下变频器HSP50216在中频接收机中的应用

数字下变频技术作为高速数字信号处理的关键核心技术之一，在中频数字化接收机中起着至关重要的作用。本文介绍了可编程数字下变频器件HSP50216 的特点、内部结构和功能模块，及其在中频数字化接收机中的应用，大大地降低了采样频率和数据量，减轻了对DSP 计算需求的压力。另外由于其强大的可编程能力使得接收机的设计变得更为灵活和方便。
关键字：数字下变频器；中频数字化接收机；软件无线电
Abstract: Digital Down Converter technology is a key of high-speed digital signal processing which is very important in the digital IF receiver. The paper presents the feature, the block diagram and the functional description of the HSP50216 type Digital Down Converter in details, and then its application in IF receiver is given which reduce the sampling frequency and pressure of DSP. In addition, it makes the design of receiver more effectively and conveniently for its strong programming ability.
Keywords: Digital Down Converter; IF Digital Receiver; Software Radio