Quad band mobile phone jammer

Abstract

Mobile jammer is an electronic device that renders mobile phones from receiving or transmitting signals with the base stations effectively. Mobile jammers can be used in practically at any location, but are used in places where a phone call would be particularly disruptive like Libraries, Hospitals, Cinema halls, schools and colleges and could also be used to prevent the hostile transmissions. As with other radio jamming, mobile jammers block mobile phone use by sending out noise induced radio waves along the same frequencies that mobile phones use. This causes interference with the communication between mobile phones and communicating towers to render the phones unusable. Mobile Jammers were originally developed for law enforcement and the military to disrupt communications by criminals and terrorists to foil the use of certain remotely detonated explosives. This project aims at designing and constructing a Quad band mobile phone jammer to avoid explosions using mobile carriers having effective range of approximately 45-50 meters which could be enhanced by using directional antennas or advanced high power amplifiers. The commercially available jammers are dual band GSM and are very expensive. It also provides the solution of covering all the 4 mobile frequency bands and is cost effective.