A Novel Stepped-Patch Loaded CPW and Its Application to a Low-Pass Filter

Park, Jong-Kuk; Na, Hyung-Gi; Lim, Jong-Sik

doi:2010.10.3.117

J. Electromagn. Eng. Sci > Volume 10(3); 2010 > Article

Journal of the Korean Institute of Electromagnetic and Science 2010;10(3):117-120.
DOI: https://doi.org/10.5515/JKIEES.2010.10.3.117

A Novel Stepped-Patch Loaded CPW and Its Application to a Low-Pass Filter

Jong-Kuk Park¹, Hyung-Gi Na¹, Jong-Sik Lim²

¹LIG Nex1 ISR Research Center
²Department of Electrical and Communication Engineering, Soonchunhyang University

Abstract

A novel stepped-patch loaded coplanar waveguide(SPLCPW) structure is proposed and applied to the design of a low-pass filter(LPF). The stepped-patch loaded on the opposite side of the CPW plane is shown to provide a shunt-connected series L-C resonance, which is dual to that of a conventional CPW defected ground structure(DGS). As a simple example of the proposed SPLCPW circuit, a 3-pole SPLCPW LPF is designed and good results are obtained.

Key words: Stepped-Patch Loaded Coplanar Waveguide(SPLCPW), Low-Pass Filter(LPF)