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Amplitude shift keying lab mannual
Typology: Study notes
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AIM: To study and implement ASK modulation and demodulation schemes and to observe the waveform.
EQUIPMENT REQUIRED:
Equipment Range Quantity
CRO (0-20) MHz 1 Function Generator (0-1) MHz 2 Power Supply (0-30) V 1 +5V 1
COMPONENTS REQUIRED:
Component Value Quantity
Op-amp 741 1 Transistor BC107 1 Resistor 1 kΩ 5 10 kΩ (pot) 1 Capacitor 0.01μF 2
To represent a digital data, finite number of distinct signals is used. ASK uses a finite number of amplitudes, each assigned a unique pattern of binary digit. Each amplitude signal encodes an equal number of bits. Each pattern of bits forms the symbol that is represented by the particular amplitude. In digital communications ASK is a modulation process, which imparts to a sinusoid two or more discrete amplitude levels. These are related to the number of levels adopted by the digital message.
PROCEDURE:
WAVEFORM: