CMOS Automatic Gain Control Circuit with DC Offset Cancellation for FM/cw Ladar
This paper presented an automatic gain control （AGC） circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier （VGA） chain with a novel DC offset canceller circuit, which contained an improved Gilbert cell and a Gm-C feedback loop. To keep the VGA wit...
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| Published in | Transactions of Tianjin University Vol. 20; no. 4; pp. 310 - 314 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Heidelberg
Tianjin University
01.08.2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1006-4982 1995-8196 |
| DOI | 10.1007/s12209-014-2084-2 |
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| Abstract | This paper presented an automatic gain control （AGC） circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier （VGA） chain with a novel DC offset canceller circuit, which contained an improved Gilbert cell and a Gm-C feedback loop. To keep the VGA with a linearity in dB characteristic, an improved exponential gain control circuit was introduced. The AGC was implemented in 0.18 gm standard CMOS process. Simulation and measurement results verified that its gain ranged from -20 dB to 30 dB, and band- width ranged from 100 kHz to 10 MHz. Its power consumption was 19.8 mW under a voltage supply of 3.3 V. |
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| AbstractList | This paper presented an automatic gain control (AGC) circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier (VGA) chain with a novel DC offset canceller circuit, which contained an improved Gilbert cell and a Gm-C feedback loop. To keep the VGA with a linearity in dB charac-teristic, an improved exponential gain control circuit was introduced. The AGC was implemented in 0.18mm standard CMOS process. Simulation and measurement results verified that its gain ranged from-20 dB to 30 dB, and band-width ranged from 100 kHz to 10 MHz. Its power consumption was 19.8 mW under a voltage supply of 3.3 V. This paper presented an automatic gain control (AGC) circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier (VGA) chain with a novel DC offset canceller circuit, which contained an improved Gilbert cell and a Gm-C feedback loop. To keep the VGA with a linearity in dB characteristic, an improved exponential gain control circuit was introduced. The AGC was implemented in 0.18 μm standard CMOS process. Simulation and measurement results verified that its gain ranged from −20 dB to 30 dB, and bandwidth ranged from 100 kHz to 10 MHz. Its power consumption was 19.8 mW under a voltage supply of 3.3 V. This paper presented an automatic gain control （AGC） circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier （VGA） chain with a novel DC offset canceller circuit, which contained an improved Gilbert cell and a Gm-C feedback loop. To keep the VGA with a linearity in dB characteristic, an improved exponential gain control circuit was introduced. The AGC was implemented in 0.18 gm standard CMOS process. Simulation and measurement results verified that its gain ranged from -20 dB to 30 dB, and band- width ranged from 100 kHz to 10 MHz. Its power consumption was 19.8 mW under a voltage supply of 3.3 V. |
| Author | 赵毅强 徐敏 庞瑞龙 于海霞 赵宏亮 |
| AuthorAffiliation | School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China College of Physics, Liaoning University, Shenyang 110036, China |
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| Cites_doi | 10.1109/MCD.2006.307270 10.1109/TMTT.2007.896787 10.1109/JSSC.1987.1052733 10.1109/TCSI.2008.2010592 10.1109/JSSC.2006.881548 10.1109/82.392312 10.1109/ICSICT.2006.306420 10.1109/ISSSE.2010.5606939 10.1109/TCSII.2007.911810 10.1109/ISCAS.2008.4541715 |
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| Copyright | Tianjin University and Springer-Verlag Berlin Heidelberg 2014 Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| Keywords | automatic gain control (AGC) variable gain amplifier (VGA) exponential gain control DC offset canceller (DCOC) exponen-tial gain control |
| Language | English |
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| Notes | Zhao Yiqiang, Xu Min, Pang Ruilong , Yu Haixia, Zhao Hongliang （1. School of Electronic Information Engineering, Tianjin University, Tianjin 300072, China; 2. College of Physics, Liaoning University, Shenyang 110036, China） 12-1248/T This paper presented an automatic gain control （AGC） circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier （VGA） chain with a novel DC offset canceller circuit, which contained an improved Gilbert cell and a Gm-C feedback loop. To keep the VGA with a linearity in dB characteristic, an improved exponential gain control circuit was introduced. The AGC was implemented in 0.18 gm standard CMOS process. Simulation and measurement results verified that its gain ranged from -20 dB to 30 dB, and band- width ranged from 100 kHz to 10 MHz. Its power consumption was 19.8 mW under a voltage supply of 3.3 V. automatic gain control （AGC） ; variable gain amplifier （VGA） ; DC offset canceller （DCOC） ; exponential gain control |
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| References | CR2 Kalenteridis, Siskos, Vlassis (CR1) 2012 CR3 Park, Wilson, Ismail (CR5) 2006; 22 Saito, Hosoda, Hyogo (CR13) 2003 CR6 Bozomitu, Cehan (CR7) 2007 Harjani (CR4) 1995; 42 Jeon, Fox, Myers (CR14) 2006; 41 Dong, Ai, Cheol (CR8) 2007; 55 Zheng, Yan, Xu (CR9) 2009; 56 Cheng, Huang, Wu (CR10) 2009 Bult, Wallinga (CR11) 1987; 22 Kim, Chae, Woo (CR12) 2006 Wang, Liu (CR15) 2008; 55 V Kalenteridis (2084_CR1) 2012 2084_CR2 2084_CR3 R G Bozomitu (2084_CR7) 2007 Y Zheng (2084_CR9) 2009; 56 R Saito (2084_CR13) 2003 L H Dong (2084_CR8) 2007; 55 O Jeon (2084_CR14) 2006; 41 S B Park (2084_CR5) 2006; 22 R Harjani (2084_CR4) 1995; 42 I-H Wang (2084_CR15) 2008; 55 2084_CR6 K Bult (2084_CR11) 1987; 22 J-H Kim (2084_CR12) 2006 J Cheng (2084_CR10) 2009 |
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| Snippet | This paper presented an automatic gain control （AGC） circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain... This paper presented an automatic gain control (AGC) circuit suitable for FM/cw ladar. The proposed architecture was based on two-stage variable gain amplifier... |
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| SubjectTerms | CMOS工艺 Engineering Gilbert单元 Humanities and Social Sciences Mechanical Engineering multidisciplinary Science 可变增益放大器 激光雷达 直流偏移 自动增益控制电路 |
| Title | CMOS Automatic Gain Control Circuit with DC Offset Cancellation for FM/cw Ladar |
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