In Problem 6.33, we considered a system commonly used to obtain a highpass filter from a...

In Problem 6.33, we considered a system commonly used to obtain a highpass filter from a lowpass filter and vice versa. In this problem, we explore the system further and, in particular, consider a potential difficulty if the phase of H(jω) is not properly chosen.

(a) Referring to Figure P6.33, let us assume that H(jω) is real and as shown in Figure P6.34. Then