Communications: radio wave antennas – Antennas – Spiral or helical type
Reexamination Certificate
2005-07-26
2005-07-26
Wong, Don (Department: 2821)
Communications: radio wave antennas
Antennas
Spiral or helical type
Reexamination Certificate
active
06922178
ABSTRACT:
A multiple bandwidth antenna assembly including a helical radiator having at least a first helical pitch and a second helical pitch, a core plug having a first axial piece and a second axial piece, and a first recessed pattern configured on the first axial piece to engage at least the first helical pitch and a second recessed pattern configured on the second axial piece to engage at least the second helical pitch.
REFERENCES:
patent: 3617890 (1971-11-01), Kurauchi et al.
patent: 6369775 (2002-04-01), Moore et al.
patent: 2002/0014996 (2002-02-01), Keiten
patent: 2004/0119657 (2004-06-01), Mayer et al.
Dou Weiping
Sutter Robert William
Weaver William B.
Amphenol-T&M Antennas
Cao Huedung X.
Greer Burns & Crain Ltd
Wong Don
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