基于零中频结构的数字电视调制系统研究  

Research and Realization for Digital Television Modulation System Based on ZIF

作　　者：杨霏[1] 杨刚[1] 

机构地区：[1]中国传媒大学信息工程学院,北京100024

出　　处：《电视技术》2011年第12期25-27,共3页Video Engineering

摘　　要：介绍了基于零中频结构的数字电视调制系统的特点、特性、硬件设计和调试方法。重点分析并仿真了零中频结构中,相位误差和幅度不平衡对射频镜像抑制和调制误差的影响,并给出了如何设计和校正零中频结构数字电视调制系统。In This paper, the ZIF structure of digital television modulation system, performance, and hardware design are presented. It focuses on the relationship among phase imbalance, amplitude mismatch and RF performance, such as sideband suppression and modulation error. These theoretical analysis and stimulated performance have more instructional function on hardware design and debug for digital television modulation system based on ZIF structure.

关 键 词：零中频 调制误差率 镜像抑制 本振泄漏 

分 类 号：TN949.197[电子电信—信号与信息处理]