Reduced size GPS microstrip antenna

Details Reduced size GPS microstrip antenna Reduced size GPS microstrip antenna

2005-01-11

2005-01-11

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S726000, C343S846000

Reexamination Certificate

active

06842145

ABSTRACT:
A reduced size microstrip antenna which receives GPS data and which is adapted for use on small diameter weapons systems such as a missile or smart bomb. The microstrip antenna 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 pair of quarter-wavelength antennas which have a rectangular shape and are rotated ninety degrees from one another, and a copper etched feed network which provides for a signal phase shift of ninety degrees.

REFERENCES:
patent: 4291311 (1981-09-01), Kaloi
patent: 4356492 (1982-10-01), Kaloi
patent: 5241322 (1993-08-01), Gegan
patent: 5400040 (1995-03-01), Lane et al.
patent: 5400041 (1995-03-01), Strickland
patent: 5945938 (1999-08-01), Chia et al.
patent: 6031503 (2000-02-01), Preiss et al.
patent: 6343208 (2002-01-01), Ying

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