Evaluating the Electromagnetic Surface Wave of High Impedance Structures by Monopole Antenna and Application for Patch Antennas at Q Band

摘要

This paper presents first a simulation method to evaluate the electric field on the surface of a High Impedance Surface (HIS) structure using a monopole antenna working at Q band. The simulation bases on FDTD (Finite Difference Time Domain) code. Operating frequency of monopole antenna lies within the forbidden bandgap of HIS structure. The electric field on the surface of the structure within and outside the bandgap is observed and studied. These HIS structures then are applied to improve the performances of patch antenna which works in the same frequency band. The method can be used to evaluate the performance of HIS structure on antenna system.