Modified Mode Decomposition for Analyzing Antennas with Body of Revolution Radome

Abstract

Two improvements are made on mode decomposition for analyzing the antennas with body of revolution (BOR) radome by the method of moments (MoM). First, the integral calculations in mode decomposition of the incident fields are replaced by Fast Fourier Transform (FFT). Then a method is introduced to automatically select the calculated modes. Simulation results are also presented, which indicate the effectiveness and efficiency of the proposed approach.