Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMTT.2007.914626
Title: Six-port reflectometer based on modified hybrid couplers
Authors: Yao, J.J.
Yeo, S.P. 
Keywords: Coplanar-waveguide (CPW) couplers
Six-port reflectometers
Issue Date: Feb-2008
Source: Yao, J.J., Yeo, S.P. (2008-02). Six-port reflectometer based on modified hybrid couplers. IEEE Transactions on Microwave Theory and Techniques 56 (2) : 493-498. ScholarBank@NUS Repository. https://doi.org/10.1109/TMTT.2007.914626
Abstract: Six-port reflectometers have traditionally employed hybrid couplers as their building blocks, but the instruments reported thus far in the literature do not comply with the optimum design specifications. This paper describes a six-port reflectometer based on four-port coplanar-waveguide couplers that have been modified so as to meet such design requirements. Additional design parameters have been incorporated so that adjustments may be made to correct for residual hardware imperfections. Laboratory tests have confirmed an operating bandwidth of 90% (from 1.1 to 2.9 GHz) for the resulting reflectometer. © 2008 IEEE.
Source Title: IEEE Transactions on Microwave Theory and Techniques
URI: http://scholarbank.nus.edu.sg/handle/10635/57427
ISSN: 00189480
DOI: 10.1109/TMTT.2007.914626
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