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Keywordszeroi
termediatefreque
cydemodulatio
AD9854FPGANIOS_IIfreque
cycharacteristics
II
f目录
摘要I
AbstractII
1绪论11课题的研究背景、目的及意义112频率特性测试仪的现状113国内外概况214课题研究内容与组织结构安排215本章小结32系统设计方案的研究21系统的控制特点与性能要求4211系统的控制特点4212系统的性能要求422系统实现的几种具体方法和电路分析5221扫描信号源的实现方法分析5222幅度检测电路实现方法的分析6223相位检测电路实现方法的分析7224零中频解调电路原理分析823本章小结103零中频解调电路的设计与实现31零中频解调电路设计方案论证11311模拟方式与数字方式性能比较11312模拟方式与数字方式成本比较1132零中频解调电路设计方案及实现12321实r