Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Design of Variable Gain Amplifier with a Gain Slope Controller in Multi-standard System

다중 표준 시스템을 위한 이득 곡선 제어기를 가진 가변이득 증폭기 설계

  • 최문호 (충북대학교 반도체공학과) ;
  • 이원영 (충북대학교 반도체공학과) ;
  • 김영석 (충북대학교 반도체공학과)
  • Published : 2008.04.01
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Abstract

In this paper, variable gain amplifier(VGA) with a gain slope controller has been proposed and verified by circuit simulations and measurements. The proposed VGA has a gain control, gain slope switch and variable gain range. The input source coupled pair with diode connected load is used for VGA gain stage. The gain slope controller with switch can control VGA gain slope. The proposed VGA is fabricated in $0.18{\mu}m$ CMOS process for multi -standard wireless receiver. The proposed two stage VGA consumes min. 2.0 mW to max. 2.6 mW in gain control range and gives input IP3 of -3.77 dBm and NF of 28.7 dB at 1.8 V power supply under -25 dBm, 1 MHz input. The proposed VGA has 37 dB(-16 dB $\sim$ 21 dB) variable gain range, and 8 dB gain range control per 0.3 V control voltage, and can provide variable gain, positive and negative gain slope control, and gain range control. This VGA characteristics provide design flexibility in multi-standard wireless receiver.

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References

  1. 박광민, "1.5 V 70 dB 100 MHz CMOS Class-AB 상보형 연산증폭기의 설계", 전기전자재료학회논문지, 15권, 9호, p. 743, 2002
  2. 이광규, 최문호, 현혜린, 김영석, "Design of analog baseband circuitry for DVB-H RF tuner", 제14회 반도체학술대회논문집, p. 959, 2007
  3. L. Leung, "10-MHz 60-dB Dynamic-Range 6-dB Variable Gain Amplifier", Thesis of MS. D., Electrical and Electronic Engineering of Hong Kong University, p. 174, 1996
  4. M. M. Green and S. Joshi, "A 1.5-V CMOS VGA based on pseudo differential structures", in Proc. IEEE ISCAS 2000, Vol. IV, p. 461, 2000
  5. C.-C. Chang, M.-L. Lin, and S.-I. Liu, "CMOS current-mode exponential-control variable-gain amplifier", Electronics Letters, Vol. 37, No. 14, p. 868, 2001 https://doi.org/10.1049/el:20010593
  6. J.-H. Kim, C.-S. Chae, Y.-J. Woo, and G.-H. Cho, "A CMOS variable gain amplifier with wide dynamic range and accurate dB-linear characteristic", in Proc. ICACT 2006, p. 831, 2006
  7. J.-K. Kwon, K.-D. Kim, W.-C. Song, and G.-H. Cho, "Wideband high dynamic range CMOS variable gain amplifier for low voltage and low power wireless applications", Electronics Letters, Vol. 39, No. 10, p. 759, 2003 https://doi.org/10.1049/el:20030516
  8. T. Yamaji, N. Kanou, and T. Itakura, "A temperature-stable CMOS variable-gain amplifier with 80-dB linearity controlled gain range", IEEE J. Solid-State Circuits, Vol. 37, No. 5, p. 553, 2002 https://doi.org/10.1109/4.997847
  9. P.-C. Huang, L.-Y. Chiou, and C.-K. Wang, "A 3.3-V CMOS wideband exponential control variable-gain-amplifier", 1998 IEEE Int. Symp. Circuits and Systems, Vol. 1, p. 285, 1998
  10. 권덕기, 문요섭, 김거성, 박종태, 유종근, "새로 운 가변 Degeneration 저항을 사용한 2.5 V 300 MHz 80 dB CMOS VGA 설계", 대한전자공학회논문지, 40권, SD편, 9호, p. 43, 2003
  11. 차진엽, 여환석, 김도형, 범진욱, "10 ㎒/77 ㏈ 다이내믹 영역을 가진 선형 가변 이득 증폭 기", 대한전자공학회논문지, 44호, SD편, 8호, p. 16, 2007