PXI峰值功率分析仪的设计技术研究  

Research on design technology of PXI peak power analyzer

作　　者：徐达旺[1,2] 赵浩[1,2] 董占勇[1] 李强[1] 刘元商 

机构地区：[1]中国电子科技集团公司第四十一研究所,青岛266555 [2]电子测试技术重点实验室,青岛266555

出　　处：《国外电子测量技术》2016年第3期63-66,共4页Foreign Electronic Measurement Technology

摘　　要：介绍了一种PXI峰值功率分析仪的设计技术,该峰值功率分析仪采用PCI接口芯片+FPGA+DSP的紧凑的体系架构,较大的发挥了FPGA的灵活性,并充分利用DSP的数字信号处理能力,可用于采集和处理复杂的微波峰值功率信号。运用多种采样、校准和补偿技术实现对被测脉冲调制信号的多种幅度和时间参数的自动精确的快速测量,校准速度提升超36倍,测量准确度优化率达3%。阐述了PXI峰值功率分析仪的系统框架、整机原理和软件详细设计,对其中的数据采集、功率校准和功率补偿等关键技术进行了重点说明。This paper has introduced a new design method of PXI peak power analyzer .The PXI peak power analyzer’s compact architecture uses PCI interface chip ,FPGA DSP .It takes full advantage of FPGA＇s agility and DSP＇s data process ability .The analyzer can be used to acquire and process complex microwave peak power signal .Many methods of sampling ,calibration and compensation are used ,in order to make automatic and accurate measurement of input pulse modulation signal for many parameters .T he speed of calibration is improved more than 36 times ,and the accuracy opti‐mization is up to 3% .In this paper ,the system frame ,machine principle and software detailed design are discussed . M any key techniques are emphatically described ,including data acquisition ,pow er calibration and pow er compensation .

关 键 词：PXI 数据采集 校准 温度补偿 频响补偿 

分 类 号：TM931[电气工程—电力电子与电力传动] TN06[电子电信—物理电子学]