Dual radio antenna

Details Dual radio antenna Dual radio antenna

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
patent: 4647941 (1987-03-01), Myer
patent: 4658260 (1987-04-01), Myer
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.

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