Nanosecond pulsed switch triggered by array microhollow cathode discharge

Triggered by array microhollow cathode structure， nanosecond pulsed switches can realize multichannel discharge at atmosphere with low trigger voltage. Double sided printed circuit board drilled by means of laser was used as array microhollow cathode， and the influence of switch duty factor， trigger current， the number of microhollow cathode holes and the diameter of the microhollow cathode holes on the trigger voltage and the delay and jitter of the switch is discussed. The results show that more microhollow cathode holes and 100 m diameter of the microhollow cathode hole result in lower trigger voltage， and higher trigger current， larger duty factor of the switch and more microhollow cathode holes result in shorter switch delay time with decreased jitter. In designing nanosecond pulsed switches， switch performance will be improved with more consideration of the factors above.