Step-by-Step Modification of Printed Wideband Balun for GPR Antennas

Abstract

Several designs of ultra-wideband (UWB) micro-strip to slotline transitions for tapered-slot antennas (TSA) have been considered. A fourth-order Marchand microstrip-slotline balun and two transitions using wideband slot stubs and micro-strip stubs have been simulated using CST Microwave Studio. TSA employing these baluns had been designed, fabricated and tested. The results of simulations and experimental data are presented.