Resonator for microwave magnetoelectric effect

Topological properties of microwave magnetoelectric fields.

Collective excitations of electron spins in a ferromagnetic sample dominated by the magnetic dipole-dipole interaction strongly influence the field structure of microwave radiation. A small quasi-two-dimensional ferrite disk with magnetic-dipolar-mode (MDM) oscillation spectra can behave as a source of specific fields in vacuum, termed magnetoelectric (ME) fields. A coupling between the time-va...

Microwave Resonator Filters for Advanced Wireless Systems

To my mother Kil Jung Lee and my father Seung Joo Lee ii ACKNOWLEDGEMENTS Getting Ph.D. was certainly a family endeavor, and my family has endured much sacrifice for the sake of my education. First I would like to thank my parents to whom my debt is simply infinite. I could not have accomplished what I did without their boundless love, sacrifice, support, and encouragement. My gratitude to my p...

Topological magnetoelectric effect decay.

We address the influence of realistic disorder and finite doping on the effective magnetic monopole induced near the surface of an ideal topological insulator (TI) by currents that flow in response to a suddenly introduced external electric charge. We show that when the longitudinal conductivity σ(xx)=g(e(2)/h)≠0, the apparent position of a magnetic monopole initially retreats from the TI surfa...

Microwave Open Resonator Techniques - Part II: Applications

A High-Q Microwave MEMS Resonator

A High-Q microwave (K band) MEMS resonator is presented, which employs substrate integrated waveguide (SIW) and micromachined via-hole arrays by ICP process. Nonradiation dielectric waveguide (NRD) is formed by metal filled via-hole arrays and grounded planes. The three dimensional (3D) high resistivity silicon substrate filled cavity resonator is fed by current probes using CPW line. This mono...