Automated Electronic Filter Design (eBook)

Amal Banerjee is an Engineering manager at Analog Electronics in Kolkata, India.

Contents 8
Chapter 1: Introduction and Problem Statement 10
References 12
Chapter 2: Automated Electronic Filter Design Scheme 13
2.1 The Framework 13
2.2 Normalized Butterworth Filter 15
2.3 Practical Normalized Low Pass Butterworth Filter 18
2.4 Normalized Chebyshev Low Pass Filter 19
2.5 Normalized Inverse Chebyshev Filter 22
2.6 Normalized Bessel Filter 22
2.7 Denormalizing Prototype Filters to Real-World Filters 24
2.7.1 Frequency Scaling 24
2.7.2 Impedance Scaling 25
2.8 Filter Transformations 26
2.8.1 Low Pass to High Pass Filter 26
2.8.2 Low Pass Filter to Band Pass Filter 26
2.9 Automated Filter Design Scheme 27
2.10 Low Pass to Band Pass Filter Conversion Example 29
References 33
Chapter 3: Automated Electronic Filter Design Algorithm/Scheme Implementation and Design Examples 34
3.1 Introduction 34
3.2 Automated Electronic Filter Design Scheme 35
3.3 Designing Filters with New Scheme 43
3.4 Seventh-Order Low Pass Butterworth Filter: Simplified Scheme Implementation 44
3.5 Seventh-Order Low Pass Chebyshev Filter: Simplified Scheme Implementation 46
3.6 Eighth-Order High Pass Bessel Filter: Simplified Scheme Implementation 49
3.7 Eighth-Order Band Pass Chebyshev Filter: Simplified Scheme Implementation 53
3.8 Designing Filters with New Scheme: Full-Blown Implementation 56
3.9 Butterworth Low Pass Filter: Calculated Order 10 and Cutoff Frequency 22.7 MHz 57
3.10 Chebyshev High Pass Filter: Calculated Order 3 Cutoff Frequency 21MHz Pass Band Ripple 0.45dB 59
3.11 Chebyshev Band Pass Filter: Series Connection of High Pass and Low Pass Filters 63
3.12 Effect of Non-ideal Reactive Elements on Filter Behavior and Performance and Design Space Exploration 65
3.13 SPICE: Electronic Circuit Performance Evaluation Gold Standard 71
References 71
Chapter 4: Higher Frequencies (100´s of MHz to 10´s of GHz): Physical Constraints and Distributed Filters 73
4.1 Terminology 73
4.2 High-Frequency Issues with Discrete Element Electronic Filter Fabrication and Transmission Line Fundamentals 76
4.2.1 Lossless Transmission Lines 78
4.2.2 Lossless Terminated Transmission Line 79
4.2.3 Stub Synthesis: Key Equations 80
4.3 Richard´s Transformation and Kuroda´s Identities 81
4.4 Distributed Electronic Filter Design Scheme 82
4.5 Transmission Line Losses 83
4.6 Distributed Electronic Filter Design Example Stepped Impedance Low Pass Filter 84
References 87
Chapter 5: Summary and Conclusion 89
Appendix A: Using the Automated Filter Design Tool 93