Douglas E Fund from 14425 80Th St, Shawnee Mission, KS 66215, Phone: 9138590127

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Time-Delayed Directional Beam Phased Array Antenna
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US Patent:

20040135736, Jul 15, 2004
Filed:

Jan 14, 2003
Appl. No.:

10/342581
Inventors:

Douglas Fund - Lenexa KS, US
John Cable - Kansas City MO, US
Tony Cecil - Kansas City MO, US
International Classification:

H01Q001/36
US Classification:

343/895000, 343/757000, 343/853000
Abstract:

An antenna comprising a phased array of quadrifilar helix or other multifilar antenna elements and a time-delaying feed network adapted to feed the elements. The feed network can employ a plurality of coaxial cables that physically bridge a microstrip feed circuitry to feed power signals to the elements. The cables provide an incremental time delay which is related to their physical lengths, such that replacing cables having a first set of lengths with cables having a second set of lengths functions to change the time delay and shift or steer the antenna's main beam. Alternatively, the coaxial cables may be replaced with a programmable signal processor unit adapted to introduce the time delay using signal processing techniques applied to the power signals.