Active Filter Design: By: Benjamin Grydehoej Napier University.
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Transcript of Active Filter Design: By: Benjamin Grydehoej Napier University.
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Active Filter Design:Active Filter Design:
By: Benjamin GrydehoejBy: Benjamin GrydehoejNapierNapier University University
![Page 2: Active Filter Design: By: Benjamin Grydehoej Napier University.](https://reader035.fdocuments.net/reader035/viewer/2022062519/5697c0251a28abf838cd54ca/html5/thumbnails/2.jpg)
Active Filter Design:Active Filter Design:
Requirement for the Butterworth filter:Requirement for the Butterworth filter:
Data: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
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Active Filter Design:Active Filter Design:
Types of Types of filtersfilters::
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Active Filter Design:Active Filter Design:
Sallen-key:Sallen-key:
This circuit has a phase orientation of 0 degreeThe Gain is chosen by R3 & R4
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Active Filter Design:Active Filter Design:
Multiple Feedback: (MFB)Multiple Feedback: (MFB)
This circuit has a phase orientation of 180 degreeThe Gain is chosen by R1 & R2
![Page 6: Active Filter Design: By: Benjamin Grydehoej Napier University.](https://reader035.fdocuments.net/reader035/viewer/2022062519/5697c0251a28abf838cd54ca/html5/thumbnails/6.jpg)
Active Filter Design:Active Filter Design:Measurement:Measurement:
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Active Filter Design:Active Filter Design:Gain frequency Resopnse graph for Sallen-key:Gain frequency Resopnse graph for Sallen-key:
Ideal
Non Ideal
Practical
-3dB Practical
-10dB Practical
1000 10000
-40
-30
-20
-10
0
f
dB
![Page 8: Active Filter Design: By: Benjamin Grydehoej Napier University.](https://reader035.fdocuments.net/reader035/viewer/2022062519/5697c0251a28abf838cd54ca/html5/thumbnails/8.jpg)
Active Filter Design:Active Filter Design:Gain frequency Resopnse graph for MFB:Gain frequency Resopnse graph for MFB:
Ideal
Non Ideal
Practical
-3dB Practical
-10dB Practical
1000 10000
-40
-30
-20
-10
0
f
dB