S波段1 kW固态功率放大组件  

1 kW S-band Solid State Power Amplifier Module

作　　者：万建岗[1] 高玉良[1] 王新[2] 

机构地区：[1]空军雷达学院,武汉430019 [2]94981部队,江西樟树331200

出　　处：《固体电子学研究与进展》2009年第1期36-40,共5页Research & Progress of SSE

摘　　要：设计了一种工作在S波段,频带宽度为400MHz,平均占空比≤10%,脉冲宽度≤200μs的1kW固态功率放大组件。组件采用四级放大结构,将5mW左右的激励信号放大到1kW,通过优化晶体管输入/输出匹配电路,应用三级Wilkinson功分/合成器,改善了组件增益平坦度和效率。测试结果表明,该组件在工作频率范围内输出功率≥1.2kW,效率≥30%,增益平坦度≤1.2dB。This paper describes the design and fabrication of a 1 kW solid state power amplifier module which operating over s-band at a duty of 10 percent and with a pulse width of 200/μs, bandwidth of 400 MHz for radar application. The module consists of 4-stage cascaded power amplifier and the input signal of 5 mW can be amplified to over the peak of 1 kW. By optimizing matching circuits by using 3-stage Wilkinson divider/combiner the gain flatness and the thermal reliability is improved. Tests show the results of output of more than 1.2 kW corresponding to PAE of higher than 30% and gain flatness of 1.2 dB over the band.

关 键 词：固态功放 匹配电路 Wilkinson功分/合成器 

分 类 号：TN957.3[电子电信—信号与信息处理]