Composite High-Q Micrsostrip Resonator Using Effective Highly Dispersive Materials

A composite high-Q microstrip resonator is proposed by using effective highly dispersive (EHD) materials with electromagnetically-induced-transparency-like (EIT-like) spectrum. We show that a defective microstrip photonic crystal (PC) can be utilized as an EIT-like material with dispersion controlled by simply adjusting the structure parameters. Both simulation and experiment results demonstrate that, compared to traditional methods, Q-factor boosts much more quickly and peak-transmission decreases much slower at the same time for composite resonator.