Title :
Wideband common noise suppression filter based on coupled microstrip lines and edge-coupled coplanar waveguides
Author :
Sangyeol Oh ; Jichai Jeong ; Jaehoon Lee
Author_Institution :
Dept. of Comput. & Radio Commun. Eng., Korea Univ., Seoul, South Korea
Abstract :
A common noise suppression filter in a differential pair using the coupled microstrip line (CML) to edge-coupled coplanar waveguide (ECCPW) transition is proposed. The filter consists of CMLs, ECCPWs, and shorting via holes that connect the CMLs and ECCPWs, and provides wideband common noise signal suppression using an even-mode impedance mismatching technique between the CMLs and ECCPWs and wideband differential signal propagation for highspeed circuit systems. A bandgap effect is realised in even mode, based on the CML to ECCPW transition without a multilayer. This method was verified using the three-dimensional full-wave high-frequency structure simulator and experimental measurements.
Keywords :
coplanar waveguides; impedance matching; microstrip lines; waveguide filters; waveguide transitions; CML; ECCPW transition; bandgap effect; coupled microstrip line; edge coupled coplanar waveguide; even-mode impedance mismatching technique; high-speed circuit system; wideband common noise suppression filter; wideband differential signal propagation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.3186
