Antenna apparatus

Details Antenna apparatus Antenna apparatus

2006-10-13

2008-08-19

Owens, Douglas W. (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S702000, C343S901000

Reexamination Certificate

active

07414592

ABSTRACT:
An antenna apparatus includes a hollow column, a conductive cable, a first metal wire, a column structure, and a second metal wire. The conductive cable is received in the hollow column, and the conductive cable electrically contacts the hollow column via a second conductive wire layer thereof. One side of the first metal wire is electrically connected with a first conductive wire layer of the conductive cable. The column structure has a column body, a metal layer formed on the column body, at least one spiral groove formed on the metal layer for exposing a part of the column body, and two conductive covers respectively disposed on two sides of the column body. Moreover, one of the two conductive covers is electrically connected with the other side of the first metal wire. Furthermore, one side of the second metal wire is electrically connected with the other conductive cover.

REFERENCES:
patent: 4882591 (1989-11-01), Galvin et al.
patent: 5587695 (1996-12-01), Warmerdam
patent: 5914697 (1999-06-01), Seki
patent: 6239768 (2001-05-01), Oh et al.
patent: 6421029 (2002-07-01), Tanabe

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