I need to design a second-order high-pass filter, gain 2 and cut frequency of 500 Hz. Using chebyshev response of 0.1 dB

[Dragnovith]

I took the parameters from the MT-206 table of Analog Devices. I did not find in any book the chebyshev response of 0.1dB. https://www.analog.com/media/en/training-seminars/tutorials/MT-206.pdf

I performed the following steps to find the value of the elements :
In the image I replaced R1 / a with R1 / 1-a. But it didn't work either.

I followed the steps of the book Analog Filter Design [VAN VALKENBURG].

I think this was supposed to be very easy. But I don't know what I'm doing wrong.

The gain is about 4. But it has to be 2

If you can tell me the error. Thanks!!

 

[KlausST]

Hi,

there are online calculators for multiple_feedback / SallenKey filter architectures.
Do an internet search.

Or maybe tools that need to be installed on your computer.

Klaus

 

[crutschow]

The gain of a non-inverting op amp is 1+(R3/R4), so for a gain of 2 R3 and R4 must have the same value.
How did you come up with the values you used?

Try FilterPro from Texas Instruments.