Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1997-09-24
1999-11-30
Le, Hoanganh
Communications: radio wave antennas
Antennas
Spiral or helical type
343791, 343752, H01Q 136, H01Q 904
Patent
active
059950650
ABSTRACT:
This invention relates to an antenna operable in a multi-mode radio transceiver. One aspect of the present invention, provides a radio antenna having resonant frequencies operable to receive and transmit radio signals in different frequency bands according to two operating protocols.
REFERENCES:
patent: 4509056 (1985-04-01), Ploussios
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patent: 4829316 (1989-05-01), Nakasa et al.
patent: 4940989 (1990-07-01), Austin
patent: 5311201 (1994-05-01), Lillie et al.
patent: 5416490 (1995-05-01), Popovic
Colloquium on Design of Mobile Handset Antennas for Optimal Performance in the Presence of Biological Tissue--Reference No. 1997/022.
A Wideband Dual Meander Sleeve Antenna--M Ali et al.
Kitchener Dean
Robson Julius George
Crane John D.
Le Hoang-anh
Malos Jennifer H.
Nortel Networks Corporation
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