Design of AMC Backed Printed Monopole Antenna for GPS and Satellite Applications

This paper presents a wideband printed monopole antenna for GPS and satellite applications. To enhance gain, the antenna is placed on top of an artificial magnetic conductor (AMC) ground. The monopole antenna ranges from 0.9 to 4.79 GHz, whereas the proposed AMC is dual-band with bandwidth of ±90° from 0.9 to 2.45 GHz and 3.1 to 3.9 GHz. At 2.93 GHz, the AMC exhibits a phase change of ±180°. Peak gains are increased by 6.4 dB at 1.5 GHz, 4.12 dB at 2.4 GHz, and 3.5 dB at 3.5 GHz. The antenna is fabricated and experimentally verified.