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Cell Phone Jammer Incorporated with Cell Phone Detector <br />By<br />ShishuPriyaDarshi<br />2007EEC08<br />Naresh Prasad<...
Contents<br />Introduction<br />Types of Jammer<br />How Jammer Works<br />What inside Jammer<br />Applications of Jammer<...
Cell phone jammers are devices that create a temporary "dead zone" to all cell phone traffic in their immediate proximity<...
Jamming  techniques<br />Type "A" Device: JAMMERS<br />Type “B” Device: INTELLIGENT  CELLULAR DISABLERS<br />Type “C” Devi...
How Jammer Works<br />A jamming device transmits - same radio frequencies of greater power as the cell phone, disrupting t...
This causes  interference with communication of cell phones and towers to render the phones     unusable. On most  phones,...
  Design Parameters/ Specification<br />The frequency bands<br />Distance to be jammed (D)<br />PjGjrGrj R2trLr Br<br />Ja...
Block Diagram<br />If  section<br />Rf  section<br />Jamming signals<br />Power supply<br />8<br />Shri Mata Vaishno Devi ...
Power supply<br />Transformer<br />Rectifier <br />Regulator<br />9<br />Shri Mata Vaishno Devi University, Katra<br />fil...
IF section<br />Triangular wave generator<br />Noise generator<br />Mixer summer <br />“Summer”<br />10<br />Shri Mata Vai...
Rf section<br />Voltage Controlled Oscillator<br />Power  Amplifier <br />Antenna<br />11<br />Shri Mata Vaishno Devi Univ...
Application <br />To maintain the complete silence in library and lecture hall<br />To avoid fraud in examination hall<br ...
Future scope of Jamming Technology<br />While the law clearly prohibits using a device to actively disrupt a cell-phone si...
Cell phone detector<br />Introduction<br />Shri Mata Vaishno Devi University, Katra<br />14<br />
Block Diagram<br />15<br />Shri Mata Vaishno Devi University, Katra<br />
Applications<br />Cell-phone alerter (detector)  is useful that indicate the presence of a cell-phone signal. These can be...
Conclusion<br />Every technology has good aspect as well as bad aspect the important thing  is ,how we are using it.<br />...
			QUERIES<br />Shri Mata Vaishno Devi University, Katra<br />18<br />
Shri Mata Vaishno Devi University, Katra<br />19<br />
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Cell phone jammer ppt

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Transcript of "Cell phone jammer ppt"

  1. 1. Cell Phone Jammer Incorporated with Cell Phone Detector <br />By<br />ShishuPriyaDarshi<br />2007EEC08<br />Naresh Prasad<br />2007EEC67<br />Department of Electronics & Communication Engineering<br />1<br />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<br />
  8. 8. Block Diagram<br />If section<br />Rf section<br />Jamming signals<br />Power supply<br />8<br />Shri Mata Vaishno Devi University, Katra<br />
  9. 9. Power supply<br />Transformer<br />Rectifier <br />Regulator<br />9<br />Shri Mata Vaishno Devi University, Katra<br />filter<br />
  10. 10. IF section<br />Triangular wave generator<br />Noise generator<br />Mixer summer <br />“Summer”<br />10<br />Shri Mata Vaishno Devi University, Katra<br />
  11. 11. Rf section<br />Voltage Controlled Oscillator<br />Power Amplifier <br />Antenna<br />11<br />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<br />13<br />
  14. 14. Cell phone detector<br />Introduction<br />Shri Mata Vaishno Devi University, Katra<br />14<br />
  15. 15. Block Diagram<br />15<br />Shri Mata Vaishno Devi University, Katra<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 />Shri Mata Vaishno Devi University, Katra<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 />References<br />[1] www.HowStuffWorks.com<br />[2] en.wikipedia.org/wiki/Mobile_phone_jammer<br />Shri Mata Vaishno Devi University, Katra<br />17<br />
  18. 18. QUERIES<br />Shri Mata Vaishno Devi University, Katra<br />18<br />
  19. 19. Shri Mata Vaishno Devi University, Katra<br />19<br />
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