Question

j2w HW) 1 + j2w Is this a high-pass, low-pass, bandstop or bandpass filter? Show evidence to support your choice.

Answer 1

Low pass filter:-

It gives output at low frequency. After the cutt off frequency, the output become zero.

High pass filter :-

It gives output at high frequency. Before the cutt off frequency, i gives output zero.

Band pass filter:-

The filter which can pass only specific frequency band. And block another frequency signals.

Band reject filter or band stop signal :-

It stop or reject some specific frequency components and pass all another frequency signals

if we see the frequency responses

H(W) = 12W traw at w=0 H(W)= 0 zo Ito at w=0 H(W) = f2w J2w ( /jaw +1) 72w+1 H(W) = I= 0 +1 AH (W) Hmax / Home Wc 3.

At low frequency, its response is 0.

At high frequency, its response is 1

It means it pass high frequency signal and block all low frequency signal.

So this is High pass filter ( HPF).