Simulation of a Broadband Antenna with the Method of Moments

Abstract

In the paper selected problems of computer simulations of abroadband antenna containing large metallic surfaces with the Method ofMoments have been discussed. A novel broadband combined spiral-disconeantenna, built of a complementary spiral and a cone has been analyzed.Since the antenna contains large metallic surfaces wire-grid models hadto be developed in order to simulate the antenna with the thin-wirekernel method of moments. Several wire-grid models of the antenna havebeen proposed and analyzed. The simulation results for input impedancehave been compared to those obtained from measurements and the bestmodel of the antenna has been identified.