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
GB352468A
Inventor
Eric Walter Anderson
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB352468A priority Critical patent/GB1178782A/en
Priority to DE19681815763 priority patent/DE1815763A1/en
Publication of GB1178782A publication Critical patent/GB1178782A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/195—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1,178,782. Aerials. MARCONI CO. Ltd. 23 Oct., 1968 [23 Jan., 1968], No. 3524/68. Heading H4A. In an aerial system a plane polarized horn 1, Fig. 1, is directed towards a reflector 2, an orthogonally polarized grating 3 being interposed. The axes of the reflector and of the grating are at an angle, and a cluster of horns 4, which are positioned outside the beam between the horn and the reflector, can illuminate the said reflector via reflection at the said grating. The grating may be planar or hyperboloidal, and it functions similarly to a subreflector in a Cassegrain type aerial comprising also the cluster of horns and the reflector. The main horn may be offset from the reflector to avoid aperture blocking (Fig. 2, not shown). The number of horns in the cluster may be four or five, arranged as a row of three with one or two laterally displaced from the centre thereof (Figs. 3 and 4, not shown). The system may be used in a tropospheric scatter link with the horns of the cluster arranged for angle diversity reception, and frequency diversity may also be provided.
GB352468A 1968-01-23 1968-01-23 Improvements in or relating to Radio Horn Arrangements Expired GB1178782A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB352468A GB1178782A (en) 1968-01-23 1968-01-23 Improvements in or relating to Radio Horn Arrangements
DE19681815763 DE1815763A1 (en) 1968-01-23 1968-12-19 Diversity antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB352468A GB1178782A (en) 1968-01-23 1968-01-23 Improvements in or relating to Radio Horn Arrangements

Publications (1)

Publication Number Publication Date
GB1178782A true GB1178782A (en) 1970-01-21

Family

ID=9759950

Family Applications (1)

Application Number Title Priority Date Filing Date
GB352468A Expired GB1178782A (en) 1968-01-23 1968-01-23 Improvements in or relating to Radio Horn Arrangements

Country Status (2)

Country Link
DE (1) DE1815763A1 (en)
GB (1) GB1178782A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001848A1 (en) * 1977-11-07 1979-05-16 Hollandse Signaalapparaten B.V. Monopulse radar apparatus
AU598822B2 (en) * 1986-07-18 1990-07-05 Siemens Telecomunicazioni S.P.A. Angular-diversity radiating system for tropospheric-scatter radio links

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176561B (en) * 1960-06-01 1964-08-20 Erich Schumm Closure tape made of flexible plastic, rubber or the like.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001848A1 (en) * 1977-11-07 1979-05-16 Hollandse Signaalapparaten B.V. Monopulse radar apparatus
AU598822B2 (en) * 1986-07-18 1990-07-05 Siemens Telecomunicazioni S.P.A. Angular-diversity radiating system for tropospheric-scatter radio links

Also Published As

Publication number Publication date
DE1815763A1 (en) 1969-08-21

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