GB1004318A - Improvements in or relating to radio antennas and feeds therefor - Google Patents
Improvements in or relating to radio antennas and feeds thereforInfo
- Publication number
- GB1004318A GB1004318A GB42786/61A GB4278661A GB1004318A GB 1004318 A GB1004318 A GB 1004318A GB 42786/61 A GB42786/61 A GB 42786/61A 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
- annular
- 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
Links
- 230000005540 biological transmission Effects 0.000 abstract 4
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
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
- H01Q19/15—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 line source, e.g. leaky waveguide antennas
Landscapes
- Aerials With Secondary Devices (AREA)
- Waveguide Aerials (AREA)
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.
Applications Claiming Priority (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 |
---|---|---|---|
GB42786/61A 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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Also Published As
Publication number | Publication date |
---|---|
SE300121B (en) | 1968-04-08 |
NL272285A (en) | |
US3162858A (en) | 1964-12-22 |
DE1245447B (en) | 1967-07-27 |
BE611501A (en) | 1962-03-30 |
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