Accession Number : AD0820141

Title :   PICOSECOND RISETIME SWITCH STUDY.

Descriptive Note : Final rept.,

Corporate Author : IKOR INC BURLINGTON MA

Personal Author(s) : Proud, J. M. ; Huber, H. J.

Report Date : AUG 1967

Pagination or Media Count : 54

Abstract : This effort is part of a program aimed at utilizing nanosecond pulses to provide superior range resolution in long range radar. The generation of nanosecond pulses requires switches with picosecond risetime and jitter capabilities. The objective of this program was to develop the necessary switching techniques in the picosecond time domain. Apparatus and a measurement technique have been developed and applied to high voltage spark gap switching times in the 10 to the minus 11th power sec time domain. The investigation has included study of electrode material and surface condition leading to ultra-fast closure times in highly over-volted gaps brought about by enhanced high field electron emission. Closure times of 50 psec or less have been achieved. Ultraviolet triggering of overvolted gaps has been observed with jitter as low as 25 psec.

Descriptors :   (*ELECTRONIC SWITCHES, SPARKS), (*PULSE GENERATORS, ELECTRONIC SWITCHES), (*RADAR PULSES, PULSE GENERATORS), GAS DISCHARGES, ULTRAVIOLET RADIATION, ELECTRODES.

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE