Study of the Deleterious Effect of Common-Mode Behavior on CPS Branch-Line Couplers and Wilkinson Dividers

Author

Lok, Lai Bun ; Elgaid, K. ; Hwang, C.-J. ; Robertson, Ian D. ; Chongcheawchamnan, M.

Author_Institution

Univ. of Glasgow, Glasgow, UK

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

An experimental study into the design and measurement of a balanced Branch-line coupler and Wilkinson divider using coplanar strip (CPS) transmission lines is presented. While these balanced passive components show great potential for differential microwave signal processing applications, it is shown that their undesirable common-mode behavior needs to be addressed for them to be of any use in practice. Some techniques for doing this are proposed based on results from mixed-mode S-parameter investigations.

Keywords

S-parameters; coplanar transmission lines; microstrip couplers; microstrip lines; CPS branch-line couplers; Wilkinson divider; balanced Branch-line coupler; balanced passive components; coplanar strip transmission lines; differential microwave signal processing applications; mixed-mode S-parameters; undesirable common-mode behavior; Coplanar transmission lines; Couplers; Distributed parameter circuits; Frequency conversion; Impedance matching; Power transmission lines; Scattering parameters; Strips; Transformers; Transmission line measurements; Couplers; coplanar waveguides; transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554823

Filename

4554823