Circular Complementary Split Ring Resonators (CSRR) based SIW BPF

Design of Full-Mode Substrate Integrated Waveguide (FMSIW) Band-pass Filter using circular complementary split ring resonators is presented in this paper. CSRR structures are introduced over planar SIW section to obtain band pass properties. CSRR structures are studied and their effects over the passband is presented. Improved isolation and minimal insertion loss have been achieved by using series CSRR structures. Several filter parameters are studied and presented with detailed analysis. Maximum and Minimum insertion loss of 2.15dB and 0.4dB are achieved. Stopband Attenuation >27 dB is obtained by the proposed technique.