DocumentCode
1215933
Title
Design and realisation of reduced-size impedance transforming uniplanar MMIC branchline coupler
Author
Gillick, M. ; Robertson, Ian D. ; Joshi, J.S.
Author_Institution
Kings Coll., London Univ., UK
Volume
28
Issue
16
fYear
1992
fDate
7/30/1992 12:00:00 AM
Firstpage
1555
Lastpage
1557
Abstract
Design equations for the realisation of a reduced-size impedance transforming branchline coupler are presented together with the measured results of a fabricated prototype GaAs MMIC coupler using coplanar waveguide (CPW) transmission lines. The coupler which is less than 25% of the area of the standard branchline coupler has low coupling imbalance, with good return losses, and excellent isolation.
Keywords
III-V semiconductors; MMIC; gallium arsenide; impedance convertors; impedance matching; strip line components; waveguide components; CPW; GaAs; MMIC; area; branchline coupler; compact circuit layouts; coplanar waveguide; coupling imbalance; design equations; fabricated prototype; impedance transforming branchline coupler; isolation; measured results; realisation; reduced size impedance transformers; return losses; semiconductors; transmission lines;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19920987
Filename
153242
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