Mixing of a two signalsl in mixer

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abhijitrc

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Since in mixer we multiplying two signals (periodic) in time domain, is this a convolution in frequency domain? How we can explain it ? Plz do guide me.
 

This is convolution in frequency domain.It is obtained from the principle of duality.
It is given by the formula,
x(t)y(t)\[\Leftrightarrow\]\[\frac{ 1}{ 2pi}\](X(\[\omega\])*Y(\[\omega\])).
The proof for this formula can be obtained easily.Hope this helps.
 

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