Multilayered Low Pass Microstrip Filter Using Csrr

In the present paper a multilayered microstrip low pass filter using complementary split ring resonator is proposed. A design for prominent stop band characteristics with minimized ripples is presented, while maintaining the filter pass-band performance. By properly designing and integrating the complementary split ring resonators with the low pass filter, the proposed structure exhibit superior pass band and stop band characteristics by eliminating unwanted spurious signals. Since the literature is multi-layered, no structure is designed at the ground plane and the problem of distortion of ground plane structure while packaging is resolved. The measured results indicate that the proposed structure achieves significantly improved band characteristics with minimum distortion, when compared with the simulated one.