星用高性能高可靠微波放大器单机研制  

Development of a High-Performance and High-Reliability Microwave Amplifier for Satellite Application

作　　者：桂勇锋[1] 丁德志[1] 金来福 陈该青[1] 马骏[1] 邹永庆[1] GUI Yongfeng;DING Dezhi;JIN Laifu;CHEN Gaiqing;MA Jun;ZOU Yongqing(The 38th Research Institute of China Electronics Technology Group Corporation, Hefei 230088, China)

机构地区：[1]中国电子科技集团公司第三十八研究所,安徽合肥230088

出　　处：《雷达科学与技术》2021年第6期722-727,736,共7页Radar Science and Technology

摘　　要：作为新一代长寿命高可靠卫星有效载荷系统的关键单机,本文设计了一款星用S波段微波放大器,通过突破单机高可靠架构设计技术,大动态输入过载保护、电源及射频通道安全性等保护电路设计技术,微波电路防自激及腔体效应、EMC等稳定性设计技术,单机高效散热技术等关键技术;使得单机实测带内增益起伏≤0.081 dB、驻波≤1.27、通道间幅度一致性≤±0.075 dB,在激励过载20 dB、电压拉偏90~110 V、驻波拉偏3∶1下仍能正常工作,供电单元具有输入过流保护、输出过流保护、输出过压保护等功能,12年末期可靠度优于0.998;从而实现了放大器单机的高性能、长寿命和高可靠,本单机初、正样阶段零归零、指标零超差、星载环境试验零故障;目前在轨工作正常、稳定。As the key electronic device of a new generation of long-life and high-reliable satellite payload system,the design of a satellite-borne S-band microwave amplifier was presented.By resolving key techniques of the high-reliability architecture design technique,the protecting circuit design technique of large dynamic input overload protection,power supply and radio frequency channel safety,the microwave circuit design of anti-self-excited oscillation and anti-cavity-effect,EMC and other stability design techniques,high-efficiency heat dissipation technique,the test results of gain fluctuation≤0.081 dB,VSWR≤1.27,and amplitude consistency between channel≤±0.075 dB were obtained.The microwave amplifier can still work normally under 20 dB excitation overload,90~110 V voltage bias,and 3∶1 VSWR.The power supply unit has input overcurrent protection,output overcurrent protection,output overvoltage protection,etc.The reliability degree at the end of 12 years is better than 0.998.According to test results,the amplifier achieved high performance,long life and high reliability.During original stage and flight model stage,no significant quality and technical problems were detected.The performance of the amplifier is normal and stable on orbit.

关 键 词：星用 S波段 微波放大器 高性能 高可靠 

分 类 号：TN957.3[电子电信—信号与信息处理]