Transmit/receive antenna

A transmit/receive antenna for a radar system has a microwave focusing lens 32 in the focal plane of which is an array 34 of receive elements, e.g. crossed dipoles. A small transmitter horn 30 is located in a central aperture 31 in the lens, so that the transmitter aperture is substantially smaller...

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Bibliographic Details
Main Author WILLIAM DAVID WADDOUP
Format Patent
LanguageEnglish
Published 20.02.1991
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
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Summary:A transmit/receive antenna for a radar system has a microwave focusing lens 32 in the focal plane of which is an array 34 of receive elements, e.g. crossed dipoles. A small transmitter horn 30 is located in a central aperture 31 in the lens, so that the transmitter aperture is substantially smaller than the receive aperture. The transmitted energy floodlight illuminates the targets scanned by the receive elements of the array. A local oscillator source 33 to the rear of the antenna illuminates the elements of the array. In an alternative embodiment the transmitter horn is in an aperture offset from the centre of the lens.
Bibliography:Application Number: GB19860025560