GB708614A - Microwave antenna - Google Patents

Microwave antenna

Info

Publication number
GB708614A
GB708614A GB21574/52A GB2157452A GB708614A GB 708614 A GB708614 A GB 708614A GB 21574/52 A GB21574/52 A GB 21574/52A GB 2157452 A GB2157452 A GB 2157452A GB 708614 A GB708614 A GB 708614A
Authority
GB
United Kingdom
Prior art keywords
horns
reflector
waveguide
reflected back
guide
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
GB21574/52A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB708614A publication Critical patent/GB708614A/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

708,614. Aerials. TELEFONAKTIEBOLAGET L. M. ERICSSON. Aug. 27, 1952 [Aug. 31, 1951; March 12, 1952], No. 21574/S2. Class 40 (7) A directive antenna system consists of a parabolic reflector 1 with a waveguide 7 extending through the vertix of the reflector in the direction of the axis and coupled to primary elements at the focus consisting of two horns 3 and 4 by means of slots 8, 9, each horn being intended to illuminute half the surface of the reflector. The walls of the horns nearest the guide 7 may be coincident with the waveguide wall but are preferably arranged as in Fig. 4 to obtain the most even illumination of the reflector. The length of the horns is made small to reduce the shadow caused by them. To avoid mis-match due to energy reflected back into the horns a phase plate may be mounted on the surface of the reflector round the wave guide of such size and thickness that energy reflected back to the horn through it cancels energy reflected back from the rest of the reflector. To reduce the size of the wave guide and horns; these may be filled with a solid dielectric medium. Only one of them may be so filled if this assists in matching the two. Matching of the horns to the waveguide is also effected by varying the widths of the coupling slots 8, 9 and in order to obtain a purely resistive load a reactive waveguide extention 10 and/or an iris 11 in the guide may be used.
GB21574/52A 1951-08-31 1952-08-27 Microwave antenna Expired GB708614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE708614X 1951-08-31

Publications (1)

Publication Number Publication Date
GB708614A true GB708614A (en) 1954-05-05

Family

ID=20315655

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21574/52A Expired GB708614A (en) 1951-08-31 1952-08-27 Microwave antenna

Country Status (1)

Country Link
GB (1) GB708614A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823380A (en) * 1953-07-29 1958-02-11 Gen Electric Co Ltd Directive radio aerial systems
US2907033A (en) * 1956-10-19 1959-09-29 Gabriel Co Wave-guide antenna
US2907034A (en) * 1957-03-28 1959-09-29 Gabriel Co Wave-guide antenna
US2908003A (en) * 1957-06-06 1959-10-06 Ernst L Bock Search antenna
US2989748A (en) * 1956-10-22 1961-06-20 Gen Bronze Corp Feed system for broad band antenna
US3162858A (en) * 1960-12-19 1964-12-22 Bell Telephone Labor Inc Ring focus antenna feed
US4578681A (en) * 1983-06-21 1986-03-25 Chaparral Communications, Inc. Method and apparatus for optimizing feedhorn performance
US4918353A (en) * 1987-09-29 1990-04-17 General Electric Company Reflector and lamp combination
FR2704695A1 (en) * 1993-04-30 1994-11-04 Thomson Csf Rear radiation source for reflector antenna.

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823380A (en) * 1953-07-29 1958-02-11 Gen Electric Co Ltd Directive radio aerial systems
US2907033A (en) * 1956-10-19 1959-09-29 Gabriel Co Wave-guide antenna
US2989748A (en) * 1956-10-22 1961-06-20 Gen Bronze Corp Feed system for broad band antenna
US2907034A (en) * 1957-03-28 1959-09-29 Gabriel Co Wave-guide antenna
US2908003A (en) * 1957-06-06 1959-10-06 Ernst L Bock Search antenna
US3162858A (en) * 1960-12-19 1964-12-22 Bell Telephone Labor Inc Ring focus antenna feed
US4578681A (en) * 1983-06-21 1986-03-25 Chaparral Communications, Inc. Method and apparatus for optimizing feedhorn performance
US4918353A (en) * 1987-09-29 1990-04-17 General Electric Company Reflector and lamp combination
FR2704695A1 (en) * 1993-04-30 1994-11-04 Thomson Csf Rear radiation source for reflector antenna.
US5821906A (en) * 1993-04-30 1998-10-13 Thomson-Csf Rear feed source for reflector antenna

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