一种混合式高动态范围自动增益控制电路
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摘要
本文基于接收机应用提出了一种混合式高动态范围自动增益电路。该电路由射频前馈与中频反馈两部分组成,分别负责增益的离散粗调与连续精调。以射频开关,数控衰减器,检波器,可变增益放大器,数模转换器,模数转换器与现场可编程门阵列为核心器件实现了一种输入动态范围110 d B,灵敏度-100 d Bm,输出功率为-19 d Bm的自动增益控制电路。
A hybrid high-dynamic-range Automatic Gain Control(AGC)circuit for receiver applications is proposed in this paper. The circuit consists of radio-frequency(RF) feedfor-ward part and intermediate-frequency(IF)feed-backward part. The former one is used for discrete-coarse control while the latter one is used for continuous-precise control. An AGC circuit is implemented by using RF swich,digital attenuator,power detector,Variable Gain Amplifier(VGA),DAC,ADC and FPGA,which displays a 110 d B input dynamic range,-100 d Bm sensitivity with-19 d Bm output power.
A hybrid high-dynamic-range Automatic Gain Control(AGC)circuit for receiver applications is proposed in this paper. The circuit consists of radio-frequency(RF) feedfor-ward part and intermediate-frequency(IF)feed-backward part. The former one is used for discrete-coarse control while the latter one is used for continuous-precise control. An AGC circuit is implemented by using RF swich,digital attenuator,power detector,Variable Gain Amplifier(VGA),DAC,ADC and FPGA,which displays a 110 d B input dynamic range,-100 d Bm sensitivity with-19 d Bm output power.
引文
[1]Xia G,Zhang Q,Yang Z.Design and implementa-tion of an efficient and large dynamic range hybriddigital AGC for burst communication systems[C]//2012 IEEE 11th International Conference on Sig-nal Processing,2012:1373-1377.
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[8]李飚,刘春群,黄忠快.基于FPGA射频接收机前端AGC系统电路的设计[J].无线电通信技术,2016(3):82-84.
[9]郑隆浩,彭艳云.基于FPGA的中频AGC电路设计[J].电子设计工程,2014(14):113-116.
[10]Bing Jing,Yuankun Xue,Fan Ye,et al.Automatic gain control algorithm with high-speed and double closed-loop in UWB system[C]//2013IEEE 10th International Conference on ASIC,2013:1-4.
[11]耿云辉,冯西安,张路,等.一种大动态范围AGC电路的设计与实现[J].微处理机,2012(3):20-23,28.
[12]Ray S.Hella M.M.A 10 Gb/s inductorless AGCamplifier with 40 d B linear variable gain control in0.13 um CMOS[J].IEEE Journal of Solid-StateCircuits,2016,51(2):440-456.
[13]Tisserand E,Berviller Y.Design andimplementation of a new digital automatic gaincontrol[J].Electronics Letters,2016,52(22):1847-1849.
[14]罗有亮,魏连,魁刘杰.基于VCA810的大动态范围AGC电路设计[J].电子设计工程,2016(4):105-107,110.
[15]李怀良,庹先国,朱丽丽,等.中低频宽动态范围AGC放大器设计[J].电测与仪表,2013(2):96-99.
[16]贺欣.宽带大动态AGC电路设计[J].电子设计工程,2012(8):167-170.
[2]Fujii M,Kawaguchi N,Nakamura M,et al.Feedforward and feedback AGC for fast fadingchannels[J].Electronics Letters,1995,31(13):1029-1030.
[3]Sobaihi K,Hammoudeh A.Scammell D.AutomaticGain Control on FPGA for Software-Defined Radios[C]//Wireless Telecommunications Symposium2012:1-4.
[4]沈同平,谷宗运,方芳,等.反馈式数字AGC的FPGA优化实现[J].安庆师范学院学报:自然科学版,2015(3):68-70.
[5]马战刚,张宇平,孙弋,等.大动态范围AGC电路在接收机中的应用[J].半导体技术,2010(2):191-193.
[6]朱会柱,袁斌,张志刚.90d B大动态范围可调AGC系统设计[C]//中国电子学会.2009年全国微波毫米波会议论文集(下册),2009:3-3.
[7]陈立泽,陈星,王超.宽带大动态中频AGC系统实现[J].电子测量技术,2010(11):46-48,73.
[8]李飚,刘春群,黄忠快.基于FPGA射频接收机前端AGC系统电路的设计[J].无线电通信技术,2016(3):82-84.
[9]郑隆浩,彭艳云.基于FPGA的中频AGC电路设计[J].电子设计工程,2014(14):113-116.
[10]Bing Jing,Yuankun Xue,Fan Ye,et al.Automatic gain control algorithm with high-speed and double closed-loop in UWB system[C]//2013IEEE 10th International Conference on ASIC,2013:1-4.
[11]耿云辉,冯西安,张路,等.一种大动态范围AGC电路的设计与实现[J].微处理机,2012(3):20-23,28.
[12]Ray S.Hella M.M.A 10 Gb/s inductorless AGCamplifier with 40 d B linear variable gain control in0.13 um CMOS[J].IEEE Journal of Solid-StateCircuits,2016,51(2):440-456.
[13]Tisserand E,Berviller Y.Design andimplementation of a new digital automatic gaincontrol[J].Electronics Letters,2016,52(22):1847-1849.
[14]罗有亮,魏连,魁刘杰.基于VCA810的大动态范围AGC电路设计[J].电子设计工程,2016(4):105-107,110.
[15]李怀良,庹先国,朱丽丽,等.中低频宽动态范围AGC放大器设计[J].电测与仪表,2013(2):96-99.
[16]贺欣.宽带大动态AGC电路设计[J].电子设计工程,2012(8):167-170.