A novel marching-on-in-time algorithm for analyzing arbitrary-structure thin-wire antennas

This paper presents a novel marching-on-in-time algorithm for analyzing thin-wire antennas with arbitrary structures. Transient charges and currents along the thin wire are iterated explicitly in a leap-frog fashion, similarly as in the finite difference time domain method. The input impedances of different types of thin-wire antennas in frequency domain are calculated through discrete Fourier Transform (DFT) and compared with those from Method of Moments (MoM), which shows that the proposed algorithm is effective and efficient, even in the case of complex wire structures.