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How to eliminate the peak of the band-pass filtered curve?

Hardware design
8월 24, 2020 by Maja 565

According to the curve of each frequency band measured by the circuit in the figure, there will be a spike at 10HZ and 100HZ. Why is this affected? And the bandwidth in the 100K and 1M frequency bands is not enough. I don’t know what is going on?

QQ图片20200729151716.png

QQ图片20200729151653.png

QQ图片20200729151338.png

모든 댓글

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Asha 게시 날짜 August 24, 2020

Adjust R43, C30, C28, the value can change the passband, it will be possible.

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  • Maja

    Maja 게시 날짜 August 24, 2020

    The figure below is my high frequency value:

    QQ图片20200730151600.png

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Bodhi 게시 날짜 August 24, 2020

Continue to adjust the value again, will achieve the goal.

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Shreya 게시 날짜 August 24, 2020

To widen the high frequency bandwidth, the rcl resonant circuit and frequency need to be adjusted appropriately.

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