Circularly polarized antenna device

Details Circularly polarized antenna device Circularly polarized antenna device

2007-04-24

2008-09-02

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S833000, C343S846000

Reexamination Certificate

active

07420513

ABSTRACT:
First and second monopole conductive elements are disposed so as to be approximately mutually perpendicular and so that respective open ends are adjacent, and with respect to a straight line that passes between open ends of the first and second monopole conductive elements and through a center of a conductive ground plane, a first conductive ground plane portion formed on a first monopole conductive element-side of the straight line among the conductive ground plane and the first monopole conductive element are formed so as to be approximately symmetrical to a second conductive ground plane portion formed on a second monopole conductive element-side of the straight line among the conductive ground plane and the second monopole conductive element.

REFERENCES:
patent: 6369762 (2002-04-01), Yanagisawa et al.
patent: 6816127 (2004-11-01), McKivergan et al.
patent: 7026996 (2006-04-01), Harano
patent: 7330153 (2008-02-01), Rentz
patent: 7333068 (2008-02-01), Biddulph
patent: 2001/0023178 (2001-09-01), Amano et al.
patent: 2005/0143151 (2005-06-01), Ito et al.
patent: 2007/0057849 (2007-03-01), Moon et al.
patent: 2005-101761 (2005-04-01), None
patent: 2005-236656 (2005-09-01), None

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