GB1004318A - Improvements in or relating to radio antennas and feeds therefor - Google Patents

Improvements in or relating to radio antennas and feeds therefor

Info

Publication number
GB1004318A
GB1004318A GB4278661A GB4278661A GB1004318A GB 1004318 A GB1004318 A GB 1004318A GB 4278661 A GB4278661 A GB 4278661A GB 4278661 A GB4278661 A GB 4278661A GB 1004318 A GB1004318 A GB 1004318A
Authority
GB
United Kingdom
Prior art keywords
transmission line
walls
gap
feed
shown
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
GB4278661A
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.)
Western Electric Co Inc
Original Assignee
Western Electric Co Inc
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
Priority to US76943A priority Critical patent/US3162858A/en
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1004318A publication Critical patent/GB1004318A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10Combinations 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
    • H01Q19/12Combinations 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
    • H01Q19/15Combinations 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 line source, e.g. leaky waveguide antennas

Abstract

1,004,318. Aerials. WESTERN ELECTRIC CO. Inc. Nov. 29, 1961 [Dec. 19, 1960], No. 42786/61. Heading H4A. An annular feed 10 for a paraboloidal aerial reflector 36 having a ring focus of the type disclosed in Specification 626,311, comprises a circular waveguide 18 coupled by a gap 22 to a radial transmission line 38 formed by two conical walls or two parallel discs, Figs. 3 and 5 (not shown), means being provided for causing the energy transmitted through the transmission line 38 to be uniform in intensity, phase and polarization around the axis of the reflector. As described, this is achieved by choice of the width of the gap 22 and the positions of an iris 20 and reflecting piston 24 in the waveguide 18 and also by the provision on the inner surfaces of the walls of the radial transmission line 38 of #/4 deep corrugations 40 or a dielectric coating, Fig. 5 (not shown), to inhibit the flow of radial currents in the walls, thus presenting the same surface characteristics to both the electric and magnetic fields. Such a feed is responsive to signals linearly polarized in any direction and to circularly polarized signals. The two portions of the feed 10 separated by the gap 22 are interconnected by an annular dielectric lens 42 which acts as a phase trimmer and in Fig. 4 (not shown) there is an annular step discontinuity in the walls of the transmission line 38 to form a box horn aperture.
GB4278661A 1960-12-19 1961-11-29 Improvements in or relating to radio antennas and feeds therefor Expired GB1004318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US76943A US3162858A (en) 1960-12-19 1960-12-19 Ring focus antenna feed

Publications (1)

Publication Number Publication Date
GB1004318A true GB1004318A (en) 1965-09-15

Family

ID=22135131

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4278661A Expired GB1004318A (en) 1960-12-19 1961-11-29 Improvements in or relating to radio antennas and feeds therefor

Country Status (6)

Country Link
US (1) US3162858A (en)
BE (1) BE611501A (en)
DE (1) DE1245447B (en)
GB (1) GB1004318A (en)
NL (1) NL272285A (en)
SE (1) SE300121B (en)

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US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
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GB2331185B (en) * 1983-03-05 1999-09-22 Emi Ltd Antenna arrangement
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US3162858A (en) 1964-12-22
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DE1245447B (en) 1967-07-27
SE300121B (en) 1968-04-08
NL272285A (en)
BE611501A (en) 1962-03-30

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