Suppose we wish to transmit the signal x(t) = sin 200 t + 2 sin 400 t using a modulation that create the signal g(t) = x (t) sin 400 t. If the product g(t) sin 400 t is passed through an ideal LPF with cut-off frequency 400 and pass band gain of 2, the signal obtained at the output of the LPF is

Suppose we wish to transmit the signal x(t) = sin 200 t + 2 sin 400 t

1.	Suppose we wish to transmit the signal x(t) = sin 200 t + 2 sin 400 t using a modulation that create the signal g(t) = x (t) sin 400 t. If the product g(t) sin 400 t is passed through an ideal LPF with cut-off frequency 400 and pass band gain of 2, the signal obtained at the output of the LPF is
A.	sin 200 t
B.	1 2 sin 200 t
C.	2 sin 200 t
D.	0
Answer» B. 1 2 sin 200 t