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Design a Notch filter #14

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yashsaini2727 opened this issue Sep 4, 2021 · 0 comments
Open

Design a Notch filter #14

yashsaini2727 opened this issue Sep 4, 2021 · 0 comments
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aquisition enhancement New feature or request research Needs some research

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@yashsaini2727
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yashsaini2727 commented Sep 4, 2021

Use Eagle software to build a schematic of the Notch filter.
We will be using OTA notch filters (Gm-C filters) for continuous-time filtering.
[An alternative is an op-amp notch filter but it is mostly for digital signals; to deal with analogue signals to a high degree of accuracy, OTAs are used]
The file is to be submitted as notch_filter.sch

  • the schematic should be of 2nd-Order Gm-C Notch Filter (the higher the order the better)
  • The purpose of a notch filter is to exclude a single frequency from the EEG signal. (in our case it will be 50 Hz)
  • Notch depth should be more than 50 dB.
  • use operational transconductance amplifier (OTA) model OTA LM13700
  • Here is a paper that can be used as a reference. further reading
@yashsaini2727 yashsaini2727 added documentation Improvements or additions to documentation enhancement New feature or request research Needs some research and removed documentation Improvements or additions to documentation labels Sep 4, 2021
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Labels
aquisition enhancement New feature or request research Needs some research
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