抗干扰高线性射频前端设计

doi:10.3969/j.issn.1000-565X.2016.01.006

华南理工大学学报（自然科学版） ›› 2016, Vol. 44 ›› Issue (1): 37-43.doi: 10.3969/j.issn.1000-565X.2016.01.006

• 电子、通信与自动控制 • 上一篇下一篇

抗干扰高线性射频前端设计

陈志坚蔡敏

华南理工大学电子与信息学院，广东广州 510640

收稿日期:2015-04-24 修回日期:2015-07-30 出版日期:2016-01-25 发布日期:2015-12-09
通信作者: 陈志坚( 1979-) ，男，博士生，主要从事集成电路设计研究． E-mail:391452@qq.com
作者简介:陈志坚( 1979-) ，男，博士生，主要从事集成电路设计研究．
基金资助:
广东省经济和信息化委员会重大专项( 2011912004) ; 广东省产学研结合项目( 2011A090200106) ; 广东省高新技术产业开发区发展引导专项( 2011B010700065)

Design of Anti-Interference High-Linearity RF Front-End

CHEN Zhi-jian CAI Min

School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2015-04-24 Revised:2015-07-30 Online:2016-01-25 Published:2015-12-09
Contact: 陈志坚( 1979-) ，男，博士生，主要从事集成电路设计研究． E-mail:391452@qq.com
About author:陈志坚( 1979-) ，男，博士生，主要从事集成电路设计研究．
Supported by:
Supported by the Economic and Information Commission Major Program of Guangdong Province( 2011912004) ， the Guangdong Industry-University-Research Collaboration Project( 2011A090200106) and the Hi-Tech Zone Development and Guide Special Project of Guangdong Province( 2011B010700065)

摘要/Abstract

摘要： 为抑制干扰和提高电路的线性，采用0. 13 μm ＲF CMOS 工艺设计了一款无需声表滤波器的射频前端电路系统．该设计采用一种新的带干扰消除环路可变增益低噪声跨
导放大器、25%占空比本振信号的无源混频器和互阻放大器架构来实现抗干扰、低噪声、高线性的射频前端．流片和测试结果表明: 该电路抑制带外强干扰达20 dB 以上，在2. 4 GHz可实现44. 98 dB 增益和2. 03 dB 噪声系数，同时获得－ 7 dBm 的输入三阶互调截点和+ 72 dBm 的输入二阶互调截点，实现了无需声表滤波器和抗干扰特性; 整个射频前端供电电压为1. 2 V，功耗为36mA．

关键词: 声表滤波器, 射频前端, 跨导放大器, 无源混频器, 互阻放大器

Abstract: In order to suppress interferences and improve the linearity of circuits,a SAW-less RF front-end system is designed by using a 0.13 μm RF CMOS process.This design adopts a novel variable-gain low-noise transconductance amplifier with a loop eliminating interferences,a 25% duty-cycle current-commutating passive mixer and a transimpedance amplifier,so as to achieve an RF front-end system of anti-interference,low noise and high linearity.Tapeout and test results show that the designed front-end system accomplishes the goals of 20 dB out-band interference rejection,44.98 dB gain and 2.03 dB noise figure at 2.4GHz with a － 7 dBm 3rd input intermodulation point ( IIP3) and a + 72 dBm 2nd input intermodulation point ( IIP2) being obtained,which means that the designed system needs no surface acoustic wave filter and is of anti-interference characteristic.In addition,the designed system has a power supply voltage of 1.2 V and a power consumption of 36mA.

Key words: surface acoustic wave filters, RF front-end, transconductance amplifier, passive mixer, transimpedance amplifier

中图分类号:

TN929.531

陈志坚蔡敏. 抗干扰高线性射频前端设计[J]. 华南理工大学学报（自然科学版）, 2016, 44(1): 37-43.

CHEN Zhi-jian CAI Min. Design of Anti-Interference High-Linearity RF Front-End[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(1): 37-43.

抗干扰高线性射频前端设计

Design of Anti-Interference High-Linearity RF Front-End

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