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A 4TH ORDER FULLY INTEGRATED ACTIVE RC COMPLEX FILTER WITH NOVEL AUTOMATIC TUNING SYSTEMS 被引量：1

A 4TH ORDER FULLY INTEGRATED ACTIVE RC COMPLEX FILTER WITH NOVEL AUTOMATIC TUNING SYSTEMS
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摘要 This letter introduces a 4th order active RC complex filter with 1.5MHz center frequency and 1MHz bandwidth. The total harmonic distortion of the filter is less than –60dB and the image rejection ratio is greater than 60dB. A novel technique is also proposed in this letter to automatically adjust the variation of the time constant. The advantages of the proposed method are its high precision and simplicity. Using 5bits control words, the tuning error is less than ±1.6%. This letter introduces a 4th order active RC complex filter with 1.SMHz center frequency and 1MHz bandwidth. The total harmonic distortion of the filter is less than -60dB and the image rejection ratio is greater than 60dB. A novel technique is also proposed in this letter to automatically adjust the variation of the time constant. The advantages of the proposed method are its high precision and simplicity. Using 5bits control words, the tuning error is less than ±1.6%.
作者 Chen Dianyu Qi Feitao Sun Weiming Qin Shicai Xiong Shaozhen
机构地区 Institute of P-hotoelectronics
出处 《Journal of Electronics(China)》 2007年第6期854-858,共5页 电子科学学刊（英文版）
基金 Supported by the Key Project of the National Natural Science Foundation of China (No.60437030) the Tianjin Natural Science Foundation (No.05YFJMJC01400).
关键词 自动旋转系统 计算机技术 设计方案 网络技术 Active RC filter Complex filter Automatic tuning system
分类号 TP3 [自动化与计算机技术—计算机科学与技术]
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参考文献10

  • 1Satoshi Sakurai,Mohammed Ismail,Jean-Yves Mi- chel,Edgar Sanchez-sinencio,and Robert Brannen.A MOSFET-C variable equalizer circuit with simple on-chip automatic tuning[].IEEE J Solid-State Cir- cuits.1992
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  • 6Jose Silva-Martinez,Michel S. J. Steyaert,and Willy Sansen.A 10.7MHz 68dB SNR CMOS continu- ous-time filter with on-chip automatic tuning[].IEEE J Solid-State Circuits.1992
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同被引文献13

  • 1Pu Y G, Jung S K, Park D J, et al. A CMOS baseband complex bandpass filter with a new automatic tuning method for PHS applications[C]//33rd European Solid State Circuits Conference. Munich: IEEE Press, 2007:500-503.
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  • 4Kagoshima K, Kawama S, Toyoyama S, et al. Fast automatic tuning of channel selection filters based on phase delay calibration[C]//IEEE Custom Integrated Circuits Conference. Oakland: IEEE Press, 2006: 837-840.
  • 5Oskooei M S, Masourmi N, Kamarei M. A high-frequency very low-power low-pass filter with a wide bandwidth and gain tuning range[C]// 50th Midwest Symposium on Circuits and Systems. Montreal: IEEE Press, 2007: 514-517.
  • 6Kondo H, Sawada M, Murakami N, et al. Complex BPF for low-IF receivers with an automatic digital tuning circuit[C]//International Workshop on Radio- Frequency Integration Technology. Singapore: IEEE Press, 2007. 74-77.
  • 7Du D K, Li Y M, Wang Z H. An active-RC complex filter with mixed signal tuning system for low-IF receiver[C]//IEEE Asia Pacific Conference on Circuits and Systmes. [s. n. ], 2006. 1 031-1 034.
  • 8Durham A M, Huges J B, White W R. Circuit architecture for high linearity monolithic continuous-time filtering[C]//Transactions on Circuits System Ⅱ Analog and Digital Signal Processing. Passaic: Piscataway Press, 1992. 1 270-1 276.
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  • 10Xia B, Yan S, Sdnchez-Sinencio E. An RC time constant auto-tuning structure for high linearity continuous-time ∑Δ modulators and active filters [C]//Transactions on Circuits and Systems Ⅰ Regular Papers. Cliflom: IEEE Press, 2004: 2 179- 2 188.

引证文献1

Journal of Electronics(China)
2007年 第6期

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