In this paper, an one to one maping is used to transfer an arbitrary domain and a nonuniform grid on it in physical plane to a rectangular domain with a uniform grid in computational plane.

Pronys method has been combined with time domain integral equation (TDIE) to solve transient response from arbitrary thin wire structure.

This paper deal with the a computational electromagnetics method, which enables the interactions between arbitrary shape antennas and inhomogeneous dielectric volumes in time domain to be analyzed.