1. Todays Agenda 1. Filter Transfer function Orders of filter
Zeroes and Poles
Different Sketch
Examples
2. Butterworth Filter
Magnitude response of Butterworth filter
Magnitude response for various order
Graphical construction for determining poles

2. Next Lecture

3. Orders of filter
The filter transfer function T(s) can b e written as the ratio of two polynomials as
The polynomials in the numerator and denominator can b e factored, and T(s) can be expressed in the form

4. Zeroes and Poles

5. Zeroes and Poles

6. Orders of filter

7. Butterworth Filter
First order low pas shown in figure. What needs?

8. Magnitude Response

9. Various Order of Butterworth Filter

11. Examples:

13. Thank you