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Electro Magnetic Waves

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sanalece

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Please describe, the detection and demodulation of OOK transmitted signal...! Unidirectional

The blocks and the circuit and its functional descriptions are expected....!

I will be more happy if there is 1 KM line of sight transmission is possible with the Transmitter.....!


Help me please
 
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Expectations are often not met.
 
What's an OOK transmitted signal?
 
If only you know then why did you ask the question?
 
You should easily be able to find many circuits available on the net for methods of detection and demodulation of OOK signals, they're extremely basic.
 
Most common method of demodulation is just a simple detector. Rectifying diode and filter. Filter set to pass bit rate of ON-OFF pulse width. In tech terms, a matched filter provide the minimum bandwidth to reduce noise while still being able the recognize the pulses. A comparitor with some hysterisis at output of filter will re-establish the square wave pulses.
 
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