Mumbai University > Computer Engineering > Sem 3 > Electronic Circuits and Communication Fundamentals

Marks: 10 Marks

Year: May 2015

1. The equation of AM wave in its simplest form i.e. single tone modulation, is expressed as:

$$s(t)=A \cos\omega_ct+A\dfrac{m_a}{2}\cos(\omega_c+\omega_m)t+A\dfrac{m_a}{2}\cos(\omega_c-\omega_m)$$

1. From this equation, it is obvious that the carrier component in AM wave remains constant in amplitude and frequency. This means that the carrier of amplitude modulated wave does not convey any …