High gain antenna systems for cellular use
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United States of America Patent
Stats
-
May 25, 1999
Issued Date -
N/A
app pub date -
Jun 24, 1997
filing date -
Jan 27, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a cellular type communication system a sector antenna 12 provides coverage of a sector with a relatively low receive gain. A multi-beam antenna 20 covers the same sector with a plurality of narrower beams 21', 22', 23' and 24' providing higher gain. A multi-beam antenna system 10 provides higher gain operation by selecting the one of the narrower beams 21', 22', 23' or 24' currently providing best reception of a signal transmitted by a user and coupling that selected beam to a system receiver 18. Beam selection is accomplished by sequentially coupling each narrow beam to a microprocessor based control unit 40 and storing samples of user signals as received in each narrow beam on a continuing repetitive basis. The stored samples are then analyzed in order to select the beam currently providing best reception.
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Family
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Cited Art Landscape
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