Generation of subnanosecond pulses with bulk GaAs

Two circuits which utilize bulk GaAs to generate baseband subnanosecond pulses are described. The first circuit is a triggered monostable pulse regenerator while the second is a free-running relaxation oscillator which produces sharp pulses at repetition frequencies which can be an order of magnitude lower than the domain reciprocal transit time. This is possible since domain formation is limited for an extended period of time between pulses due to the presence of an external inductor.