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Dynamics of dissipative solitons developed in a closed traveling‐wave field‐effect transistor
Author(s) -
Narahara Koichi
Publication year - 2018
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.2509
Subject(s) - dissipative system , dissipation , physics , spice , dispersion (optics) , nonlinear system , limit (mathematics) , field (mathematics) , quantum electrodynamics , classical mechanics , mathematical analysis , quantum mechanics , mathematics , engineering , electrical engineering , pure mathematics
Summary A traveling‐wave field‐effect transistor (TWFET) balances not only nonlinearity and dispersion but also dissipation and amplification. It therefore supports dissipative solitons (DSs). By applying reduction theory to a model equation of the device, we found repulsive interaction between 2 relatively distant DSs, meaning that when 2 DSs rotate on a closed TWFET, they should separate evenly at the asymptotic limit. We then carried out several SPICE calculations on a closed TWFET and demonstrated that 2 DSs asymptotically rotate such that the one occupies the other's antipodal point. The SPICE calculations also admit a bound state, in which the 2 rotating pulses maintain a relatively small separation.