MOBILE PHONE JAMMER

ABSTRACT

Along with technology advances in mobile communication, the destruction due to it is also increasing day by day. Now a day’s security plays an important role in restricted areas like educational institutions, theaters, conference rooms, jail, temples hospitals and military areas etc, where using mobile phones are banned and to control these type of situation mobile jammers came in existence.

The project “mobile phone jammer” is designed to provide security where using mobile phones are absolutely restricted. Mobile Phone Jammer” or “Jammer”: a device forintentionally blocking mobile phone networkfrequencies to prevent mobile phones fromoperating. Since the jammers are radio transmitters, theRadiocommunications Act requires thatthey also be licensed. The Act forbids the issue of a new license if to do so would cause harmfulinterference to an already licensed service.

The system is designed with noise generator is used to generate the low frequency noise, sweep signal generator for Sweep signal, mixer will mixes these two Signals and finally applied to RF section in which we have a RF generator which generates HF signals mixed with the mixture output and it will be amplified with the help of RF amplifiers and the power amplifiers and this noise signal will be radiated into the air with the help of an antenna as this noise frequency will be in the range of the mobile Frequency so it will jammer that mobile with in that range of rays existence. Whenever we activate jammer, jammer will produce HF audio (noise) signal in RF range to cut off communication between mobile phone and base station. All mobile phones in jammer range will indicate no signal and it will block both CDMA and GSM also. In this the noise and the sweep signals are generated with the help of controller and a key is been kept to activate or to deactivate this jammer signals and the status will be displayed in the LCD display.

APPLICATIONS:

Jails, to stop criminals using mobile phones for anti social activities.

Hospitals for ICU and operation theaters.

Educational institutes in case of libraries, class room, etc.

Temples, mosque, gurudawara and all religious establishments.

HARDWARE USED:

Microcontroller

Mixer circuit

RF Section

Power supply

LCD display

Key

SOTWARE USED:

Keil μvision

Express PCB

Express Schematic

BLOCK DIAGRAM:

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