Design of Parallel-Plate Transmission Line Feeding Differentially Driven Patch Antenna for GPS application
DOI:
https://doi.org/10.24297/ijct.v12i4.3189Keywords:
3-dB-gain bandwidth, Differentially driven antenna, bandwidth, parallel-plate transmission line, CADFEKO.Abstract
In this paper a newly developed patch antenna, designated as the parallel-plate transmission line feeding differentially driven patch antenna is presented. The parallel-plate transmission line will not introduce inductance to the input impedance of a patch antenna, thus the height of the patch can be largely increased. Measurements show that the 3-dB-gain bandwidth can be obtained to 65% (0.86–1.93 GHz), return loss is -20dB, VSWR is 1.3 and impedance is 51 ohm at resonant frequency of 1.58GHz. The radiation pattern is stable and this antenna is designed for GPS application.