数字上变频技术  

Digital Upward Frequency Conversion Technology

作　　者：魏锋[1] 

机构地区：[1]广东金融学院,广州510000

出　　处：《长春理工大学学报（自然科学版）》2006年第1期63-66,共4页Journal of Changchun University of Science and Technology(Natural Science Edition)

摘　　要：基于近年来数字频率合成技术的发展和大量数字中频产品的出现,本文提出了一种利用数字上变频技术进行基带信号的数字域调制和频率变换的方法。本设计选用AD I公司的四信道发射信号处理器AD 6623作为上变频芯片,并介绍了它的主要组成单元、工作原理,给出了主要技术参数的设置方法,最终产生符合要求的多载波宽带信号。The technology of direct digital frequency synthesis has been most developed in the recent years. At the same time, the digital intermediate frequency signal processors are also presented. In this paper, a solution based on digital upward frequency conversion is proposed, which implements the conversion of a complex digital baseband signal to a real passband signal. In this design, we select AD6623 from ADI company as the digital up converter, and the principle, main departments , as well as the method for setting main parameters are also introduced. As a result, the multicarrier and muhistandard digital signals are achieved.

关 键 词：数字上变频 直接数字频率合成 发射信号处理器 AD6623 

分 类 号：TN919.3[电子电信—通信与信息系统]