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

Volume

51

Issue

25

fYear

2015

Firstpage

2123

Lastpage

2124

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;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2015.3186

Filename

7355516