Novel compact CPW filter for MICs using metamaterial structures

A band pass filter for Q-band MIC application is presented using two sets of resonator of different dimensions on Silicon substrate. The two resonators are implemented with the help of metamaterial structures and compactness is achieved by placing the resonators on both signal and ground planes of a Co Planar Waveguide (CPW). The resonators are realized using Complementary Split Ring Resonators (CSRRs). An equivalent circuit of the proposed design is presented along with the fabricated structures. Extraction of the LCR parameters of the proposed equivalent circuit is demonstrated. Further, it is seen that changing the metamaterial structure geometry from CSRR to Complementary U-shaped Split Resonators (CUSRs) tailoring of the pass-band can be achieved. By using different combinations of these two resonators, it is possible to tailor the bandwidth of the filter.