GB1248187A - Improvements in or relating to aerial systems - Google Patents

Improvements in or relating to aerial systems

Info

Publication number
GB1248187A
GB1248187A GB2433470A GB2433470A GB1248187A GB 1248187 A GB1248187 A GB 1248187A GB 2433470 A GB2433470 A GB 2433470A GB 2433470 A GB2433470 A GB 2433470A GB 1248187 A GB1248187 A GB 1248187A
Authority
GB
United Kingdom
Prior art keywords
reflector
recess
depth
sub
diameter
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
GB2433470A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1248187A publication Critical patent/GB1248187A/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
    • H01Q19/12—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 wherein the surfaces are concave
    • H01Q19/13—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 wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/134—Rear-feeds; Splash plate feeds

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

1,248,187. Aerials. LICENTIA PATENT VERWALTUNGS G.m.b.H. 20 May, 1970 16 Aug., 1969], No. 24334/70. Heading H4A. In an aerial system comprising a dipole radiator 8 and a parabolic or other main reflector, there is provided a sub-reflector 1 in the form of an open pot. A shallow recess 3 is formed in the closed end of the reflector 1 through which is extended the outer conductor 4 of a coaxial feeder 5 for the dipole 8. The bottom 14 of the recess 3 may be bonded to the outer conductor 4 or an adjustment means 11 may be provided, so that the reflector 1 is movable along the feeder and can be locked in a desired position. It is stated that the arrangement improves impedance matching and the rotational symmetry of the radiation diagram. Satisfactory dimensions in terms of #, the wavelength at the mean operating frequency, are given as: depth and diameter of sub-reflector, #/4 and #, respectively; depth and diameter of recess 0À04# and #/2, respectively.
GB2433470A 1969-08-16 1970-05-20 Improvements in or relating to aerial systems Expired GB1248187A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691941713 DE1941713C3 (en) 1969-08-16 1969-08-16 Adapted exciter for reflector antennas

Publications (1)

Publication Number Publication Date
GB1248187A true GB1248187A (en) 1971-09-29

Family

ID=5742968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2433470A Expired GB1248187A (en) 1969-08-16 1970-05-20 Improvements in or relating to aerial systems

Country Status (2)

Country Link
DE (1) DE1941713C3 (en)
GB (1) GB1248187A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120855A (en) * 1980-12-22 1983-12-07 Cyril Victor Bunny Jemcy conical receiving antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120855A (en) * 1980-12-22 1983-12-07 Cyril Victor Bunny Jemcy conical receiving antenna

Also Published As

Publication number Publication date
DE1941713A1 (en) 1971-02-25
DE1941713B2 (en) 1980-04-17
DE1941713C3 (en) 1980-12-11

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