Filter: High Pass Filter

Today, we are going to talk about high pass filter which mean it will attenuate low frequency and let high frequency pass. Sometimes, it uses to emphasize the high frequency. Firstly, let’s look at the transfer function of the high pass filter. Here, we introduce you to the first order high pass filter and the example are shown as follow. This transfer function can be plot as frequency response and phase response.

The code for plot this transfer function is here.

Now, we are going to simulate this circuit using LTspice with AC analysis.

Here, the simulate is verify then we build the circuit and measure the output and input voltage to plot the frequency response and phase response. The result is shown.

The code which show the data is here.

Thanks for reading.