Communications: radio wave antennas – Antennas – Combined
Reexamination Certificate
2006-05-15
2009-12-29
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Combined
C343S895000
Reexamination Certificate
active
07639204
ABSTRACT:
A low-visibility, fixed-tune, wideband, and field-diverse antenna provides cross-polarized fields enhancing signal communications but having helical antenna characteristics without severe circular polarization radiation thereby promoting a modern, futuristic, and disguised look for reliable communications. A generally flat, but helical, antenna is achieved in conjunction with a core substrate about which the antenna is wrapped, wound, or fixed. The core substrate, pitch or angle of the helix, length of the transmitting antenna, and copper traces thickness are chosen for a specific resonant frequency range. The length and width of the helix are chosen in order to dimension the helical antenna between its linear and circular polarization modes to thereby deliver field-diverse and cross-polarized transmission modes. In order to optimize the manufacturing process, holes may be created within the substrate. These holes are plated with conducting material so that conducting foil on opposite faces of the substrate may be electrically connected. The holes may be offset according to the pitch of the helix. Once the transmitting antenna has been fabricated upon the core substrate, the margin between the plated-through holes and the edge of the substrate may be separated by cutting, sawing, or stamping.
REFERENCES:
patent: D157090 (1950-01-01), Schmidt
patent: D356314 (1995-03-01), Rich et al.
patent: D357683 (1995-04-01), Cline et al.
patent: D418840 (2000-01-01), Cota et al.
patent: 6023245 (2000-02-01), Gomez et al.
patent: D429720 (2000-08-01), Strand
patent: D443263 (2001-06-01), Strand et al.
patent: D461796 (2002-08-01), Boyer
patent: D465480 (2002-11-01), Boyer
patent: D470131 (2003-02-01), Noro et al.
patent: D470481 (2003-02-01), Ikeda
patent: D472892 (2003-04-01), Tourres
patent: D480712 (2003-10-01), Noro
patent: D481028 (2003-10-01), Wu
patent: D482350 (2003-11-01), Noro et al.
patent: D489712 (2004-05-01), Nagatomi
patent: D491926 (2004-06-01), Tai et al.
patent: D493447 (2004-07-01), Noro et al.
patent: 6762727 (2004-07-01), Rochford et al.
patent: 6806767 (2004-10-01), Dow
patent: 7209096 (2007-04-01), Chau
patent: 2004/0183734 (2004-09-01), Noro
Antenex, Inc.
Chen Shih-Chao
Harness & Dickey & Pierce P.L.C.
LandOfFree
Low visibility, fixed-tune, wide band and field-diverse... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low visibility, fixed-tune, wide band and field-diverse..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low visibility, fixed-tune, wide band and field-diverse... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4096658