Miniaturized Half-Mode Substrate Integrated Waveguide Bandpass Filter Loaded with Double-Sided Complementary Split-Ring Resonators

Abstract

Abstract A novel technique of miniaturizing for a half-mode substrate integrated waveguide bandpass filter by using a double-sided complementary split-ring resonator is presented in this article. With the proposed technique, a double-sided complementary split-ring resonator half-mode substrate integrated waveguide filter provides lower resonance frequency compared to its conventional counterpart because of the coupling effect between the complementary split-ring resonators of the top and bottom plates. The property of the double-sided complementary split-ring resonator is modeled by an LC resonance circuit. The frequency response of the double-sided complementary split-ring resonator shows bandpass characteristics. By applying the classical filter design methodology, the proposed filter was designed for desired filter specifications. Both circuit and full-wave simulated frequency responses have been attributed to the theory of the proposed technique, and good agreement was achieved with experiment results. Keywords: substrate integrated waveguidecomplementary split ring resonatordouble-sided-complementary split ring resonatorbandpass filter