Double-action antenna

Details Double-action antenna Double-action antenna

1996-05-29

1998-03-31

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

With radio cabinet

343892, 343900, H01Q 124

Patent

active

057343519

ABSTRACT:
The invention relates to a double-action, two-piece antenna structure whose first antenna part, preferably a helix antenna (1), is fixedly connected to the antenna port of a radio communications set, and the second antenna port, preferably a rod antenna (2), is movable with respect to the first antenna part. In an active position, the second antenna part (2) is coupled to the first antenna part (1), forming a serial connection whose electrical length is as great as or greater than the electrical length of the first antenna part alone.

REFERENCES:
patent: 4868576 (1989-09-01), Johnson, Jr.
patent: 5446469 (1995-08-01), Makino

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