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  1. 1. Cell Phone Jammer Incorporated with Cell Phone Detector <br />RicrelCochon Jimenez<br />I-DA2<br />Prof. Alexander Redor<br />1<br />
  2. 2. Contents<br />Introduction<br />Types of Jammer<br />How Jammer Works<br />What inside Jammer<br />Applications of Jammer<br />Future scope of Jamming Technology<br />Cell Phone Detector Introduction<br />Block Diagram<br />Application<br />Conclusion<br />2<br />
  3. 3. Cell phone jammers are devices that create a temporary "dead zone" to all cell phone traffic in their immediate proximity<br />Introduction<br />3<br />
  4. 4. Jamming techniques<br />Type "A" Device: JAMMERS<br />Type “B” Device: INTELLIGENT CELLULAR DISABLERS<br />Type “C” Device: INTELLIGENT BEACON DISABLERS<br />Type “D” Device: DIRECT RECEIVE & TRANSMIT JAMMERS<br />Type “E” Device: EMI SHIELD - PASSIVE JAMMING<br />4<br />
  5. 5. How Jammer Works<br />A jamming device transmits - same radio frequencies of greater power as the cell phone, disrupting the communication between the phone and the cell-phone base station in the tower. It's a called a denial-of-service attack. <br />.....Jamming basics....<br />5<br />
  6. 6. This causes interference with communication of cell phones and towers to render the phones unusable. On most phones, the network would be out of range. <br />So Jammers work by either disrupting phone to tower freq.. or tower to phone frequencies. <br />6<br />
  7. 7. Design Parameters/ Specification<br />The frequency bands<br />Distance to be jammed (D)<br />PjGjrGrj R2trLr Br<br />Jamming–to-signal ratio {J/S}= <br /> PtGtrGrt R2jrLjBj<br /> <br /> <br />Free space loss {F}= Path Loss (dB)= 32.44 + 20 log D(km) + 20log f(MHz)<br />Power calculations<br />7<br />
  8. 8. Block Diagram<br />If section<br />Rf section<br />Jamming signals<br />Power supply<br />8<br />
  9. 9. Power supply<br />Transformer<br />Rectifier <br />Regulator<br />9<br />filter<br />
  10. 10. IF section<br />Triangular wave generator<br />Noise generator<br />Mixer summer <br />“Summer”<br />10<br />
  11. 11. Rf section<br />Voltage Controlled Oscillator<br />Power Amplifier <br />Antenna<br />11<br />
  12. 12. Application <br />To maintain the complete silence in library and lecture hall<br />To avoid fraud in examination hall<br />To avoid disturbance in class room<br />For providing security in business conference, board of directors rooms, seminars, etc., <br />For providing calm and peaceful atmosphere in Hospitals <br />Church/Mosques/Cathedral/Temple/Religious establishment<br />12<br />
  13. 13. Future scope of Jamming Technology<br />While the law clearly prohibits using a device to actively disrupt a cell-phone signal, there are no rules against passive cell-phone blocking. <br />Companies are working on devices that control a cell phone but do not "jam the signal. <br />13<br />
  14. 14. Cell phone detector<br />Introduction<br />14<br />
  15. 15. Block Diagram<br />15<br />
  16. 16. Applications<br />Cell-phone alerter (detector) is useful that indicate the presence of a cell-phone signal. These can be used in hospitals where cell-phone signals could interfere with sensitive medical equipment. When a signal is detected, users are asked to turn off their phones or Jamming can be used.<br />It is useful airport.<br />It is useful in class rooms and examination hall.<br />It is useful wherever cell phone can disturb.<br />16<br />
  17. 17. Conclusion<br />Every technology has good aspect as well as bad aspect the important thing is ,how we are using it.<br />Cell phone jammers are very useful to the society from the anti-social elements. We can save our national leaders. we can restrict the communication network between the anti-social elements by using the cell phone jammers. Cell phone jammers prevent the students from carrying cell phones to the colleges. As every thing goes fine, it is very necessary to implement in all the colleges<br />17<br />
  18. 18. Shri Mata Vaishno Devi University, Katra<br />18<br />