quotation:[Copy]
[Copy]
【Print page】 【Download 【PDF Full text】 View/Add CommentDownload reader Close

←Previous page|Page Next →

Back Issue    Advanced search

This Paper:Browse 3653   Download 2701  
B3G射频接收机前端设计
田克纯,周武中,覃远年,赵峰
0
(桂林电子科技大学 信息与通信学院,广西 桂林 541004)
摘要:
分析了DC-OFDM零中频接收方案,采用两个相邻子载波以分路/合路的方式进行信号处理以降 低硬件难度和复杂度。利用ADS软件设计了B3G射频接收机,其低噪声放大器的最低噪声系数 为1.7 dB,三阶交调点为-1 dBm;下变频器在频带范围内其增益为12.5 dB, 1 dB压缩点-12 dBm,三阶交调点-3 dBm。实验 测试结果表明,所设计的前端满足接收机的指标要求,适合于宽带通信系统。
关键词:  B3G  宽带通信系统;零中频接收机  前端;子载波  移相器
DOI:
基金项目:国家自然科学基金资助项目(60872022)
Design of a Front end for B3G RF Receivers
TIAN Ke-chun,ZHOU Wu-zhong,QIN Yuan-nian,ZHAO Feng
(Information and Communication Institute,Guilin University of Electronic Techn ology,Guilin 541004,China)
Abstract:
DCOFDM zeroIF receiver scheme is studied in this paper.Two adjacent subcarriers in splitter/com biner manner for signal processing are adopted to reduce the difficulty and comp lexity of th e hardware. B3G RF receiver is designed through ADS software and the minimum noi se figure of lownoise amplifier(LNA) is 1.7 dB, and the thirdorder intermodulation point is -1 dBm,the gain of down converter within range of the frequency band is  12.5 dB,1dB compression point is -12 dBm, and the thirdorder interm odulation point is -3 dBm.Experimental test resul ts illustrate that the designed front-end meets the demands of the receiver and is suitable for broadband communication systems .
Key words:  B3G  broadband communication system  zero IF receiver  front-end  sub carrier  phas e shifter