文档介绍：RADIOENGINEERING, VOL. 14, NO. 4, DECEMBER 2005 43
Simulation of a Broadband Antenna
with the Method of Moments
Łukasz JANUSZKIEWICZ, Mariusz CZARNECKI
Institute of Electronics, Technical University of Łódź, Wólczańska 223, 90-924 Łódź, Poland
lukasz_******@, ******@
Abstract. In the paper selected problems puter simulation of a broadband antenna has different assump-
simulations of a broadband antenna containing large me- tions. It requires the possibility of calculating input im-
tallic surfaces with the Method of Moments have been pedance (or VSWR) and radiation pattern. For broadband
discussed. A novel bined spiral-discone antenna the stable value of S11 or VSWR is required across
antenna, built of plementary spiral and a cone has the operating frequencies and it is used for bandwidth
been analyzed. Since the antenna contains large metallic qualification.
surfaces wire-grid models had to be developed in order to
simulate the antenna with the thin-wire kernel method of
moments. Several wire-grid models of the antenna have
been proposed and analyzed. The simulation results for
input impedance have pared to those obtained
from measurements and the best model of the antenna has
been identified.
Fig. 1. Combined spiral-discone antenna.
Keywords The input impedance is very important parameter that can
Broadband a