VSAT射频功率放大控制链的研制  

Realizing VSAT Power Amplification Control Chain

作　　者：杨友民[1] 曾越胜[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《空军工程大学学报（自然科学版）》2004年第2期69-71,94,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：军队科研基金资助项目(KJ01713)

摘　　要：介绍了低成本VSAT的射频功率放大链的设计和研制情况。在研制中,根据应用环境以及技术指标的要求,选择了放大链路的放大级数以及各级的增益和功率输出值,同时,依据电路的空间大小以及低成本要求,选择了各级放大器的电路形式、采用器件和基片材料。并根据大系统的要求对该放大链提供了功率检测控制点和功率控制开关。设计和研制结果表明该电路在5925MHz～6425MHz范围内增益为67dB、通道起伏小于2dB,输出功率为5W,开关比为30dB,基本满足系统指标要求。The designing and realizing of the VSAT RF power amplification chain are presented. Based on the applying environment and the technique requirement, the number of the stages, the Gain of each stage and the output power of each stage are designed. Again based on the requirement of low cost and small volume, the configuration, active devices and substrate material of each stage of circuit are chosen. According to the requirement of system, some power detecting points and power controlling switch are provided for the amplification control chain. The results of design and development show that the circuits can provide 67 dB Gain, 5W output power, ± 1dBpp pass band ripple from 5925MHz to 6425MHz, the isolation of the channel switching is larger than 40dB.

关 键 词：VSAT LNA SSPA LANGE桥 ALC 

分 类 号：TN015[电子电信—物理电子学]