Title :
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
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;
Conference_Titel :
Microwave Symposium Digest, 2008 IEEE MTT-S International
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1780-3
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2008.4633331
