Demonstration of a planar W-band, kW-level extended interaction oscillator based on a pseudospark-sourced sheet electron beam

Shu, Guoxiang and Yin, Huabi and Zhang, Liang and Zhao, Junping and Liu, Guo and Phelps, Alan and Cross, Adrian and He, Wenlong (2018) Demonstration of a planar W-band, kW-level extended interaction oscillator based on a pseudospark-sourced sheet electron beam. IEEE Electron Device Letters, 39 (3). pp. 432-435. ISSN 0741-3106

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    Abstract

    A W-band extended interaction oscillator (EIO) driven by a pseudospark-sourced sheet electron beam (PS-SEB) is demonstrated in this letter. The idea of combining the advantages of a pseudospark-sourced electron beam (high beam current density), a sheet electron beam geometry (large beam cross-sectional area) and a ladder-like slow wave structure (high gain per unit length) to generate powerful millimeter-wave radiation was experimentally verified. The PS-SEB based EIO produced ~1.2 kW peak output power, an increase of six times in the measured power from an EIO based on a pseudospark-sourced pencil electron beam. Such a methodology offers a promising solution for portable, low-cost and powerful millimeter-wave and terahertz-wave radiation sources.