System for isolating an auxiliary antenna from a main antenna mounted in a common antenna assembly
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United States of America Patent
Stats
-
Jul 22, 2008
Grant Date -
Jun 23, 2005
app pub date -
Feb 11, 2005
filing date -
Apr 12, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A radio frequency antenna structure includes a base station antenna and an auxiliary antenna mounted within a common antenna assembly. The base station antenna is configured to transmit or receive signals in a first frequency range and to develop a main beam that is substantially wider in azimuth than in elevation, and the auxiliary antenna is configured to transmit or receive signals in a second frequency range at least partially overlapping the first frequency range and to develop an auxiliary beam at least partially overlapping the main beam. Means are included for decoupling the base station and auxiliary antennas to thereby suppress interference between the main and auxiliary beams, and for suppressing interference between the auxiliary antenna and any co-located antennas.
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