System for isolating an auxiliary antenna from a main...

Details System for isolating an auxiliary antenna from a main... System for isolating an auxiliary antenna from a main...

2008-07-22

2008-07-22

Wimer, Michael C (Department: 2821)

Communications: radio wave antennas

Antennas

With electrical shield

C343S890000

Reexamination Certificate

active

07403171

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.

REFERENCES:
patent: 4329690 (1982-05-01), Parker
patent: 5038151 (1991-08-01), Kaminski
patent: 6282427 (2001-08-01), Larsson et al.
patent: 6295455 (2001-09-01), Fischer et al.
patent: 2001/0009857 (2001-07-01), Vanttinen
patent: 2001/0039192 (2001-11-01), Osterling et al.
patent: 2001/0041575 (2001-11-01), Amirijoo et al.
patent: 2002/0027993 (2002-03-01), Vanttinen

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