Reduced size GPS conical shaped microstrip antenna array

Details Reduced size GPS conical shaped microstrip antenna array Reduced size GPS conical shaped microstrip antenna array

2005-03-15

2005-03-15

Wong, Don (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

Reexamination Certificate

active

06867737

ABSTRACT:
A GPS conical shaped microstrip antenna array which receives GPS data and which is adapted for use on weapons systems such as a missile or smart bomb. The microstrip antenna array has a center frequency of 1.575 GHz, a frequency bandwidth of twenty megahertz and provides for right hand circular polarization. The microstrip antenna includes a four aligned copper antenna elements which have a square shape, and a copper etched feed network which provides for a signal phase shift of ninety degrees resulting in right hand circular polarization of each of the four aligned antenna elements.

REFERENCES:
patent: 5019829 (1991-05-01), Heckman et al.
patent: 6011518 (2000-01-01), Yamagishi et al.
patent: 6466172 (2002-10-01), Ryken et al.
patent: 6549168 (2003-04-01), Ryken et al.

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