Mobile phone detection circuit diagram

Test probe P100-M3

Mobile phone crystal 3.2*2.5mm 3225 26M (26.000MHZ) 7.5PF 10PPM 20PPM 30PPM

Single chip microcomputer STM32L151CCU6

Test - lowercase jpg

Kaixin micro test

This type of circuit (using a high frequency of 0.9 - 3GHz), you can't use the frequency to tune the LC circuit, which uses a 0.22pF disk capacitor (C3) according to 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 SMS, video transmission or voice transmission C3 capacitor must have information and the information between the 8mm spacing is 18mm in length to obtain The frequency required. This small disk capacitor acts as a small gigahertz loop antenna to collect RF signals. The CA3130 op amp IC uses a current-to-voltage converter, an electronic circuit diagram of this cell phone detector that can be used to verify the presence of an active cell phone in the test area.