Concentric Annular-Ring Microstrip Antenna With Circular Polarization

Dept. of Telecommun. & Syst. Eng., Univ. Autonoma de Barcelona (UAB), Cerdanyola del Valles, Spain
IEEE Antennas and Wireless Propagation Letters (Impact Factor: 1.95). 02/2011; 10:517 - 519. DOI: 10.1109/LAWP.2011.2157298
Source: IEEE Xplore

ABSTRACT In this letter, we present a concentric annular-ring microstrip antenna that covers the bands of Galileo (E5a, E5b, E1, E2, L1), GPS (L1, L2, L5), and GLONASS (L1, L3). This microstrip antenna is fed by four apertures that improve the coupling. Broad band phase shifters and Wilkinson power combiners are used to generate the required circular polarization.

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