15.8 AMPLITUDE MODULATION
Chapter 8: Chapter 15 · PHYSICS PART-2 · EN medium
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In amplitude modulation the amplitude of the carrier is varied in accordance with the information signal. Here we explain amplitude modulation process using a sinusoidal signal as the modulating signal. Let c(t) = Ac sin ,ct represent carrier wave and m(t) = Am sin ,mt represent the message or the modulating signal where ,m = 2fm is the angular frequency of the message signal. The modulated signal cm (t) can be written as cm (t) = (Ac + Am sin ,mt) sin ,ct c c c
📖 NCERT Class 12 Physics Part 2 · Page 220
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In amplitude modulation the amplitude of the carrier is varied in accordance with the information signal. Here we explain amplitude modulation process using a sinusoidal signal as the modulating signal. Let c(t) = Ac sin ,ct represent carrier wave and m(t) = Am sin ,mt represent the message or the modulating signal where ,m = 2fm is the angular frequency of the message signal. The modulated signal cm (t) can be written as cm (t) = (Ac + Am sin ,mt) sin ,ct c c c
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