基于商业零中频芯片的BPSK/QPSK解调器设计  

Design of BPSK/QPSK Demodulator Based on Direct-conversion Zero-IF RF Integrated Chip

作　　者：邓元策 陈巧艳[2] 马路[1,2] 石立国[1,2] 王竹刚[2] 

机构地区：[1]中国科学院大学,北京100190 [2]中国科学院空间科学与应用研究中心,北京100190

出　　处：《电视技术》2015年第1期54-59,共6页Video Engineering

摘　　要：提出基于商业零中频芯片MAX2837的BPSK/QPSK解调器设计,详细分析了零中频芯片MAX2837的特性、AGC环路、载波同步及位同步环路的设计。工程实测结果表明:该系统在误比特率为10-5时,解调损耗约2.5 d B,完成系统设计要求;该系统集成度高、体积小、重量轻、成本低。The design of BPSK/QPSK demodulator is investigated in this paper based on direct conversion zero intermediate frequency （zero-IF） RF integrated chip MAX2837. The characteristics of zero-IF RF integrated chip MAX2837 are introduced in subsection II. The design of automatic gain control loop, carrier recovery loop and timing recovery loop is analyzed in detail. The measurement result shows： the gap between the measured bit error probability and theoretical value is about 2.5 dB when the measured bit error probability is 10^-5 ; the designed demodulator has many advantages, such as high integration level, small size and high quality with low price.

关 键 词：零中频 MAX2837 BPSK/QPSK解调器 

分 类 号：TN712.2[电子电信—电路与系统]