A high power Ka band millimeter wave generator with low guiding magnetic field

A high power Ka band millimeter wave generator with low guiding magnetic field
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一种低引导磁场高功率Ka波段毫米波发生器

DOI:
10.1063/1.3469575
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发表时间:
2010-08
期刊:
影响因子:
2.2
通讯作者:
Zhang, Zehai
Zhang, Zehai
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhu, Jun;Shu, Ting;Zhang, Jun;Li, Guolin;Zhang, Zehai

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本文提出了一种慢波型吉瓦级毫米波发生器。为了增加功率容量,已经使用具有较大直径的过模慢波结构(SWS)。利用过模SWS的“表面波”特性,可以选择TM{sub 01}模式作为工作模式。计算结果与粒子模拟结果一致。通过PIC模拟对器件的主要结构参数进行了优化。典型的模拟结果是,在束流参数为600 keV和5.05 kA,引导磁场为0.85 T时,产生了输出功率为1.05 GW的Ka波段毫米波,转换效率约为35%。
A slow wave type gigawatt millimeter wave generator is proposed in this paper. In order to increase power capacity, overmoded slow wave structures (SWSs) with larger diameter have been used. Taking advantage of the ''surface wave'' property of overmoded SWSs, the TM{sub 01} mode can be selected to be the operating mode. Calculations have also been carried out to choose a proper low operating magnetic field strength, and it agrees with particle in cell (PIC) simulations. Main structure parameters of the device are optimized by PIC simulations. A typical simulation result is that, at the beam parameters of 600 keV and 5.05 kA, and guiding magnetic field of 0.85 T, a Ka band millimeter wave with an output power of 1.05 GW is generated, yielding a conversion efficiency of about 35%.
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