Cell Phone Detector Circuit Using Schottky Diode. Tunnel diode working. A schottky diode bat54 is picked as the detector diode which can rectify the low frequency ac signal.
The diode demodulates the signal and finishes detecting. The channel capacitor picked in a 100nf ceramic capacitor used to sift through ac swells. This ac signal of high frequency of the order of ghz is rectified by the schottky diode.
The signal from mobile phone is a rf signal.
This circuit can be used at examination halls meetings to detect presence of mobile phones and prevent the use of cell phones it can be used for detecting mobile phones used for spying and unauthorized transmission of audio and video it can be used to detect stolen mobile phones limitations of mobile phone detector circuit. This ac signal of high frequency of the order of ghz is rectified by the schottky diode. When a mobile phone is present near the circuit the rf signal from the mobile induces a voltage in the inductor via mutual induction. Barrier diode and low voltage diodes are the other names for schottky diode.
