Directivity tuning of microstrip couplers

Publikationstyp
Conference Paper
Date Issued
2012-03
Sprache
English
Author(s)
Müller, Johannes 
Pham, Minh Nhat  
Jacob, Arne F.  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/8362
Start Page
1
End Page
4
Article Number
6185147
Citation
7th German Microwave Conference (GeMiC 2012)
Contribution to Conference
7th German Microwave Conference, GeMiC 2012  
Scopus ID
2-s2.0-84860752920
A method for tuning the directivity of directional couplers by simultaneously adjusting the phase velocity and the impedance level of the coupler is presented. It is shown that by using three symmetrically positioned capacitors, the solution of the compensation problem is under. Here, the additional degree of freedom is used to compensate the effect of typical manufacturing tolerances. A theory for the compensation with three capacitances is developed. Experimental proof is provided with a conventional mechanical tuning scheme. Measurement results show good performance, thus confirming the approach.
DDC Class
000: Allgemeines, Wissenschaft