Swivel antenna with parasitic tuning

Details Swivel antenna with parasitic tuning Swivel antenna with parasitic tuning

1998-08-03

1999-08-24

Wong, Don

Communications: radio wave antennas

Antennas

With radio cabinet

H01Q 124

Patent

active

059430214

ABSTRACT:
A radiotelephone antenna system includes a parasitic tuning element disposed on a radiotelephone housing so as to be located adjacent a swivel antenna when the antenna is in a stored position. When in a stored position, the antenna overlies at least a portion of the parasitic tuning element. The parasitic tuning element is coupled to the swivel antenna to tune the swivel antenna to a first frequency band and to match an impedance of the antenna with an impedance of the radiotelephone transceiver. Accordingly, a radiotelephone can operate satisfactorily even when a swivel antenna is in a stored position.

REFERENCES:
patent: 5554996 (1996-09-01), Chatzipetros
patent: 5572223 (1996-11-01), Phillips et al.

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