Unformatted text preview: er to generate the SSB
signals of the same relative magnitude ,it is convenient to multiply m(t) by 2cosw t. This is also avoids
nuisance of the fractions ½ and yields the DSB-SC spectrum.
Mw w Mw w We suppress the USB spectrum (above wc and below –wc) to obtain LSB spectrum. Similarly to obtain
the USB, we suppress the LSB spectrum (between –wc and wc) from the DSB-SC spectrum. (a)From above figure, we can express ∅
2 cos 1300πt t 2 cos 700πt cos 900πt and ∅ t (b) From above figure, we can express...
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- Spring '08
- Cos, Band-pass filter, Low-pass filter, jM f sgn