Advanced characterization and design of compensated high directivity quadrature coupler

Publikationstyp
Conference Paper
Date Issued
2010-10-15
Sprache
English
Author(s)
Müller, Johannes 
Jacob, Arne F.  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/7959
First published in
IEEE MTT-S International Microwave Symposium digest  
Start Page
724
End Page
727
Article Number
5517872
Citation
IEEE MTT-S International Microwave Symposium Digest: 5517872 (2010-10-15)
Contribution to Conference
IEEE MTT-S International Microwave Symposium 2010  
Publisher DOI
10.1109/MWSYM.2010.5517872
Scopus ID
2-s2.0-77957819276
An efficient design procedure for directional couplers based on the effective even and odd mode characteristic impedances and electrical lengths is presented. These quantities which are extracted from the scattering parameters of the overall coupler structure allow for a systematic optimization. This is useful, for instance, when designing compensated high directivity couplers or when large bandwidth performance is desired. The method is applied to optimize a 2 GHz wiggly line coupler. Measurements yield a directivity of better than 30 dB from DC to 3.5 GHz, confirming the simulation results.