Need help on Amplitude Shift keying

Thread Starter

victorment

Joined Jul 4, 2010
52
I have a project at school. The professor requires as to make a circuit that outputs Amplitude shift keying. If I input 1101. the output amplitude should be shifted varying on the input. can someone please help with this project. thanks in advance
 

Thread Starter

victorment

Joined Jul 4, 2010
52
Yes. It is controllable by a 4 bit code. Can you help me? Ive tried to add the square wave carrier and the frequency sine wave. But the output is inverted. If logic 1 is present the output wave form would be low and when logic 0 is present the output would be high. Is this correct? Can you help me with this?
 

Ron H

Joined Apr 14, 2005
7,012
Yes. It is controllable by a 4 bit code. Can you help me? Ive tried to add the square wave carrier and the frequency sine wave. But the output is inverted. If logic 1 is present the output wave form would be low and when logic 0 is present the output would be high. Is this correct? Can you help me with this?
A four bit code can yield 2^4=16 different output levels. You had better find out if this is what is required.
 
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