Communications: radio wave antennas – Antennas – Fractional – multiple – or full wave length linear type
Patent
1997-03-31
1998-05-26
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Fractional, multiple, or full wave length linear type
343829, 343846, H01Q 138, H01Q 2129
Patent
active
057573336
ABSTRACT:
A communications antenna structure, e.g. for a cellular radio base station comprises first and second bent folded monopole planar antenna elements mounted on a ground plane and disposed generally perpendicular to thereto. The antenna elements are mutually spaced from each other and are disposed with their respective planes at an angle to each other whereby to provide both polarisation diversity and space diversity of the antenna structure.
REFERENCES:
patent: 2994876 (1961-08-01), Josephson
patent: 3249946 (1966-05-01), Flanagan
patent: 4763131 (1988-08-01), Rosser et al.
patent: 5420599 (1995-05-01), Erkocevic
Northern Telecom Limited
Wimer Michael C.
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