Active highpass filter

A passive band pass filter can be built by cascading a passive high pass filter (C1 and R1) to a passive high pass filter (C2 and R2) and vice versa. The passband of this filter is 1060 Hz < f < 28420 Hz. In ideal case, Vin is the same as Vout when f is within the passband. Vin will be attenuated if f is out of the passband. The circuit is not ideal and have Voltage Gain < 1 . Vout will be slightly smaller than Vin even if f is within the passband. To view the attenuation effect of the filter, run Interactive or Transient analysis and change the frequency of the signal generator. To view the frequency response of the filter, run AC Sweep analysis. Resource: https://www.electronics-tutorials.ws/filter/filter_4.html