1.

Which of the following is a low pass-to-band pass transformation?

A. s→\(\frac{s^2+Ω_u Ω_l}{s(Ω_u+Ω_l)}\)
B. s→\(\frac{s^2-Ω_u Ω_l}{s(Ω_u-Ω_l)}\)
C. s→\(\frac{s^2+Ω_u Ω_l}{s(Ω_u-Ω_l)}\)
D. s→\(\frac{s^2-Ω_u Ω_l}{s(Ω_u+Ω_l)}\)
Answer» D. s→\(\frac{s^2-Ω_u Ω_l}{s(Ω_u+Ω_l)}\)


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