基于GC5016的短波收发机数字上下变频设计  

Design of DUC/DDC for HF Transceiver Based on GC5016

作　　者：周玉庭[1] 郭伟[2] 周建英[2] 

机构地区：[1]南京工业大学自动化与电气工程学院,南京210009 [2]中国电子科技集团第三十六研究所,浙江嘉兴314001

出　　处：《电讯技术》2012年第7期1102-1106,共5页Telecommunication Engineering

摘　　要：鉴于传统中频数字化短波收发机性能及复杂度受模拟前端电路制约,介绍了射频直接低通采样的数字化处理方案,其中GC5016用于数字上下变频,重点对GC5016中的级联积分梳状滤波器(CIC)和可编程有限冲激响应滤波器(PFIR)的联合设计进行了仿真研究和硬件验证。该数字上下变频的带外抑制达100 dB,带内平坦度控制在0.1 dB,完全满足射频数字化收发机的设计要求。In view of the analog front circuits＇ restrictions on the performance and complexity of traditional Inter- mediate Frequency（IF） digitalizing transceiver, a Radio Frequency（RF） digitalizing scheme based on low- pass sample theory is introduced, in which Digital Up/Down Convert （DUC/DDC）are performed by GC5016. This paper focuses on the joint design of Cascaded Integrated Comb（CIC） and Programmable Finite Impulse Response （PFIR） filter in GC5016 through simulation research and hardware verification. The out - band rejection of the DUC/DDC is up to 100 dB, and band flatness is limited to 0.1 dB, so, the design fully satisfies the HF transeeiver＇s requirement.

关 键 词：短波收发机 数字上下变频 CIC滤波器 PFIR滤波器 

分 类 号：TN924[电子电信—通信与信息系统]