Dear all,
I want to develop a circuitry which is able to detect electromagnetic waves(radio-wave , micro-wave).
This circuit will just act as a tamper detect and not physically measure/compute the radiation.
I have designed the circuit using toroid ring and few Schottky diodes.
The calculation formulae's are in the attachment.
Before testing the circuit, I wanted to verify the circuit as well as the calculation part of it.
Please note that the WAVE_SENSE signal in the design is connected to a 10-bit ADC of a Microcontroller.
Anyone related, Please help me achieve this task.

Thanks in advance.

 

I checked mine by holding it near an operating microwave over, a cell phone, an AM radio transmitter (433 MHZ) and keyfob trasmitter at 330 MHz.

 

If the coil is wound on a toroid wouldn't that make it much less sensitive to external signals?

 

If the coil is wound on a toroid wouldn't that make it much less sensitive to external signals?

So, what could possibly be an alternative to this.
To a coil??
Please help me on this. Have you come across a device which could detect microwaves??

 

Also D23 should be connected between GND and the junction of C31 and the other D23 otherwise C31 has no discharge path.

 

This is how its done simply. I would have thaught a detector should be actualy tuned to the frequency you are trying to detect. The cheap detectors on Ebay are suposedlly wide band to the point you would not know what it was detecting.

 

My field strength indicators use antennas, usually just several cm of insulated wire. No need to use the inductor as an antenna.