中频数据采集前端电路的设计  

Design of circuit before IF data sampling

作　　者：陈丽[1] 

机构地区：[1]中国电子科技集团公司第41研究所,青岛266555

出　　处：《国外电子测量技术》2009年第7期45-48,共4页Foreign Electronic Measurement Technology

摘　　要：首先介绍了中频采样系统中前端抗混叠滤波器技术指标的确定方法,重点论述了采用ANSOFT公司的Designer微波仿真软件设计抗混叠滤波器的方法,以及如何对设计结果进行优化。目前,采用该设计方法设计的电路已经成功应用于一种便携式频谱分析仪的设计中,经验证,其技术指标达到了预先的设计要求。Firstly the thesis introduces how to get the specifications of anti-aliasing filter in IF sampling system, and the emphases of the article is the design of anti-atiasing filter by Designer microwave simulation software of ANSOFT Corporation, simulation and optimization of design results. The circuit designes by this method has been successfully applied to a portable spectrum analyzer,and the specifications meet the design needs after testing.

关 键 词：抗混叠滤波器 带通抽样定理 仿真 

分 类 号：TN713[电子电信—电路与系统]