高速数模转换芯片AD9122在数字中频发射机中的应用

Application of High Speed Digital to Analog Converter AD9122 in Digital IF Transmitter

根据高速模数调制芯片AD9122的工作原理及使用方法,结合通信领域最新技术对信号宽带、信号高采样速率等指标需求,探讨了其在数字中频发射机中的合理应用模式;以数字中频发射机为应用实例,进行AD9122典型应用的实际测量与过程分析,并提出系统设计方案。经实验证明,此数字中频发射机设计方案带来了性能提升,对高速数字调制工作具有较高的实用性和参考价值。

According to the working principle and using method of the high-speed analog-digital modulation chip AD9122, combined with the requirements of the latest technologies in the field of communication, such as wide-band signals and high signal sampling rate, the reasonable application mode in the digital intermediate frequency transmitter is discussed. The transmitter is an application example.The actual measurement and process analysis of the typical application of the AD9122 is performed, and a system design scheme is proposed. The experiment proves that this digital IF transmitter design scheme brings about performance enhancement and has high practicality and reference value for high-speed digital modulation work.