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Micro-reentrant square cavities operating at high order modes have been demonstrated to be a viable solution for the realization of millimeter wave klystrons. However, the excitation of the required high order mode is a challenging task. The realization and measurement of a novel coupler for high order mode cavities is proposed.
Pseudospark electron beams of micro-sizes have been measured recently and their application to millimeter-wave and terahertz radiation generation is being investigated. A three cavity 94 GHz klystron using a micro-sized beam has been designed and simulated and is currently being constructed.
A small-scale pseudospark discharge is being investigated as the electron beam source for a klystron operating at a frequency of 94 GHz and single-gap discharge experiments have been carried out. The klystron has been designed using the particle-in-cell (PiC) code MAGIC-2D and simulated output looks promising.
A multicavity microklystron operating in the terahertz region has been designed and simulated. This microklystron will be driven by an electron beam sourced by a down-scaled pseudospark discharge.
Based on previous experimental investigations on pseudospark (PS) discharges, a small-scaled PS electron beam source was conceived to drive a 200 GHz microklystron. Recent PS e-beam experiments producing a beam of 1 mm in diameter and klystron interaction simulations will be presented. The microklystron will be fabricated using micro-electro-mechanical systems (MEMS) construction techniques.
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