(A) study on the theoretical analysis and verification of resonator antenna using anisotropic properties of ferrite

Abstract

In today's wireless communication system with the emergence of 5G, importance of the RF system and device is increasing. RF system is used in so many field of our life, in order to provide a high quantity and quality service we need high-efficiency, high-gain, multi-functional and multiband antenna. But existing antenna has physical and technical limitation to enhanced antenna performance. Antenna with anisotropic material can be alternative for that limitation. Unfortunately, there is few theoretical study of the antenna with anisotropic material. So in this thesis we made theoretical model for analyzing the anisotropic(especially ferrite) antenna and did experiment applying steady magnetization. We proposed two kinds of antenna: first is ring ferrite resonator antenna and second is ring ferrite antenna filled with dielectric stack structure. We introduced theoretical model to predict the antenna's resonance frequencies exactly and also to analysis the mode splitting phenomena. And more, we verified proposed theory model with simulation and experiment.