TITLE:
Generation and Shaping of Soliton-Like Pulses along Resonant Tunneling Diodes NMOS Varactors Lattice
AUTHORS:
Yerima Klofaï, Bernard Z. Essimbi
KEYWORDS:
Accumulation-Mode MOS; Soliton-Like Pulse Generation and Shaping; Resonant Tunneling Diode; Active Nonlinear Electrical Lattice; Expanded KdV Equation
JOURNAL NAME:
Journal of Modern Physics,
Vol.4 No.8,
August
13,
2013
ABSTRACT: The characteristics of N-type
accumulation-mode MOS (NMOS) varactors line periodically loaded with resonant
tunneling diodes (RTDs) are used for soliton-like pulses generation and
shaping. The problem of wide pulse breaking up into multiple pulses rather than
a single is solved. Applying perturbative analysis, we show that the dynamics
of the nonlinear transmission line (NLTL) is reduced to expanded Korteweg-de
Vries (KdV) equation. Moreover, numerical integration of nonlinear differential
and difference equations that result from the mathematical analysis of the line
is discussed. As results, NLTL can simultaneously sharpen both leading and
trailing of pulse edges and one could obtain a rising and sharpening step
pulse.