Need help on Amplitude Shift keying

Discussion in 'Homework Help' started by victorment, Feb 25, 2011.

1. victorment Thread Starter Member

Jul 4, 2010
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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

Apr 5, 2008
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3. victorment Thread Starter Member

Jul 4, 2010
52
0
thanks man. But I have no idea on how to make a circuit of ask. Can you help me?

4. Ron H AAC Fanatic!

Apr 14, 2005
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What did you mean by "If I input 1101"?
Do you mean that the output voltage must be controllable by a 4 bit code?

5. victorment Thread Starter Member

Jul 4, 2010
52
0
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?

6. Ron H AAC Fanatic!

Apr 14, 2005
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A four bit code can yield 2^4=16 different output levels. You had better find out if this is what is required.

7. victorment Thread Starter Member

Jul 4, 2010
52
0
Yes that is the required. If I input 1011 the anmplitude should be 1011. Can you help me with this?