Abstract
In this work, we study mathematical modeling of a cylindrical Field Effect Transistor (C-FET) as a tera hertz (THz) emitter. General dispersion relation including effect of small drift velocity, momentum relaxation time, and electron fluid viscosity are obtained for C-FET. We show that the plasma spectrum and their amplitude depend on the radius of C-FET. The analytical expression for the total radiated power, which to our best knowledge has been derived for the first time, shows the dependency of the radiated power to various transistor parameters such as drift velocity, momentum relaxation time and electron fluid viscosity.
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