Dynamics of dissipative solitons developed in a closed traveling‐wave field‐effect transistor

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.