Cell phone detector circuit diagram

This mobile phone detection circuit principle can sense the presence of an activated mobile phone from a distance of half a meter, if there is an RF signal the detection circuit will notify you with an audible alarm (beep) and a flashing indicator light.

In this type of circuit (used in frequencies higher than 0.9 - 3GHz) you cannot use the frequency tuned LC circuit, this circuit uses a 0.22pF disk capacitor (C3) based on the RF circuit to ensure the circuit's ability to capture cell phone signals . This mobile phone detector can detect the activity of any mobile phone: incoming or outgoing text messages, video transmission or voice transmission. The C3 capacitor must have a length of 18mm between the information and a spacing of 8mm to get all the information. required frequency. This small disk capacitor acts as a small gigahertz loop antenna to collect the RF signal. The CA3130 op amp IC uses a current to voltage converter. This cell phone detector electronic circuit diagram can be used to verify the presence of an active cell phone in the test area.