Communications: radio wave antennas – Antennas – Spiral or helical type
Reexamination Certificate
2007-09-07
2010-11-02
Wimer, Michael C (Department: 2821)
Communications: radio wave antennas
Antennas
Spiral or helical type
C343S725000
Reexamination Certificate
active
07825873
ABSTRACT:
The present invention relates to an antenna comprising:at least one central longitudinal radiating element; andat least one outer element comprising at least one rolled-up electrically-conductive sheet disposed around the central element, without electrical contact therebetween, the outer element presenting a height that is strictly decreasing, or alternatively that increases and decreases along the roll.
REFERENCES:
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patent: 5231412 (1993-07-01), Eberhardt et al.
patent: 5835065 (1998-11-01), Wallace et al.
patent: 9409131 (2002-01-01), Warnagiris
patent: 6549175 (2003-04-01), Cencich et al.
patent: 6864853 (2005-03-01), Judd et al.
patent: RE40129 (2008-03-01), Warnagiris
patent: 2002/0113743 (2002-08-01), Judd et al.
patent: 2003/0038750 (2003-02-01), Chen
patent: 2006/0071873 (2006-04-01), Warnagiris
Fond Emilie
Perrot Serge
Rigoland Patrice
Oliff & Berridg,e PLC
Radiall
Robinson Kyana R
Wimer Michael C
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