Abstract
Leapfrogging solitary waves are characterized in two capacitively coupled transmission lines that are periodically loaded with Schottky varactors, called coupled nonlinear transmission lines (NLTLs). The coupling implies that a nonlinear solitary wave moving on one of the lines is bounded with the wave moving on the other line, which results in the periodic amplitude/phase oscillation called leapfrogging. In this study, we clarify how the leapfrogging frequency depends on the physical parameters of coupled NLTLs using a numerical model validated through measuring test lines and demonstrate the relaxation of leapfrogging. In addition, coupled Korteweg-de Vries equations are derived by applying the reductive perturbation method to the transmission equations of coupled NLTLs. Using perturbation theory based on the inverse scattering transform, a closed-form expression of leapfrogging frequency is obtained and the parameter values that simulate the properties well are examined. Engineering applications based on leapfrogging are finally discussed.
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This work was partially supported by JSPS KAKENHI Grant Number 26420296.
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Narahara, K. Characterization of leapfrogging solitary waves in coupled nonlinear transmission lines. Nonlinear Dyn 81, 1805–1814 (2015). https://doi.org/10.1007/s11071-015-2108-z
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DOI: https://doi.org/10.1007/s11071-015-2108-z