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This paper presents a novel design of stacked dual layer strip lines fed patch antenna. The wideband characteristics can be achieved by employing approximate L-probes coupling feeding schemes. Dual layer strip lines which are composed of one broadband 180 - hybrid and two wideband 90 - hybrids are introduced as feeding network in this design. As a result, the designed antenna has a 59.4% 10-dB input re∞ection coe-cient bandwidth and 48.3% 3-dB axial ratio (AR) bandwidth relative to the center frequency respectively. The designed antenna occupies a compact size of 80mm£80mm£32mm. The flnal antenna provides a very good circularly polarized radiation for Global Navigation Satellite System applications including GPS, GLONASS, Galileo and Compass.

NOVEL DESIGN OF STACKED DUAL LAYER STRIP LINES FED WIDEBAND PATCH ANTENNA FOR GNSS APPLICATION