Analysis and design of impedance transformed balun integrated microwave probe for differential circuit measurement

Author

Kim, Jae S. ; Eisenstadt, William R. ; Andrew, Mike ; Hanaway, Peter

Author_Institution

ECE, University of Florida, Gainesville, 32611, USA

fYear

2008

fDate

15-20 June 2008

Firstpage

56

Lastpage

61

Abstract

This paper presents an integrated broadband balun probe for differential circuit measurements. The balun consists of the two broadside coupled coplanar strips with a finite ground plane. A new analysis method for the Marchand balun is developed for optimizing design parameters. The design parameters are calculated from newly developed conformal mapping analytic expressions. This method verifies the serious effects of the ground plane width variation in a broadside coupled CPS. Final balun design shows a very wide bandwidth (20~100 GHz) with small phase difference (<5deg).

Keywords

baluns; coplanar waveguides; probes; strip lines; Marchand balun; balun integrated broadband microwave probe; bandwidth 20 GHz to 100 GHz; broadside coupled coplanar strips; differential circuit measurement; finite ground plane; impedance transform; phase difference; Bandwidth; Conformal mapping; Coupling circuits; Design optimization; Impedance matching; Impedance measurement; Integrated circuit measurements; Microwave measurements; Probes; Strips; Balun; Broadside coupled coupled-lines; conformal mapping; coplanar strip;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2008 IEEE MTT-S International

Conference_Location

Atlanta, GA

ISSN

0149-645X

Print_ISBN

978-1-4244-1780-3

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2008.4633331

Filename

4633331