空间行波管放大器杂波抑制技术研究  

Research of Spurious Suppressed in Space Travelling Wave Tube Amplifier

作　　者：马奎安[1] 李晖[1] 禹旭敏[1] 范培云[1] MA Kuian;LI Hui;YU Xumin;FAN Peiyun(China Academy of Space Technology (Xi’an ),Xi’an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2019年第2期10-14,共5页Space Electronic Technology

摘　　要：空间行波管放大器(TWTA)输出杂波频率与载波频率的距离通常小于100kHz,杂波导致通信卫星误码率增大;当遥感卫星探测到假目标时,采用微波滤波器难以有效进行抑制。为了抑制TWTA输出杂波,文章研究了TWTA的杂波产生机理,从行波管(TWT)和电源(EPC)两方面入手进行设计,通过对现有产品进行改进,使TWTA的输出杂波下降了7dB。研究结果表明,通过优化TWT的杂波敏感度并改善EPC的输出纹波,能够有效抑制TWTA的输出杂波。The distance of the spurious frequency and carrier frequency which occurs in space travelling wave tube amplifier (TWTA) output signal is less than 100kHz,spurious causing error rate of Comsat, fake targets of Remote Sensing Satellite,it is hard to suppress by the microwave filters,to suppress the output spurious of TWTA, this paper study the principles of TWTA spurious, traveling wave tube (TWT) and power supply (EPC) design method is discussed,improvement of the existing TWTA,the spurious decreases 7dB,the results show that by optimizing the spurious sensitivity of TWT and improving the output ripple of EPC ,the output spurious of TWTA can be effectively suppressed.

关 键 词：空间 行波管 电源 杂波 

分 类 号：TB332[一般工业技术—材料科学与工程]