A preliminary study of maximum system-level crosstalk at high frequencies for coupled transmission lines

Simple formulas were derived to quickly estimate maximum crosstalk between wires in a harness at high frequencies, where the length of circuits is comparable with or greater than the wavelength of the signals of interest. Formulas were derived from multi-conductor transmission line theory. When the...

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Bibliographic Details
Main Authors: Dong, X., Weng, H., Beetner, D.G., Hubing, T., Wiese, R., McCallum, J.
Format: Conference Proceeding
Language:English
Subjects:
Applied sciences
Coupling circuits
Crosstalk
Distributed parameter circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Equations
Exact sciences and technology
Frequency estimation
Impedance
Multiconductor transmission lines
Transmission line theory
Transmission lines
Wires
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Summary:Simple formulas were derived to quickly estimate maximum crosstalk between wires in a harness at high frequencies, where the length of circuits is comparable with or greater than the wavelength of the signals of interest. Formulas were derived from multi-conductor transmission line theory. When the source and load resistances are either both large or both small compared to the characteristic impedance of the transmission line, maximum coupling is shown to be given by approximately X/sub MAX/ = C/sub m//(C/sub 22/ + C/sub m/). A similar equation was found for the case where the load impedances are matched. Experiments show these equations predict the maximum value of coupling well.
DOI:10.1109/ISEMC.2004.1349828