An AM modulator has output x c (t) = A cos[2(200)t] + B cos[2(180)t] +B cos[2(220)t] The carrier power is P 0 and the efficiency

An AM modulator has output

x_c(t) = A cos[2π(200)t] + B cos[2π(180)t] +B cos[2π(220)t]

The carrier power is P₀ and the efficiency is E_ff. Derive an expression for E_ff in terms of P₀, A, and B. Determine A,B, and P₀ = 200 W and E_ff = 30%.