volume | PIER Journals

Abstract

We characterize the pulse propagation on a traveling-wave field-effect transistor (TWFET) with the drain line periodically loaded with Schottky varactors for short pulse amplification. Owing to the coupling between the gate and drain lines, two propagation modes are developed on a TWFET. It is expected that the pulses carried by one of the two modes are uniquely amplified, whereas those carried by the other mode are attenuated. By properly introducing nonlinearity via the loaded varactors, the proposed TWFET succeeds in the amplification of short pulses by compensating for dispersive distortions. This study verifies the design criteria for the amplification of short pulses in TWFETs through the experimental observation of the properties of the linear and nonlinear pulses on a TWFET.

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Dr. R. Sugai

Dr. T. Shima

Prof. Koichi Narahara