By: Benjamin Grydehoej Active Filter Design: By: Benjamin Grydehoej Napier University
Requirement for the Butterworth filter: Active Filter Design: Requirement for the Butterworth filter: Data: • -3 dB Pass band Attenuator • 3.4 KHz Pass band frequency • 6.0 KHz Stop band frequency • 10 dB Stop band Attenuator • 6 dB Pass band Gain
Active Filter Design: Types of filters:
Active Filter Design: Sallen-key: This circuit has a phase orientation of 0 degree The Gain is chosen by R3 & R4
Multiple Feedback: (MFB) Active Filter Design: Multiple Feedback: (MFB) This circuit has a phase orientation of 180 degree The Gain is chosen by R1 & R2
Active Filter Design: Measurement:
Gain frequency Resopnse graph for Sallen-key: Active Filter Design: Gain frequency Resopnse graph for Sallen-key:
Gain frequency Resopnse graph for MFB: Active Filter Design: Gain frequency Resopnse graph for MFB: