Antenna apparatus

Details Antenna apparatus Antenna apparatus

2005-11-29

2005-11-29

Wimer, Michael C. (Department: 2828)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S825000, C343S862000

Reexamination Certificate

active

06970136

ABSTRACT:
An antenna apparatus coupled to a feeding point arranged on a cavity is disclosed. The apparatus includes a linear element extending from the feeding point and having a physical length that is shorter than a one-quarter wavelength. A half-wave antenna element is connected to an end of the linear element. The apparatus also includes a metal conductor piece including a connecting point between the linear element and the half-wave antenna element and located close to one surface of the cavity. The linear element includes a first portion extending in a first direction opposite to that of the half-wave element from the feeding point and in parallel with one surface of the cavity and a second portion extending in a second direction, which is equal to a direction in which the half-wave antenna element extends, and in parallel with one surface of the cavity.

REFERENCES:
patent: 3474453 (1969-10-01), Ireland
patent: 5926140 (1999-07-01), Yokoyama
patent: 5969684 (1999-10-01), Oh et al.
patent: 5969688 (1999-10-01), Ireland
patent: 6087994 (2000-07-01), Lechter
patent: 6130651 (2000-10-01), Yanagisawa et al.
patent: 6211826 (2001-04-01), Aoki
patent: 6388626 (2002-05-01), Gamalielsson et al.
patent: 6661382 (2003-12-01), Sekine et al.
patent: 2000-101319 (2000-04-01), None

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