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Design of High-Order Linear Transformation Active Filters

Design of High-Order Linear Transformation Active Filters. Presenter : 黃育賢 Yuh-Shyan Hwang Department of Electronic Engineering National Taipei University of Technology Date ： 2008/03/26. Outline. 1.Introduction 2.Linear transformation method Voltage-mode Current-mode 3.Examples Gm-C

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Design of High-Order Linear Transformation Active Filters

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  1. Design of High-Order Linear Transformation Active Filters Presenter :黃育賢 Yuh-Shyan Hwang Department of Electronic Engineering National Taipei University of Technology Date：2008/03/26

  2. Outline • 1.Introduction • 2.Linear transformation method • Voltage-mode • Current-mode • 3.Examples • Gm-C • OTRA • CDBA、CDTA • DDCC 、 DCDDCC • 4.Conclusions

  3. 1. Introduction

  4. 1. Introduction • Design of High-order active filters • Cascade topology • Follow-the-leader feedback

  5. 1. Introduction • Leap-Frog • Linear Transformation

  6. 2. Linear transformation methodVoltage-mode

  7. 2.Linear transformation method Voltage-mode Traditional two-port network Voltage-mode two-port network after linear transformation

  8. 2.Linear transformation method Voltage-mode

  9. 2.Linear transformation method Voltage-mode

  10. 2.Linear transformation method Voltage-mode Cross-cascade interconnection

  11. 2.Linear transformation method Voltage-mode

  12. 2.Linear transformation method Voltage-mode

  13. 2. Linear transformation methodCurrent-mode

  14. 2.Linear transformation method Current-mode Traditional two-port network Current-mode two-port network after linear transformation

  15. 2.Linear transformation method Current-mode

  16. 2.Linear transformation method Current-mode

  17. 2.Linear transformation method Current-mode Cross-cascade interconnection

  18. 2.Linear transformation method Current-mode

  19. 2.Linear transformation method Current-mode

  20. 3. ExamplesGm-COTRACDBA、CDTADDCCDCDDCC

  21. 3.ExamplesGm-C

  22. 3.Examples Gm-C Ideal Operational transconductance amplifier (OTA)

  23. 3.Examples Gm-C

  24. 3.Examples Gm-C

  25. 3.Examples Gm-C OTA schematic

  26. 3.Examples Gm-C Bias schematic Bandgapschematic

  27. 3.Examples Gm-C Voltage-mode Single-end output 3-order low-pass filter Voltage-mode Fully differential 3-order low-pass filter

  28. 3.Examples Gm-C (a) resisters；(b) non-resister Voltage-mode 3-order Butterworth Low-pass filter

  29. 3.Examples Gm-C gm1~gm7, gm9 OTA Vo/Vin voltage gain frequency response gm1~gm7, gm9 OTA frequency response Io/Vin

  30. 3.Examples Gm-C gm1~gm7, gm9 OTA Transient response gm8 OTA Voltage gain frequency response

  31. 3.Examples Gm-C gm8 OTA frequency response Io/Vin gm8 OTA Transient response

  32. 3.Examples Gm-C Filter frequency response Gain=-6.8dB，3dB bandwidth=229MHz Filter Transient response

  33. 3.Examples Gm-C Amplifier frequency response Gain=6.73dB，bandwidth=1.27GHz Bandwidth=1.1GMHz，gain=-0.37dB Voltage buffer frequency response

  34. 3.Examples Gm-C Gain=-0.52dB，3dB bandwidth=217MHz power consumption=9.77mW Full filter frequency response Full filter Transient response

  35. 3.Examples Gm-C THD

  36. 3.Examples Gm-C Specification

  37. 3.Examples Gm-C Voltage-mode 3-order Butterworth Low-pass filter layout

  38. 3.Examples Gm-C Current-mode Single-end output 3-order low-pass filter Current-mode Fully differential 3-order low-pass filter

  39. 3.Examples Gm-C Current-mode 3-order Butterworth Low-pass filter Current buffer

  40. 3.Examples Gm-C Bandwidth=8.5GHz gain=6.26dB Current buffer frequency response Gain=-0.157dB，3dB bandwidth=233MHz Power consumption=16.77mW Full filter frequency response

  41. 3.Examples Gm-C Transient response THD

  42. 3.Examples Gm-C Specification

  43. 3.ExamplesOTRA

  44. 3.Examples OTRA OTRA ideal model OTRA symbol & function

  45. 3.Examples OTRA OTRA schematic

  46. 3.Examples OTRA MOFET Resistor Circuit (MRC)

  47. 3.Examples OTRA Input stage

  48. 3.Examples OTRA Middle stage

  49. 3.Examples OTRA Output stage

  50. 3.Examples OTRA

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