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引用次数: 0
摘要
利用市售的粒子池(Particle- in - cell, PIC)代码“CST Particle Studio”，设计并研究了周期性介质加载W波段回旋回旋管的波束相互作用特性。该回旋回旋管工作在圆形te01模式下，由57kV直流电压和5A电子束电流驱动。输出部分的介电负载抑制了杂散后向波模式，包括TE11、TE21和二次谐波TEo2模式。该介质负载回旋回旋管在te01模式下的峰值射频输出功率为~84 kW。功率转换效率和饱和增益分别为~ 29%和~32 dB。
PIC Simulation of a Periodically Dielectric Loaded Millimeter Wave Gyro-twystron Amplifier
A periodically dielectric loaded W -band gyro-twystron has been designed and studied for its beam-wave interaction behavior using a commercially available Particle-In-Cell (PIC) code “CST Particle Studio”. The present gyro-twystron is operated in circular TE01mode and driven by the DC voltage of 57kV and 5A of electron beam current. The dielectric loading in the output section suppresses the spurious backward wave modes, including TE11, TE21, and second harmonic TEo2 modes. The PIC simulation of the present dielectric loaded gyro-twystron produced a peak RF output power of ~84 kW at 94 GHz in TE01mode. The power conversion efficiency and the saturated gain are calculated as ~29 % and ~32 dB, respectively.
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