【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。更多还原

【Abstract】 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.更多还原