Low profile array antenna system with independent multibeam control
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United States of America Patent
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-
Oct 9, 1990
Grant Date -
N/A
app pub date -
Nov 8, 1984
filing date -
Nov 8, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An array antenna system has been described incorporating a plurality of antenna elements each having two quarter wave patches or monopoles for radiating microwave energy in a forward and reverse direction, a first and second beam forming network coupled to a coupler for each antenna element, wherein microwave energy coupled to the antenna element from one beam forming network couples lagging phase to one of the two quarter wave patches and from the second beam forming network couples lagging phase to the other quarter wave patch. The invention overcomes the problem of antenna utilization by providing two autonomous beam patterns with independent control or for overcoming the problem of antenna pattern performance by providing a second pattern which may be combined with the first pattern to provide, for example, an improved front-to-back ratio.
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Cited Art Landscape
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