Highlander-SP
Member level 3
A DSB-SC sinal is:
φ(t) = f(t) cos ω1t
where ω1 is carrier. We want change the frequency of the carrier from ω1 to ω2 (which is known as frequency conversion). Show that the balanced modulator circuit of the picture is needed to do this conversion, injecting f(t).cos ( ω1t ) and A.cos ( ω2 ± ω1 )t at the properly points, and using the properly filters. Supose that A >> |f(t)|.
φ(t) = f(t) cos ω1t
where ω1 is carrier. We want change the frequency of the carrier from ω1 to ω2 (which is known as frequency conversion). Show that the balanced modulator circuit of the picture is needed to do this conversion, injecting f(t).cos ( ω1t ) and A.cos ( ω2 ± ω1 )t at the properly points, and using the properly filters. Supose that A >> |f(t)|.