ABSTRACT
This chapter explains the applications of split ring resonators (SRR) and their complementary counterparts to the design of microwave circuits and devices. It begins with where the two alternative approaches to the synthesis of metamaterial transmission lines. The chapter highlights the applications and analysis of the key aspects that make SRRs and complementary split ring resonators (CSRR) useful particles for microwave device design. The most interesting application of SRRs and CSRRs is, due to its resonant nature, in the field of filters. The chapter introduces the varactor-loaded split ring resonator as a tunable component of practical use for the design of reconfigurable components such as notch filters and resonators. Metamaterial transmission lines are one-dimensional artificial propagating media that exhibit either a single-negative or a double-negative behavior. Metamaterial transmission lines can be alternatively implemented by loading a host transmission line with SRRs or CSRRs.
