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A new class of Multi helix based THz vacuum electron devices is under consideration easily fabricated using unconventional applications of microfabrication technology and modern computer modeling. This configuration will extend the operating range of the helical slow wave circuit into the THz frequency band. The design of a ∼140 GHz amplifier is described, which can be extended beyond 1.0 THz.
Vane loaded coaxial structures have been found useful for mode rarefaction, when used in oversized, over-moded gyrotron amplifiers. Also such circuits can compensate for the gain reduction which normally occurs while broad-banding of gyro-TWTs. This magnetron like structure was analyzed for its cut-off wave numbers by various techniques. In the present paper the dispersion and interaction impedance...
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