Hello, I would like to detect electromagnetic field frequencies ranging from 700MHz to 5GHz (or a little less) and read them on my arduino monitor to then be able to manipulate them and associate them with outputs.
I found quite a few tutorials for making EMF detectors on arduino but they mainly capture waves at lower frequencies and I don't know which ones exactly.
Could you help me?
A tuned loop works: The Creative Science Centre - by Dr Jonathan P. Hare
Here is one on a PCB detecting leakage from a microwave oven, using a microwave detector diode:
Do you have devices that will generate signals at those frequencies? If you use you cell phone, remember that it rarely transmits unless you are talking to someone.
If you do not have a signal generator, you will have great difficulty in testing your device.
Hello, thank you for your response,
yes I am quite equipped.
I also have some "industrial" EMF detectors.
I would like to make one to be able to use the data received from arduino.
And that "data" will be a number from 0 to 1023. Right?
What would the detector do with "data" from the Arduino?
The values received will necessarily be between 0 and 1023. I want to recover the frequency values to operate devices (DC motors) when they are between 700MHz and 5GHz. I imagine that you need a device upstream to translate the frequencies in Hertz into numbers between 0 and 1023...
Measuring frequency values in that range will necessarily be the function of the detector, as it is completely out of the question for any Arduino to do so. Wide band radio chips are available for that purpose.
I don't think you will get much further on this forum with such vague statements about your project.
Well, you can't if you mean directly measure, WAY TOO WEAK. But you can use a variable frequency source and match it to the received frequency and measure that variable frequency.
Spend some time researching microwave frequency counters.
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