Shielding for radiotelephones with retractable antennas

Details Shielding for radiotelephones with retractable antennas Shielding for radiotelephones with retractable antennas

1997-12-19

2000-10-24

Hunter, Daniel S.

Telecommunications

Transmitter

With coupled antenna

343702, H04B 103

Patent

active

061379980

ABSTRACT:
Shields for radiotelephones with a retractable antenna include a conductive tubular antenna guide operably associated with an electronic ground, and preferably configured to form an inductor or capacitor in a matching circuit operable when the antenna is in the retracted position. Associated methods include directing RF radiation produced by the antenna positioned internal to the radiotelephone along a longitudinal exit path out of the radiotelephone.

REFERENCES:
patent: 4785247 (1988-11-01), Meador
patent: 5089829 (1992-02-01), Haruyama et al.
patent: 5335366 (1994-08-01), Daniels
patent: 5343213 (1994-08-01), Kottke
patent: 5389938 (1995-02-01), Harrison
patent: 5412393 (1995-05-01), Wieggenhorn
patent: 5434582 (1995-07-01), Koike
patent: 5604507 (1997-02-01), Openlander
patent: 5617105 (1997-04-01), Tsunekawa
patent: 5635943 (1997-06-01), Grunwell
patent: 5659889 (1997-08-01), Cockson
patent: 5694137 (1997-12-01), Wood
patent: 5856808 (1999-01-01), Holshouser
Patent Abstract of Japan, vol. 097, No. 08, (Aug. 29, 1997).
PCT International Search Report, International Application No. PCT/US98/26995.

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