A Broadband Transition Design for a Conductor-Backed Coplanar Waveguide and a Broadside Coupled Stripline

Author

Lu, Wen-Jun ; Bo, Ya-Ming ; Zhu, Hong-Bo

Author_Institution

Jiangsu Key Lab. of Wireless Commun., Nanjing Univ. of Posts & Telecommun., Nanjing, China

Volume

22

Issue

1

fYear

2012

Firstpage

10

Lastpage

12

Abstract

A broadband transition design between broadside coupled stripline (BCS) and conductor-backed coplanar waveguide (CBCPW) is proposed and studied. The E-field of CBCPW is designed to be gradually changed to that of BCS via a simple linear tapered structure. Two back-to-back transitions are simulated, fabricated and measured. It is reported that maximum insertion loss of 2.3 dB, return loss of higher than 10 dB and group delay flatness of about 0.14 ns are obtained from 50 MHz to 20 GHz.

Keywords

coplanar waveguides; microstrip transitions; waveguide transitions; BCS; CBCPW; back-to-back transitions; broadband transition design; broadside coupled stripline; conductor-backed coplanar waveguide; e-field; group delay flatness; insertion loss; linear tapered structure; return loss; Broadband communication; Conductors; Coplanar waveguides; Propagation losses; Prototypes; Transmission line measurements; Wireless communication; Broadband; broadside coupled stripline (BCS); conductor-backed coplanar waveguide (CBCPW); transition;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2176724

Filename

6107592