[1]孙俊峰,李智群,章丽,等.一种Gm-C复数带通滤波器调谐电路的设计[J].东南大学学报(自然科学版),2011,41(4):682-686.[doi:10.3969/j.issn.1001-0505.2011.04.005]
 Sun Junfeng,Li Zhiqun,Zhang Li,et al.Design of tuning circuit for a Gm-C complex band-pass filter[J].Journal of Southeast University (Natural Science Edition),2011,41(4):682-686.[doi:10.3969/j.issn.1001-0505.2011.04.005]
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一种Gm-C复数带通滤波器调谐电路的设计()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第4期
页码:
682-686
栏目:
电路与系统
出版日期:
2011-07-20

文章信息/Info

Title:
Design of tuning circuit for a Gm-C complex band-pass filter
作者:
孙俊峰123李智群12章丽1李伟1
(1东南大学射频与光电集成电路研究所,南京 210096)
(2东南大学集成电路学院,南京 210096)
(3南京电子器件研究所,南京 210016)
Author(s):
Sun Junfeng123Li Zhiqun12Zhang Li1Li Wei1
(1Institute of RF-and OE-ICs, Southeast University, Nanjing 210096, China)
(2College of Integrated Circuits, Southeast University, Nanjing 210096, China)
(3Nanjing Electronic Devices Institute, Nanjing 210016, China)
关键词:
Nauta跨导Gm-C滤波器线性度频率和Q值调谐
Keywords:
Nauta’s transconductor Gm-C filter linearity tuning of frequency and Q factor
分类号:
TN432
DOI:
10.3969/j.issn.1001-0505.2011.04.005
摘要:
采用TSMC 0.18μm RF CMOS工艺,设计了一种Nauta跨导的Gm_C复数带通滤波器调谐电路,可实现滤波器的频率和Q值同时调谐.该调谐电路的频率调谐环路使用数字鉴频器和改进结构的数模转换器,Q值调谐电路采用能够在高输出电压下准确镜像电流的电流镜,整个调谐电路具备有利于改善滤波器线性度的高调谐电压输出能力.测试结果表明,1.8 V电源电压下,调谐电路输出的调谐电压最高可达到1.71 V.调谐后滤波器的中心频率和带宽偏差降到小于3%.
Abstract:
A tuning circuit is designed and implemented on 0. 18 μm RF CMOS process. It can simultaneously tune center frequency and Q factor of a Gm-C complex band-pass filter built with Nauta’s transconductor. The digital frequency detector and the improved frame’s DAC are applied in the frequency tuning loop of the tuning circuit, and the current mirror which can mirror accurately current under the condition of high output voltage is adopted in the Q tuning circuit. Thus the tuning circuit has capability of supplying the high tuning voltage, which is helpful for improving the filter’s linearity. Test results show that output tuning voltage of the tuning circuit can be up to 1. 71 V at 1. 8 V supply voltage. After the filter is tuned, the error of its center frequency and bandwidth is decreased to less than 3%.

参考文献/References:

[1] Wei Baolin,Dai Yujie,Zhang Xiaoxing,et al.A 2.4-GHz low-if front-end receiver in 0.18-μm CMOS for IEEE 802.15.4 WPAN Applications [C]//IEEE 8th International Conference on ASIC. Changsha,China,2009:1137-1140.
[2] Cheng Kuang-Wei,Natarajan K,Allstot D.A 7.2 mW quadrature GPS receiver in 0.13 μm CMOS[C]//IEEE International Solid-State Circuits Conference.San Francisco,USA,2009:422-423,423.
[3] Mostafanezhad I,Boric-Lubecke O,Lubecke V.A coherent low IF receiver architecture for doppler radar motion detector used in life signs monitoring[C]//IEEE Radio and Wireless Symposium.New Orleans,USA,2010:571-574.
[4] Khumsat P,Worapishet A.5th-order chebyshev active-RC complex filter employing current amplifiers [C]//International Symposium on Integrated Circuits.Singapore,2007:281-284.
[5] Pu Young Gun,Jung Sung Kyu,Park DoJin.A CMOS baseband complex bandpass filter with a new automatic tuning method for PHS applications[C]//The 33rd European Solid-State Circuits Conference.Munich,Germany,2007:500-503.
[6] Oskooei M S,Masoumi N,Kamarei M.A 4.35-mW+22-dBm IIP3 continuously tunable channel select filter for WLAN/WiMax receivers in 90-nm CMOS[C]//IEEE Radio Frequency Integrated Circuits Symposium.Anaheim,USA,2010:517-520.
[7] Hu Jin,Hei Huage,Liu Qingbo,et al.CMOS 4th-order gm-c low-pass filter with wide tuning range in high frequency[C]//IEEE 8th International Conference on ASIC.Changsha,China,2009:277-279.
[8] Crombez P,Craninckx J,Steyaert M.A 100 kHz — 20 MHz reconfigurable nauta Gm-C biquad low-pass filter in 0.13μm CMOS[C]//IEEE Asian Solid-State Circuits Conference.Cheju Island,South Korea,2007:444-447.
[9] Fan Jinhan,Li Wei,Li Ning,et al.A 260 MHz 5th-order gm-c biquad low-pass filter with wide frequency tuning range[C]//The 9th International Conference on Solid-State and Integrated-Circuit Technology.Beijing,China,2008:1617-1620.
[10] Nauta Bram.Analog CMOS filters for very high frequencies[M].Norwell,USA:Kluwer Academic Publishers,1993:85-160.
[11] Nauta Bram.A CMOS transconductance-c filter technique for very high frequencies[J].IEEE Journal of Solid-State Circuits,1992,27 (2):142-153.
[12] Emira A A,Sanchez-Sinencio E.A pseudo differential complex filter for bluetooth with frequency tuning[J].IEEE Transactions on Circuits and Systems Ⅱ:Analog and Digital Signal Processing,2003,50 (10):742-754.
[13] 应建华,郑强.一种改进的电压按比例缩放式数模转换器的架构[J].计算机与数字工程,2007,35(10):134-135.
  Ying Jianhua,Zheng Qiang.A new framework of voltage scaling DAC[J].Computer and Digital Engineering,2007,35 (10):134-135.(in Chinese)

备注/Memo

备注/Memo:
作者简介:孙俊峰(1976—),男,硕士生;李智群(联系人),男,博士,教授,博士生导师,zhiqunli@seu.edu.cn.
基金项目:国家高技术研究发展计划(863计划)资助项目(2007AA01Z2A7).
引文格式: 孙俊峰,李智群,章丽,等.一种Gm-C复数带通滤波器调谐电路的设计[J].东南大学学报:自然科学版,2011,41(4):682-686.[doi:10.3969/j.issn.1001-0505.2011.04.005]
更新日期/Last Update: 2011-07-20