849 http://ijesc.org/ DOI 10.4010/2014.254 ISSN-2321 -3361 © 2014 IJESC An Architecture Design of Novel Mobile Jammer using FPGA M. Raveendranad 1 , Mr. D.M.K. Chaitanya 2 M Tech (VLSI) 1 , M.E. (Ph.d), M.B.A, Associate Professor & Head,Dept. of ECE 2 Avanthi Institute of Engineering & technology, Hyderabad. Abstract: Mobile Jammer is one of the instruments used to prevent the cellular phones from receiving signals from Base Stations. Cell Phone Jammers are very useful to the society from the anti social elements by using the mobile jammers. So, in this paper we are designing a new Mobile Jammer unit which is capable of blocking the cell phone working not the signal receiving from Base Station, which make effective use of the situation where jammers actually used.By using the FPGA and RF technology to implement low cost jammers is implemented. Keywords: Jammers, Mobile Jammer, FPGA, RF Transmitter, RF Receiver, LCD. Introduction Cell phones are everywhere these days. According to the Cellular Telecommunications and Internet Association, almost 195 million people in the United States had cell- phone service in October 2005. And cell phones are even more ubiquitous in Europe. A Mobile Phone Jammer is basically defined as a Device that stops any communication process within Phones. Due to the rising Number of Mobile Phone Subscribers, there are also rising concerns such as breach of privacy and cheating at exams in Schools/College/University. Mobile Phone Jammers are also use to disrupt communications by outlaws and rebels, which hampers their illegal and violent Operations. There are Mobile Phone Jammers that are designed to stop the Remote Capabilities of Mobile Phones from causing Improvised Explosive Device (IED) explosions by terrorists. As an Expert Mobile Phone Signal Jammer Supplierinside Integrated Marketing Services is providing Variety Mobile Phone Signal Jammers to Various Normally Mobile Jammers are used in the Nursing Schools and Colleges to Maintain Discipline and Order within the Institution. Mobile Phones are wrongly utilized by Students in the Examination. Mobile Phone Jammers Mobile Phone Jammers Keep discipline in silent area like Class Rooms, Temples, masjid, gurudwaras and Meditation Center. In a Nursing College, Discipline and Duty with Silence is very necessary to Maintain Patient Security, Care and HospitalManagement System. So all the Nursing Colleges has to train their Students with strict discipline of not using Mobile Phones inside the Nursing College Campus or inside the Class Rooms., We are providing Mobile Signal Jammers to prison, theater, conference center, library, church, gas station, school campus, Government Hospitals, and Military site etc. Mobile Phone Inside Cell Phone Jammers Electronically speaking, cell-phone jammers are very basic devices. The simplest just have an on/off switch and a light that indicates it's on. More complex devices have switches to activate jamming at different frequencies. Components of a jammer include: Antenna Every jamming device has an antenna to send the signal. Some are contained within an electrical cabinet. On stronger devices, antennas are external to provide longer range and may be tuned for individual frequencies. Circuitry The main electronic components of a jammer are:  Voltage-controlled oscillator - Generates the radio signal that will interfere with the cell phone signal  Tuning circuit - Controls the frequency at which the jammer broadcasts its signal by sending a particular voltage to the oscillator Research Article September 2014 Issue