Antenna for portable radio communication apparatus

Details Antenna for portable radio communication apparatus Antenna for portable radio communication apparatus

1994-01-26

1995-10-03

Hajec, Donald

Communications: radio wave antennas

Antennas

With radio cabinet

343900, 343901, H01Q 124

Patent

active

054555957

ABSTRACT:
An antenna mounted on and retractable into a casing of a portable radio communication apparatus. When the antenna is pulled out of the casing, it plays the role of a .lambda./2 whip antenna. Even when the antenna is retracted into the casing, it has substantially the same gain as when pulled out from the casing.

REFERENCES:
patent: 110930 (1940-06-01), Collins
patent: 4860024 (1989-08-01), Egashira
patent: 4868576 (1989-09-01), Johnson
patent: 5177492 (1993-01-01), Tomura et al.

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