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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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DISPERSION AND DIELECTRIC EFFECTS ON REFLECTION AND TRANSMISSION OF ELECTROMAGNETIC WAVES PROPAGATING IN MULTIPLE STAGES OF TAPE-HELIX BLUMLEIN TRANSMISSION LINES

By Y. Zhang and J. Liu

Full Article PDF (591 KB)

Abstract:
Tape-helix transmission lines and helical coils have important applications in communication technology, signal measurement, pulse delay, pulse forming and antenna technology. In this paper, a set of fully dispersive propagation theory based on matrix method is firstly introduced to explain the propagation characteristics of travelling electromagnetic waves in multiple stages of helical Blumlein transmission lines with finite lengths. The different stages of helical transmission lines are filled with different propagation dielectrics, and the effects of dispersion and dielectrics on the propagation matrix and S-parameter matrix of the travelling waves are analyzed in detail. Relations of the exciting current waves in the series-connected helical Blumlein transmission lines are studied, and the dispersive transmission coefficients and reflection coefficients of electromagnetic waves at different dielectric ports are also initially analyzed. As an innovation, the proposed fully dispersive propagation theory which was demonstrated by simulation and experiments can substitute the non-propagating tape-helix dispersion theory and the non-dispersive telegraphers' equation to analyze the helical transmission lines.

Citation:
Y. Zhang and J. Liu, "Dispersion and Dielectric Effects on Reflection and Transmission of Electromagnetic Waves Propagating in Multiple Stages of Tape-Helix Blumlein Transmission Lines," Progress In Electromagnetics Research, Vol. 139, 145-176, 2013.
doi:10.2528/PIER13012806
http://www.jpier.org/PIER/pier.php?paper=13012806

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