摘要
介绍了数字下变频器HSP50214B的内部结构及其在软件无线电中的应用.首先阐述了HSP50214B模块具有的数字混频、滤波、自动增益控制等功能,通过解调AM信号的一个实例,设计了一个DSP与下变频器的电路,并给出了下变频器部分控制字,展示了下变频器在软件无线电中强大的功能和良好的可编程性.
The inner architecture of Digital Down Converter HSP50214B and its application to software radio were introduced. At first, the performance of each component, such as NCO, mixing, AGC, was explained. Then an example of demodulation of AM signal and circuit of DSP and DDC was introduced in detail ,and some control words of DDC were given , too . The good function and programming in sortradio of HSP50214B were laid out.
出处
《应用科技》
CAS
2004年第1期7-8,共2页
Applied Science and Technology
