Computer simulation of TRAPATT device-circuit interactions

A computer simulation is presented of device-circuit interactions in coaxial TEM-mode Time-Delay-Triggered TRAPATT Circuits, as well as simulations of related problems such as relaxation oscillations and a comparison of dc to RF conversion efficiencies of complementary TRAPATT devices. A comparison of the conversion efficiencies of two complementary TRAPATT structures was carried on under the constraint of a square wave external current. This analysis confirmed experimental reports that stated that in some circumstances the N(+)P structure is more efficient than its complementary P(-)N. Special emphasis was put on the analysis of the turn-on transient in a coaxial TRAPATT circuit. Ways of reducing the turn-on time in practical circuits are suggested here on the basis of this analysis.