COURSE SUMMARY
Course Title: 
Active Filter Design
Course Code: 
15ECE320
Year Taught: 
2015
Type: 
Elective
Degree: 
Undergraduate (UG)
School: 
School of Engineering
Campus: 
Bengaluru
Chennai
Coimbatore
Amritapuri

'Active Filter Design' is an elective course offered for the B. Tech. (Bachelor of Technology) in Electronics and Communication Engineering at School of Engineering, Amrita Vishwa Vidyapeetham.

Unit 1

Introduction to Active Filtering - Categories of Filters - LP, HP, BP, BE and All Pass Filters - Second Order s-domain equations in each case and their pole-zero plots. Filter approximations – Butterworth, Chebyshev, Elliptic and Bessel - Phase and group delay characteristics of approximation functions - Delay equaliser functions - Frequency transformations.

Unit 2

Review of opamp characteristics: Single opampbiquads - First order LP, HP, BP, All pass filters - Biquad topologies - Analysis and design of single opamp Biquads with finite gain. Analysis and design of LP, HP and BP filter with second order response. Use of bridged T network in active Filters - Sensitivity analysis of single opamp filters.

Unit 3

Multiple opamp Filters: KHN (Universal Active Filter) filter, Tom-Thomas biquad - Analysis and design for various categories of filters - Q enhancement and pole frequency error problem - Elementary ideas of compensation.

TEXTBOOKS

  1. R Schaumann and M E Van Valkenburg, “Design of analog filters”, First Edition, Oxford University Press, 2005.

REFERENCES

  1. G Daryanani, “Principles of active network synthesis and design”, New York, Wiley, 1976.
  2. M Van Valkenburg, “Analog filter design”, New York, Holt Rinehart and Winston, 1982.
  3. Franco S., “Design with operational amplifiers and analog integrated circuits”, 3rd ed. New York, McGraw-Hill, 2002.
  4. Allan Waters, “Active filter design”, New York, McGraw-Hill, 1991.