Making of a Cell Phone Detector.
Abstract
This Cellphone detector detects signals in frequency range of 0.9 GHz to 3 GHz when an active phone is within a radius of 1.5 meters.
Once the phone is within the radius of 1.5 meters a signal is detected by blinking of light emitter diode which enables the invigilator to investigate and locate an active phone being used in an examination room.