GB818661A - Improvements in feed systems for broad band antenna - Google Patents

Improvements in feed systems for broad band antenna

Info

Publication number
GB818661A
GB818661A GB32450/57A GB3245057A GB818661A GB 818661 A GB818661 A GB 818661A GB 32450/57 A GB32450/57 A GB 32450/57A GB 3245057 A GB3245057 A GB 3245057A GB 818661 A GB818661 A GB 818661A
Authority
GB
United Kingdom
Prior art keywords
horn
reflector
energy
oct
size
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
GB32450/57A
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.)
General Bronze Corp
Original Assignee
General Bronze Corp
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 General Bronze Corp filed Critical General Bronze Corp
Publication of GB818661A publication Critical patent/GB818661A/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
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/025—Means for reducing undesirable effects for optimizing the matching of the primary feed, e.g. vertex plates
    • 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)
  • Waveguide Aerials (AREA)

Abstract

818,661. Aerials; aerial coupling arrangements. GENERAL BRONZE CORPORATION. Oct. 17, 1957 [Oct. 22, 1956], No. 32450/57. Class 40 (7). Relates to aerial feed apparatus for use at centimetre wavelengths in which the feed is correctly matched over a wide range of frequency by the addition of suitable reactances. The apparatus comprises a length of waveguide 22, Fig. 1, mounted on the axis of a paraboloidal reflector 20 and terminated by a horn 24 positioned approximately at the focus of the reflector. Radio-frequency energy is radiated through the two curved branches of the horn, Fig. 3, on to the reflector. Two apertures 46, one only seen in Fig. 1, serve as the radiating elements and these give a capacitive loading to the horn. By the addition of inductive reactance this capacitive loading is neutralized and a good match effected. As shown, inductive irises 56, 58 are added, their position and size being so chosen that the desired characteristics are obtained. Unwanted effects due to energy returned from the reflector to the horn may be eliminated by use of a pair of circular plates 64, 66 mounted on the reflector such that the normals to the centres of the plates intersect at the horn and which are of such position and size that the energy reflected from them to the horn is equal in magnitude but opposite in phase to the energy reflected back from the parabola.
GB32450/57A 1956-10-22 1957-10-17 Improvements in feed systems for broad band antenna Expired GB818661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US617554A US2989748A (en) 1956-10-22 1956-10-22 Feed system for broad band antenna

Publications (1)

Publication Number Publication Date
GB818661A true GB818661A (en) 1959-08-19

Family

ID=24474114

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32450/57A Expired GB818661A (en) 1956-10-22 1957-10-17 Improvements in feed systems for broad band antenna

Country Status (4)

Country Link
US (1) US2989748A (en)
DE (1) DE1043425B (en)
FR (1) FR1184891A (en)
GB (1) GB818661A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058812A (en) * 1976-05-03 1977-11-15 Aradar Corporation Dish antenna with impedance matched splash plate feed
JPS5743367Y2 (en) * 1976-06-29 1982-09-24
US4178576A (en) * 1977-09-01 1979-12-11 Andrew Corporation Feed system for microwave antenna employing pattern control elements
US4631547A (en) * 1984-06-25 1986-12-23 The United States Of America As Represented By The Secretary Of The Air Force Reflector antenna having sidelobe suppression elements
US4725847A (en) * 1986-06-04 1988-02-16 The United States Of America As Represented By The Secretary Of The Air Force Reflector antenna having sidelobe nulling assembly with metallic gratings
GB2458663B (en) * 2008-03-26 2012-11-21 Thales Holdings Uk Plc Radome

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB601280A (en) * 1945-10-25 1948-05-03 Eric Wild Improvements in wireless aerial systems
US2607010A (en) * 1945-04-23 1952-08-12 Bell Telephone Labor Inc Wave guide antenna system
US2671855A (en) * 1945-09-19 1954-03-09 Lester C Van Atta Antenna
US2566900A (en) * 1948-12-31 1951-09-04 Gen Electric Ultra high frequency antenna system
GB708614A (en) * 1951-08-31 1954-05-05 Ericsson Telefon Ab L M Microwave antenna
US2729817A (en) * 1951-09-28 1956-01-03 Gen Electric Co Ltd Directive radio aerial systems
US2887683A (en) * 1952-12-22 1959-05-19 Motorola Inc Antenna system
US2824305A (en) * 1954-09-30 1958-02-18 Richard F Ohlemacher Microwave antenna feed

Also Published As

Publication number Publication date
FR1184891A (en) 1959-07-27
US2989748A (en) 1961-06-20
DE1043425B (en) 1958-11-13

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