A compact-size microstrip rat-race coupler with high performance

A compact slow-wave microstrip rat-race coupler is presented. The present asymmetrical T-structure slow-wave loading achieves size reduction more than that obtained using traditional symmetrical T-structure along with wide range harmonic suppression performance. Lossless transmission line model is u...

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Bibliographic Details
Main Authors: Velidi, V K, Shrivastava, S, Sanyal, S
Format: Conference Proceeding
Language:English
Subjects:
compact
harmonic suppression
microstrip
Mixers
Rat-race coupler
slow-wave effect
Online Access:Request full text
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Summary:A compact slow-wave microstrip rat-race coupler is presented. The present asymmetrical T-structure slow-wave loading achieves size reduction more than that obtained using traditional symmetrical T-structure along with wide range harmonic suppression performance. Lossless transmission line model is used to derive the design equations. A compact RRC occupying only 34% of the conventional RRC at 1.0 GHz with no harmonic passband up to 6.0 GHz is demonstrated for validation using two fullwave electromagnetic simulators and the results are in good agreement.
DOI:10.1109/TECHSYM.2011.5783801