高效率E类功放在遥测发射机中的应用  

Application of High Efficiency Class E Power Amplifier in Telemetry Transmitter

作　　者：曹韬[1] 吕立明[1] 

机构地区：[1]中国工程物理研究院电子工程研究所,绵阳621900

出　　处：《微波学报》2012年第5期56-60,共5页Journal of Microwaves

摘　　要：对提升PCM发射机工作效率的关键技术进行阐述。采用GaN器件设计了S频段具有谐波控制电路的逆E类功率放大器,输出功率10W,工作效率高达78%。将此高效功率放大技术用于PCM遥测发射机设计。实测结果表明,该发射机可适应码速率2Mbps的PCM信号,发射功率9.8W,整机效率可达57.6%。Design methodology of high efficiency PCM telemetry transmitter is presented. Practical S-band transmis- sion-line inverse class E power amplifier with series tunable parallel resonant tank using GaN transistor is built. The amplifier circuit is shown to be able to give 10W output power with drain efficiency of 78%. By using this high efficient technique, the telemetry transmitter, which is suitable for 2Mbps PCM signals, obtains an output power 9.8W with efficiency of 57.6%.

关 键 词：高效率 遥测 氮化镓 E类功放 发射机 

分 类 号：TN722.75[电子电信—电路与系统] TN830