Dual-polarization broadband patch antenna

A dual-polarization wideband microstrip patch antenna is designed that has a VSWR less than or equal to 2 in the bandwidth about 2.5 times wider than that of a standard square patch of the same dimension. Several characterist ics of the antenna are analyzed using both Ensemble and nn in-house finite- difference time-domain (FDTD) code. The dependence of the input impedance o n the different parameters of the antenna is also given. The antenna can re ceive circularly polarized waves with less than 1.5 dB polarization loss fa ctor. (C) 1999 John Wiley & Sons, Inc.