miniaturized high-pass filter based on balanced composite right-left handed transmission line using meander spiral complementary split ring resonators

In this paper, a compact high-pass filter (hpf) with a sharp rejection response based on the balanced composite right-left handed (crlh) transmission line (tl) concept is proposed. a series lc resonator using an interdigital capacitor and meander lines is designed. also, a meander spiral complementary split ring resonator (mscsrr) is used to realize the parallel lc resonator. the high-pass filter is implemented in microstrip technology by etching mscsrr, in the ground plane, and series interdigital capacitor with meander lines, in the signal strip. because of a smaller electrical size of the proposed mscsrr and also by using meander lines instead of conventional transmission lines, the total physical dimension of the proposed high-pass filter has been reduced. a detailed analysis of the structure, based on the equivalent circuit model is provided. the structure exhibits a balanced crlh behavior and by properly tuning the geometry of the elements, a high-pass response with a sharp transition band is obtained. to validate the design concept, the proposed high-pass filter has been fabricated and tested. experimental verification is provided and a good agreement has been found between the simulation and measurement results. to our knowledge, the size of proposed hpf is more compact in comparison with known similar filters.