Binary Amplitude Shift Keying (BASK) or On Off Keying (OOK) Practical Circuit using CD 4016

Posted on Feb 6, 2014

Binary Amplitude Shift Keying (BASK) or On Off Keying (OOK) is one of the digital modulation techniques in which the amplitude of carrier is switched according to the binary data. This digital modulation scheme is used to transmit digital data over optical fiber, point to point military communication applications, etc. Binary 1 is represented by a

Binary Amplitude Shift Keying (BASK) or On Off Keying (OOK) Practical Circuit using CD 4016
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short pulse of light and binary 0 by the absence of light. Amplitude Shift Keying modulation and demodulation processes are relatively inexpensive and easy to implement. The main disadvantage of ASK is that it is sensitive to atmospheric noise, distortions and propagation conditions. Here is the practical circuit diagram of amplitude shift keying modulator using CD4016 IC. CD4016 is aswitchingIC with four embedded switches. Two switches inside the quad analog switch CD 4016 are used in the circuit. When the enable input of one gate is at high, then the input will appear at the output. When the binary data is 1, sine wave is switched to output because the sine wave is connected to 1st switch and the binary data is applied to enable pin (13th pin) of 1st switch.

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