Broadband circular phased array antenna
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United States of America Patent
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-
Nov 27, 1990
Grant Date -
N/A
app pub date -
Dec 18, 1989
filing date -
Dec 18, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for generating a directional beam for radiating or receiving electromagnetic signals having a constant beamwidth over a predetermined frequency range has been described incorporating a circular array antenna, a Butler matrix, a plurality of phase shifters, a plurality of transmission line lengths, and a power divider. The invention overcomes the problem of constant beamwidth over a predetermined frequency range such as one and one half octaves.
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