ultrasonic sensor modulation and demodulation

Thread Starter

Azzedin1400

Joined Mar 17, 2009
6
Hello all,

I'm looking for some suggestion on modulation of the ultrasonic signal (40KHz) at the transmitter and demodulation at receiver.
any document or starting point of a schematic.

Thank you in advance
 

#12

Joined Nov 30, 2010
18,159
What type of modulation?
Frequency? Amplitude? Phase?
How much power is involved in this? Milliwatts? Killowatts?
There is a lot of information not provided.
When the, "what kind" and, "how much" arrives, the, "why" will probably be apparent.
 
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