engineering recuitment GATE IN Test Series 2023-24 Mock Test Communication Systems Amplitude Modulation Double Sideband Suppressed Carrier(DSB-SC) Modulation
A DSB-SC signal is to be generated with a carrier frequency fc = 1 MHz using a non-linear device with the input-output characteristic \({v_0} = {a_0}{v_i} + {a_1}v_i^3\) where a0 and a1 are constants. The output of the non-linear device is filtered by an appropriate band-pass filter. Let \({v_i} = A_c'\cos \left( {2\pi f_c't} \right) + m\left( t \right)\), where m(t) is the message signal. Then, f'c = ______MHz
1
1.0
2
0.333
3
0.5
4
3.0