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Due to economic reasons, only the upper sidebards of an AM wave is transmitted, but at the receiving station there is a facility for generating the carrier. |
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Answer» Solution :Let the two signals be represented by `A_(1) cos(omega_(c)+ omega_(m))t and A_(c ) cos omega_( c)t` MULTIPLYING the WAVES we GET, `A_(1)A_(c) cos(omega_(c) + omega_(m))t cdot cos omega_(c)t` `= (A_(1)A_(c))/(2) cos omega_(m)t + (A_(1)A_(c))/(2) cos (2omega_(c) + omega_(m))t` The separation of the relationship clearly indicates that the modulatingsignal `(A_(1)A_(c))/(2) cos omega_(m)t` can be easily recovered at the receiving station. |
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