Design of a Butterworth filter
Abstract
The propagation function of a Butterworth filter is presented, and low-pass analog filters of the Butterworth type are characterized. The calculation of angular frequencies and the capacitances of low-pass filters of the second to fourth order is explained. The calculations facilitate the design of a Butterworth filter. Examples of calculations are supplied. Digital filters are also described.
- Publication:
-
Nachrichten Elektronik
- Pub Date:
- November 1977
- Bibcode:
- 1977NacEl..31..329K
- Keywords:
-
- Digital Filters;
- Electric Filters;
- Low Pass Filters;
- Network Synthesis;
- Amplifiers;
- Angular Velocity;
- Capacitance;
- Computation;
- Design;
- High Pass Filters;
- Propagation;
- Rc Circuits;
- Time Lag;
- Transfer Functions;
- Electronics and Electrical Engineering