Tuning Microstrip Patch Antennas on Ferrite Substrate Using Simple Ground Plane Structures

摘要

An additional tuning strategy for microstrip patch antennas on magnetized ferrite substrates is presented. It is shown that by introducing simple ground plane structures, the response of the patch antenna can be improved considerably. The analysis method is based on a 3D FDTD algorithm. The FDTD model utilizes the auxiliary differential equation approach to represent the frequency dependent permeability tensor in the time domain equations. The resulting 3D full-wave numerical model is tested and verified against experimental data showing very good agreement.