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引用本文：

田克纯,周武中,覃远年,等.B3G射频接收机前端设计[J].电讯技术，2010，50（11）： - . [点击复制]
TIAN Ke-chun,ZHOU Wu-zhong,QIN Yuan-nian,et al.Design of a Front end for B3G RF Receivers[J].，2010，50（11）： - . [点击复制]

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B3G射频接收机前端设计
田克纯,周武中,覃远年,赵峰
0 字体:加大+\|默认\|缩小-
(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