Yanyu Wei

TL;DR: In this article, an open-sided periodic cusped magnetic (PCM) focusing through theoretically analyzed the transport characteristic of the elliptical sheet beam was proposed, and it was shown that the beam with transverse size 5 mm×0.4 mm can move through the beam tunnel in the axial distance 180 mm under the opensided PCM focusing without the "Diocotron" instability.

TL;DR: In this paper, a novel metamaterial slow wave structure (SWS) for backward wave oscillator (BWO) was proposed to develop the high power microwave source, which can produce 0552MW output power and an interaction efficiency of 984% at the typical frequency of 316GHz.

TL;DR: In this paper, the relation between microwave frequency and virtual cathode (VC) oscillation in a specific cylindrical cavity is analyzed by the means of model expansion method, and the expressions of mode expansion coefficients are derived.

TL;DR: In this article, a W-band two-section traveling-wave tube (TWT) model with double-groove loaded FWSWS is constructed and the nonlinear large-signal performance of such a TWT is investigated by a 3-D particle-in-cell (PIC) code MAGIC3D.

TL;DR: In this article, an all-metal interaction circuit for the millimeter-wave traveling-wave tube (TWT) with advantages of high power capacity, fine heat dissipation, scalability to smaller dimensions for shorter wavelengths, compact structure and robust performance is proposed.