DocumentCode
1969179
Title
Broadband Matching of Microstrip Differential Phase Shifters
Author
Schiek, B. ; Kohler, Jennifer ; Schilz, W.
Author_Institution
Philips GmbH Forschungslaboratorium Hamburg, 2 Hamburg 54
fYear
1976
fDate
14-17 Sept. 1976
Firstpage
647
Lastpage
651
Abstract
Meanderline phase shifters in microstrip are badly matched (vswr ¿ 2), due to the difference in phase velocity of the odd and even mode of the coupled transmission lines. This is overcome by a stepped impedance design, allowing to realize e.g. a 90° phase shifter with a return loss better than 30 db across an octave bandwidth. Straightforward design equations are derived and confirmed by measurements on MIC´s in the frequency range 4 to 8 GHz and X-band.
Keywords
Bandwidth; Couplings; Distributed parameter circuits; Equations; Frequency; Impedance matching; Microstrip; Microwave integrated circuits; Phase shifters; Transmission line measurements;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1976. 6th European
Conference_Location
Rome, Italy
Type
conf
DOI
10.1109/EUMA.1976.332353
Filename
4131019
Link To Document