Small antenna for portable radio phone

Details Small antenna for portable radio phone Small antenna for portable radio phone

1994-12-23

1996-12-17

Hajec, Donald T.

Communications: radio wave antennas

Antennas

With radio cabinet

343700MS, 343837, H01Q 124

Patent

active

055858074

ABSTRACT:
It is possible to realize an antenna realizing excellent matching with impedance of an RF part without including a resonant part that accumulates large reactive power in a small volume on a finite ground formed of a body of a portable radio phone by feeding a linear conductor presenting a step structure having a part parallel to the finite ground as an antenna and juxtaposing a linear conductor having a part parallel to another one or plurality of finite grounds in close vicinity to a linear conductor having a step structure on a finite ground in contact or non-contact therewith electrically. Accordingly, it is made possible to provide a small antenna or a built-in antenna applied to a small portable radio phone.

REFERENCES:
patent: 4809008 (1989-02-01), Gunton
patent: 4835540 (1989-05-01), Haruyama et al.
patent: 4907006 (1990-03-01), Nishikawa et al.
patent: 5148181 (1992-09-01), Yokoyama et al.

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