GB599600A - Improvements in or relating to wireless aerial systems - Google Patents

Improvements in or relating to wireless aerial systems

Info

Publication number
GB599600A
GB599600A GB2659145A GB2659145A GB599600A GB 599600 A GB599600 A GB 599600A GB 2659145 A GB2659145 A GB 2659145A GB 2659145 A GB2659145 A GB 2659145A GB 599600 A GB599600 A GB 599600A
Authority
GB
United Kingdom
Prior art keywords
aerial
radar
divided
plate
over
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
GB2659145A
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.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US765100A priority Critical patent/US2513498A/en
Publication of GB599600A publication Critical patent/GB599600A/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

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

599,600. Aerials. LAWSON, J. D. Oct. 11, 1945, No. 26591. [Class 40 (v)] An ultra-high-frequency wireless aerial system for producing an asymmetric polar diagram (e.g. as described in Specification 599,572) comprises a mirror 10 which is divided by a conductive plate 11, each portion of the mirror being coupled to a common receiver or transmitter, over separate paths in which are situated means for imposing a phase displacement on the energy passing to, or from, one portion with respect to the energy passing to or from the other portion. The aerial is coupled to the receiver or transmitter by the waveguide 12 having a flared aperture and divided over a portion of its length by plate 14 lying in the same plane as the plate 11. A piece 15 of dielectric material, preferably a plastic of the polystyrene group, is inserted into one of the divided portions of the guide, whereby the selective phase displacement is introduced. The invention is applicable to an airborne radar system which provides a survey of the terrain over which the aircraft is flying and which is adapted also to search in a horizontal plane for. other aircraft and radar beacons. In such a radar system, the aerial is so adapted that the dielectric body may be wholly or partly removed when the radar is performing the latter function so that the requisite narrow beam may be obtained.
GB2659145A 1945-10-11 1945-10-11 Improvements in or relating to wireless aerial systems Expired GB599600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US765100A US2513498A (en) 1945-10-11 1947-07-31 Wireless aerial system

Publications (1)

Publication Number Publication Date
GB599600A true GB599600A (en) 1948-03-16

Family

ID=1740136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2659145A Expired GB599600A (en) 1945-10-11 1945-10-11 Improvements in or relating to wireless aerial systems

Country Status (1)

Country Link
GB (1) GB599600A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692336A (en) * 1949-11-26 1954-10-19 Bell Telephone Labor Inc Aperture antenna
US2720588A (en) * 1949-07-22 1955-10-11 Nat Res Dev Radio antennae
US2913723A (en) * 1956-01-23 1959-11-17 Csf Variable pattern radar aerial

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720588A (en) * 1949-07-22 1955-10-11 Nat Res Dev Radio antennae
US2692336A (en) * 1949-11-26 1954-10-19 Bell Telephone Labor Inc Aperture antenna
US2913723A (en) * 1956-01-23 1959-11-17 Csf Variable pattern radar aerial

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