STUDY OF RESONANCE BEHAVIOUR OF MICROSTRIP PATCH ANTENNA ON BIASED FERRITE SUBSTRATE

摘要

The resonance behaviour of a microstrip patch on a lossy biased ferrite substrate is investigated. The analysis is based on a full wave integral equation formulation in conjunction with the method of moments. In the analysis the direction of the biased field is not prescribed. It is found that the resonant frequencies of a patch vary significantly with the change of the biased field except those resonant modes with a dominant magnetic field component in the direction of the biased field. This phenomenon is explained with a waveguide cavity model and provides an independent check of this analysis.