High efficiency, multi-band antenna for a radio communication de

Details High efficiency, multi-band antenna for a radio communication de High efficiency, multi-band antenna for a radio communication de

1998-05-29

1999-11-02

Wong, Don

Communications: radio wave antennas

Antennas

Active sleeve surrounds feed line

343702, 343905, 455575, 455 90, H01Q 904

Patent

active

059779284

ABSTRACT:
The present invention provides a radio communication device having a multi-band swivel antenna assembly. The antenna assembly includes a multi-band radiating antenna element and a multi-band sleeve which allows the antenna to be tuned to multiple resonances. The multi-band antenna element and sleeve are attached to the chassis of the communication device via a coaxial feeding cable which serves to isolate those elements from the chassis.

REFERENCES:
patent: 4509056 (1985-04-01), Ploussios
patent: 4571595 (1986-02-01), Phillips et al.
patent: 4746925 (1988-05-01), Torlyama
patent: 5336896 (1994-08-01), Katz
patent: 5440317 (1995-08-01), Jalloul et al.
patent: 5535435 (1996-07-01), Balzano et al.
patent: 5541609 (1996-07-01), Stutzman et al.
patent: 5572224 (1996-11-01), Moller et al.
patent: 5691730 (1997-11-01), Egashira et al.
patent: 5719587 (1998-02-01), Rodal
patent: 5828342 (1998-10-01), Hayes et al.

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