How to attenuate an already amplified output?

[chebyshevF]

I have a high pass filter circuit, which I've designed from a transfer function, and from the Bode Plot, I'm getting some amplification, yet I don't want that. I just want my input=ouput at the frequency where amplification starts. How can i go about to do this?

Should i introduce another capacitor in series? A voltage follower perhaps?

 

[berkeman]

I have a high pass filter circuit, which I've designed from a transfer function, and from the Bode Plot, I'm getting some amplification, yet I don't want that. I just want my input=ouput at the frequency where amplification starts. How can i go about to do this?

Should i introduce another capacitor in series? A voltage follower perhaps?

If you can accommodate the inversion, use an inverting opamp circuit and set the gain to 1/ the gain of the HPF circuit's gain.

 

[chebyshevF]

^^Actually I tried an inverting opamp, yet didn't think of setting the gain to the inverse of my HPF circuit's gain. I don't understand why though? So it swaps the pole and zero that i have, hence i get new capacitor values..i can't quite put my 'finger' on it but it kinda makes sense.

 

[berkeman]

^^Actually I tried an inverting opamp, yet didn't think of setting the gain to the inverse of my HPF circuit's gain. I don't understand why though? So it swaps the pole and zero that i have, hence i get new capacitor values..i can't quite put my 'finger' on it but it kinda makes sense.

A simple inverting amp stage after the output of your filter should not affect any poles or zeros of the total transfer function. If the gain of your filter is x2, just make the gain of your inverting amp stage -1/2.