Analyses the theory and structure of the digital frequency convertor, discusses the structure of the digital mixer module and interpolation/decimation filtering module which are the key part of the digital frequency conversion.
2.分析了数字中频主要应用数字变频系统的基本原理与结构,对其关键模块数字混频模块和抽取(内插)滤波模块在FPGA中的实现进行了研究。
参考来源 - 数字中频技术的研究与FPGA实现·2,447,543篇论文数据，部分数据来源于NoteExpress
In this article, according to the application requirements, an effective algorithm for digital frequency conversion is provided.
本文根据数字化干扰的应用需要，提出了一种有效的数字变频算法。
This text starts out the general design form hardware aspect of the digital frequency conversion air-condition's system of indoors and outdoors.
本文从硬件方面着手进行了直流变频空调室内、室外系统的综合设计。
DDS (direct digital synthesis) is a sort of frequency synthesis technique, which has advantages such as short frequency conversion time, high resolution in frequencies, programmability and so on.
直接数字频率合成(DDS)技术是目前广为应用的一项频率合成技术，它具有频率转换时间短、频率分辨率高、可编程等特点。
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