Amplitude modulation: Difference between revisions
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(some pics demonstrating AM) |
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The Carrier Signal has usually a higher [[Frequency]] than the modulating signal. |
The Carrier Signal has usually a higher [[Frequency]] than the modulating signal. |
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==An Example== |
==An Example== |
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|[[Image:AM_picture1.jpg|Carrier Signal in time domain]] |
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|[[Image:AM_picture4.jpg|Carrier Signal in frequency domain (to be added)]] |
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Picture3: Modulating Signal in time domain |
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|[[Image:AM_picture2.jpg|Modulating Signal in time domain]] |
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|[[Image:AM_picture5.jpg|Modulating Signal in frequency domain (to be added)]] |
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Picture5: Modulated Signal |
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|[[Image:AM_picture3.jpg|AM Signal]] |
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|[[Image:AM_picture6.jpg|AM Signal in frequency domain (to be added)]] |
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==special kinds of AM== |
==special kinds of AM== |
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Revision as of 21:43, 26 September 2004
What is AM?
Amplitude Modulation is the done by modulating the Amplitude of an sinoid Carrier signal. The Carrier Signal has usually a higher Frequency than the modulating signal.
An Example
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Carrier Signal in frequency domain (to be added) |
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Modulating Signal in frequency domain (to be added) |
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AM Signal in frequency domain (to be added) |
special kinds of AM
- DSSC, double side band supressed carrier
- SSB, single side band
- residual sideband modulation (modulation used for analog TV applications)
- QAM