A simple circuit is described which can be used for both ASK and PSK operations on a sinusoidal carrier signal. The same circuit can also be used for delta modulation. The circuit developed is found very useful for laboratory demonstrations. Experimental results are quite satisfactory.
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References
1.
HaykinS., Communication Systems, Wiley Eastern Ltd. (1982)
2.
MillmanJ., Microelectronics: Digital and Analog Circuits and Systems, McGraw-Hill (1982)
