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Determine Twisted-Line Characteristic Impedance

Balanced twisted bifilar transmission lines are often used in high-frequency signal-processing applications, in impedance transformers, signal combiners, and power dividers. To apply these transmission lines and structures based on them in high-frequency circuits and systems, the characteristic impe...

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Bibliographic Details
Published in:Microwaves & RF 2008-01, Vol.47 (1), p.66
Main Authors: Junior, Antonio Alves Ferreira, Ribeiro, Jose Antonio Junstino, Do Pereira, Wilton Ney Amaral
Format: Magazinearticle
Language:English
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Summary:Balanced twisted bifilar transmission lines are often used in high-frequency signal-processing applications, in impedance transformers, signal combiners, and power dividers. To apply these transmission lines and structures based on them in high-frequency circuits and systems, the characteristic impedance of the twisted lines must be known. Once a solution has been found for connecting these balanced lines to the unbalanced ports of standard test equipment, it is possible to use a commercial vector network analyzer (VNA) for accurate measurements of characteristic impedance on balanced twisted bifilar transmission lines.
ISSN:0745-2993
2162-1411