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所属单位：[1]Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China;[2]Lab Electromagnet Space Cognit & Intelligent Contr, Beijing 100089, Peoples R China

发表刊物：IEEE TRANSACTIONS ON ELECTRON DEVICES

关键字：Metamaterials; Electromagnetic waveguides; Oscillators; Mirrors; Dispersion; Circuit stability; Optical waveguides; Backward oscillation (BWO) stability; gyro-amplifier; metamaterial; phase compensation; planar circuit; quasi-optical

摘要：In this article, a planar quasi-optical waveguide (PQOW) circuit is proposed for vacuum electron devices (VEDs) for the first time. The circuit is made of a series of metamaterial pillars attached to a pair of parallel plates for phase compensation. It can propagate quasi-optical modes as a pair of concave mirrors does, while the lower order HE(0n )modes experience much heavier circuit loss compared to that of convention confocal waveguide circuits, which can improve the backward oscillation (BWO) stability of gyro-amplifiers. As an example, a W-band gyro-amplifier with PQOW circuits to replace conventional confocal circuits is designed. The 3-D particle-in-cell simulation demonstrated that the circuit is capable of producing stable high-power radiation within 96-108 GHz, with an electron efficiency of about 15% over the entire bandwidth.

第一作者：Yelei Yao et al.

文献类型：Article

卷号：70

期号：6

页面范围：3288-3294

ISSN号：0018-9383

是否译文：否