采样率变换及在基带信号发生器中的应用  

Sample Rate Conversion and Application in the baseband Signal Generator

作　　者：李增红[1] 周时建 左永峰 

机构地区：[1]中国电子科技集团公司第41研究所,山东青岛266555

出　　处：《科技视界》2018年第23期107-108,39,共3页Science & Technology Vision

基　　金：国家重大科学仪器设备开发专项<微波矢量信号发生器开发和应用>资助

摘　　要：采样率变换方法在数字信号处理中得到日益广泛的应用。本文在比较了半带滤波器、级联积分梳状滤波器和多相滤波器等典型采样率变换滤波器结构的基础上,重点分析了采样率变换的原理,结合实际应用要求提出了一种新的法罗滤波器结构实现方式。并阐述了此种结构在FPGA内部的具体设计方法。本文最后给出的此方法在实际基带信号发生器中的测试结果,证明了其有效性。The method of sample rate conversion is widely used in digital signal processing. In this paper,a comparison of a series of typical filters with the sample rate conversion structure, such as halfband filter, cascade integrator comb filter and polyphase filter is provided. Then based on an analysis of the sample rate conversion prineiple,a novel implementation model of Farrow filter is proposed. A design method of the proposed model is illustrated in FPGA. Finally a group of test results achieved in a baseband signal generator are given to prove the validity of the proposed method.

关 键 词：采样率变换 法罗滤波器 基带信号发生器 

分 类 号：TN2[电子电信—物理电子学]