利用衰减涂层抑制220GHz行波管振荡的试验研究  

Experimental Study on Oscillation Suppressing of 220 GHz TWTs by Using Microwave Attenuation Coating

作　　者：张琳[1] 唐烨[1] 潘攀[1] 李天一[1] 

机构地区：[1]中国电子科技集团公司第十二研究所微波电真空器件国家重点实验室,北京100015

出　　处：《真空电子技术》2017年第4期43-45,共3页Vacuum Electronics

摘　　要：针对220GHz行波管的振荡现象,本文研究了FeSiAl合金衰减材料涂层对振荡功率的影响。冷测结果表明,通过在折叠波导慢波结构表面涂覆FeSiAl衰减材料,使折叠波导慢波结构的传输损耗提高了6dB。热测结果表明,带有衰减涂层的行波管起振电压范围更小,振荡功率更低。In view of the oscillation of 220 GHz TWTs,the effect of FeSiAl alloy attenuation coating on oscillating power is investigated.The cold test results show that the transmission loss of the folded waveguide slow wave structure is improved by 6 dB by coating FeSiAl attenuation material.Thermal test results show that the TW Ts with attenuation coating have smaller oscillation voltage range and lower oscillation power.

关 键 词：20GHz行波管 折叠波导 振荡 衰减 

分 类 号：TN124[电子电信—物理电子学]