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Design and accuracy analysis of a broadband six‐port reflectometer utilizing coupled‐line directional couplers
Author(s) -
Staszek Kamil,
Gruszczynski Slawomir,
Wincza Krzysztof
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27630
Subject(s) - broadband , power dividers and directional couplers , microwave , calibration , reflection coefficient , bandwidth (computing) , port (circuit theory) , optics , scattering parameters , electronic engineering , engineering , electrical engineering , physics , telecommunications , quantum mechanics
Abstract A design of a broadband six‐port reflectometer has been presented.Broad bandwidth has been achieved with the use of coupled‐line directional couplers. An appropriate modification of a standard six‐port which ensures uniform circle centers' distribution against frequency has been proposed. The influence of power detectors' uncertainty on the calibration procedure and measurement results is discussed, and the estimated measurement accuracy is given. The performance of the presented six‐port reflectometer has been experimentally verified by measurements of the reflection coefficient in a frequency range 2–3.5 GHz. The obtained results are in good agreement with measurements performed with a commercial vector network analyzer. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1485–1490, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27607