GB604257A - Improvements in or relating to wireless aerial systems - Google Patents

Improvements in or relating to wireless aerial systems

Info

Publication number
GB604257A
GB604257A GB3364145A GB3364145A GB604257A GB 604257 A GB604257 A GB 604257A GB 3364145 A GB3364145 A GB 3364145A GB 3364145 A GB3364145 A GB 3364145A GB 604257 A GB604257 A GB 604257A
Authority
GB
United Kingdom
Prior art keywords
sheets
relating
reflector
wireless aerial
aerial systems
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
GB3364145A
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.)
ERIC JOHN GILLHAM
Original Assignee
ERIC JOHN GILLHAM
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 ERIC JOHN GILLHAM filed Critical ERIC JOHN GILLHAM
Priority to GB3364145A priority Critical patent/GB604257A/en
Publication of GB604257A publication Critical patent/GB604257A/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

Abstract

604,257. Aerials. GILLHAM, E. J. Dec. 12, 1945, No. 33641. [Class 40 (vii)] An aerial for use in an airborne radar system of the kind described in Specification 599,572, wherein a uniform illumination of the earth's surface is produced within certain limits, comprises a mirror reflector 10 fed from, or feeding into, a wave-guide horn 11, there being positioned within the reflector a member 13 of dielectric material so as to provide the desired asymmetry of the radiation/reception characteristic in a plane perpendicular to the dielectric member. As shown, the member 13 comprises two sheets of either of the materials known under the Registered Trade Marks " Perspex " and " Distrene," one of the sheets having a straight front edge parallel to the aperture and the other having a different shape so that the member varies in thickness.
GB3364145A 1945-12-12 1945-12-12 Improvements in or relating to wireless aerial systems Expired GB604257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3364145A GB604257A (en) 1945-12-12 1945-12-12 Improvements in or relating to wireless aerial systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3364145A GB604257A (en) 1945-12-12 1945-12-12 Improvements in or relating to wireless aerial systems

Publications (1)

Publication Number Publication Date
GB604257A true GB604257A (en) 1948-06-30

Family

ID=10355545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3364145A Expired GB604257A (en) 1945-12-12 1945-12-12 Improvements in or relating to wireless aerial systems

Country Status (1)

Country Link
GB (1) GB604257A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709252A (en) * 1948-08-20 1955-05-24 Gilfillan Bros Inc Multi-plane tracking in ground controlled approach system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2709252A (en) * 1948-08-20 1955-05-24 Gilfillan Bros Inc Multi-plane tracking in ground controlled approach system

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