Hi Guys,

I want to transmit 250 KHz ultrasonic waves using radiofrequency transmitter and receive the data at the receiver.
As a newbie in communication engineering, I dont have much expertees in designing trasmitter and receiver.
Can any one help me with component selection and circuit designing for transmitter and receiver?

Thanks

 

Quite a difference between ultrasonic waves and radio-frequency waves.

Ultrasonics transmit acoustic pressure waves.
RF is electromagnetic waves.

Which one do you want?

 

Thanks mate for answer.
All I need is, the I need to transmit Ultrasonic waves generated by Piezoelectronic transducer over a distance of 5 meter.
Which kind of electronic circuitery I should use.

Mit

 

I need to transmit Ultrasonic waves generated by Piezoelectronic transducer over a distance of 5 meter.

In what medium? Gas, liquid, solid? For gas, perhaps you could use or hack a cheapo HC-SR04 module (though that probably doesn't work on 250kHz).

 

Thanks mate for the answer. I need to transmit data in air. I have looked though HC-SR04 module and the problem with that module is transmitter and receiver are located at the same place. I need modules where i can place transmitter and receiver at a distance.
Any suggestion?

 

Next question - What are you trying to do?

You can buy piezoelectric ultrasonic transducers and build the transmitter and receiver circuitry. Acoustic frequency is usually around 40kHz.

 

Why 250kHz? That will be attenuated by the air much more than the usual 40kHz, so would need either a more powerful transmitter or a more sensitive receiver.

 

Hi Guys,

I want to transmit 250 KHz ultrasonic waves using radiofrequency transmitter and receive the data at the receiver.
As a newbie in communication engineering, I dont have much expertees in designing trasmitter and receiver.
Can any one help me with component selection and circuit designing for transmitter and receiver?

Thanks

I think it is very possible to transmit 250KHz thru the air. The navigation system prior to GPS was Loran-c. It's carrier frequency was 100KHz. The range was in hundreds of miles, and sometimes over a thousand miles. I think the most difficult thing to build will be the transmitting antenna. As I think about it, a ferrite rod with a winding on it, could easily be made to resonate at 250KHz.

 

An ultrasonic wave is a matter wave. A pressure wave. A relay of vibration.

Loran is an EM emission.