Generation of short millimeter-wave radio pulses using solitons in ferrite-based active rings

A method of generation of short high-power radio pulses at millimeter-wave frequencies is proposed. It uses pulsed self-generation in an active ring s tructure consisting of a wide-band millimeter-wave amplifier and a delay li ne, based on a highly anisotropic hexagonal ferrite film. The ring structur e is operated in the nonlinear regime allowing self-generation of a periodi c train of short soliton-like millimeter-wave radio pulses. The pulse power (P similar to1.7 kW) and duration (tau similar to2 ns) in the train are de termined by the amplifier gain and the parameters of the hexaferrite film, while the period between pulses is determined by the time delay in the acti ve ring. (C) 2001 American Institute of Physics.