title: Dynamics and properties of waves in a modified Noguchi electrical transmission line.
abstract: We consider a modified Noguchi electrical transmission line and examine the effects of a linear capacitance C(s) on the wave characteristics while considering the semidiscrete approximation. It appears that wave modulations in the network are governed by a dispersive nonlinear Schrödinger equation whose coefficients are shown to be a function of C(s). We show that the use of this linear capacitance makes the filter more selective. We also show that the width of the unstable regions increases while that of the stable regions decreases with C(s) adding consequently the width of the frequency domain where bright solitons exist. Furthermore, we establish the existence of one more region (compared to the work of Marquié et al. [Marquié et al., Phys. Rev. E 49, 828 (1994)]) in the dispersion curve that allows the motion of envelope solitons of higher frequency in the system. Numerical and experimental investigations done on the model confirm our analytical predictions.
authors.affiliation: Laboratoire de Mécanique et de Modélisation des Systèmes Physiques, Département de Physique, Université de Dschang, BP 69 Dschang, Cameroun.
authors.forename: F B
authors.initials: FB
authors.lastname: Pelap
authors.affiliation: Laboratoire de Mécanique et de Modélisation des Systèmes Physiques, Département de Physique, Université de Dschang, BP 69 Dschang, Cameroun.
authors.forename: J H
authors.initials: JH
authors.lastname: Kamga
authors.affiliation: Department of Physics, Higher Teacher Training College Bambili, University of Bamenda, P.O. Box 39 Bamenda, Cameroon.
authors.forename: S B
authors.initials: SB
authors.lastname: Yamgoue
authors.affiliation: Laboratoire de Mécanique et de Modélisation des Systèmes Physiques, Département de Physique, Université de Dschang, BP 69 Dschang, Cameroun.
authors.forename: S M
authors.initials: SM
authors.lastname: Ngounou
authors.affiliation: Laboratoire de Mécanique et de Modélisation des Systèmes Physiques, Département de Physique, Université de Dschang, BP 69 Dschang, Cameroun.
authors.forename: J E
authors.initials: JE
authors.lastname: Ndecfo