Re: AM Modulation

abhishekemittal9@xxxxxxxxxxxxxx wrote:
when v see the o/p of a AM Modulated signal in frequency domain ,why
there r three frequencies ? in spite of modulating signal is made of
single frequency?

I noticed that everyone seems to be using trig to explain the addition
of frequencies.

Having been deprived of trig, I prefer Euler's formula, which, IMO, is
simply unforgettable:

e^jw=cosw +jsinw ---> cosw=1/2(e^jw+e^-jw)

You can express all your signals in this form so that not only do the
resulting signals from modulation becomes easy compute, but you can
*see* the additions happening in the exponents.

-Le Chaud Lapin-

.

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