In this chapter, you will learn about various kinds of low-pass filters, such as Butterworth filters and maximally flat envelope delay (MFED) filters. You will see the small-signal bandwidth these filters exhibit as well as how they respond to step response. You will learn that all high-frequency circuits are eventually limited in their bandwidth because of output resistance driving an input capacitance. And then you will observe that it is possible to increase bandwidth by the judicious use of inductance added in the right place. You will find that it is possible to obtain as much as 2.72 times the bandwidth of a simple RC (resistance/capacitance) low-pass filter while maintaining good transient response. These techniques are referred to as 'peaking' networks.

Chapter Contents:

• 1.1 Introduction
• 1.2 RC Low-Pass Filter
• 1.3 Transient Analysis
• 1.4 Second-Order Systems - an RLC Low-Pass Filter
• 1.5 Cascaded Filters
• 1.6 Additional Peaking Techniques
• 1.7 Nonsymmetric T-Coils
• 1.8 Other Uses of T-Coils
• 1.9 Physical Implementation of a T-Coil
• 1.10 Peaking Technique Summary
• 1.11 Chapter Summary
• References

Inspec keywords: low-pass filters; transient response; Butterworth filters; circuit theory; delay filters

Other keywords: high-frequency circuits; simple RC low-pass filter; input capacitance; peaking networks; transient response; basic network theory; output resistance; small-signal bandwidth; Butterworth filters; maximally flat envelope delay filters; inductance

Subjects: General circuit analysis and synthesis methods; Filters and other networks