Báo Cáo Development of probe feeding simulation technique by applying of probe current compensation method i

Development of probe feeding simulation technique by applying of probe current compensation method in fdtdThis paper presents a method to develop probe feeding technique by applying of probe current compensation method (PCCM) for microstrip antenna simulation. The compensation of probe current computation (PCC) is necessary because of differentiation error in PCC. Probe current analysis is compensated by multiplying with a coefficient which is computed from the surfaces of integral closed paths in Ampere’s circuital law. This paper presents two applications of PCCM in probe feeding simulations. The First one is applied when the probe is defined in rectangular coordinate. The second one is in cylindrical coordinate, in this case, overlapping-grid technique is applied. By using the PCCM in cylindrical probe structure simulation, the differentiation error is reduced. The contour path error for cylindrical probe structure is also reduced by the overlapping-grid technique. It is also confirmed that the measurement results of two kinds of antennas are shown reasonable agreement with prediction.