Hi there
I have attached the magnitude and phase response of a low pass filter. The phase response is linear thus delaying all signals by the same amount. However, it is observed that there is a certain transition (circled) upward in the response.
What causes this occurrence?? I realize it happens at the valley between the pass band ripple and the stop band ripple and would like to know why..
Thanks!
I have attached the magnitude and phase response of a low pass filter. The phase response is linear thus delaying all signals by the same amount. However, it is observed that there is a certain transition (circled) upward in the response.
What causes this occurrence?? I realize it happens at the valley between the pass band ripple and the stop band ripple and would like to know why..
Thanks!