Accession Number : ADA194969

Title :   Numerical Simulation of the Function of Scientific Instrumentation for Measuring the Speed of Electron Devices.

Descriptive Note : Final rept. 1 Aug 87-31 Jan 88,

Corporate Author : SCIENTIFIC RESEARCH ASSOCIATES INC GLASTONBURY CT

Personal Author(s) : Osman, M A ; Grubin, H L ; Morrison, B J

PDF Url : ADA194969

Report Date : 30 Mar 1988

Pagination or Media Count : 67

Abstract : The feasibility of using numerical simulation to assess the function of scientific instrumentation for measuring the speed of electron devices has been demonstrated by obtaining (1) the dc characteristics of the VHEMT and PHEMT, (2) transient response of the PHEMT to picosecond voltage pulses superimposed on the gate. The drift and diffusion and Poisson's equations were solved in two dimensions. The HEMT and PHEMT demonstrated transconductance of 94 and 375 mS/mm, respectively. The transient response is strongly dependent on the pulse shape and duration.

Descriptors :   *ELECTRONIC EQUIPMENT, *INSTRUMENTATION, *PULSES, DIRECT CURRENT, DRIFT, EQUATIONS, MATHEMATICAL MODELS, NUMERICAL ANALYSIS, RESPONSE, SHAPE, TRANSIENTS, VELOCITY, VOLTAGE

Subject Categories : Test Facilities, Equipment and Methods
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE