Cell phone jammer ppt


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Cell phone jammer ppt

  1. 1. Cell Phone Jammer By Sameer gupta B.TECH (ECE) 2010 to 2014Department of Electronics & Communication Engineering Amity university rajasthan 1
  2. 2. Contents• Introduction• How Cell Phone Jammer Works• Types of Jamming techniques• Design Parameters/ Specification Types of jammer device• Block Diagram• Types Of Jammer Device• Applications of Jammer• Future scope of Jamming Technology• Conclusion Amity university rajasthan 2
  3. 3. IntroductionCell phone jammers are devices that create atemporary "dead zone" to all cell phonetraffic in their immediate proximity Amity university rajasthan 3
  4. 4. How cell phone jammer worksA jamming device transmits - same radio frequencies ofgreater power as the cell phone, disrupting thecommunication between the phone and the cell-phonebase station in the tower. Its a called a denial-of-service attack. Amity university rajasthan 4
  5. 5. • 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.• So Jammers work by either disrupting phone to tower freq.. or tower to phone frequencies. Amity university rajasthan 5
  6. 6. Jamming techniques• Type "A" Device: JAMMERS• Type “B” Device: INTELLIGENT CELLULAR DISABLERS• Type “C” Device: INTELLIGENT BEACON DISABLERS• Type “D” Device: DIRECT RECEIVE & TRANSMIT JAMMERS• Type “E” Device: EMI SHIELD - PASSIVE JAMMING Amity university rajasthan 6
  7. 7. Jamming techniques1. Type "A" Device: JAMMERS This type of device comes equipped with several independent oscillators transmitting ’jamming signals’ capable of blocking frequencies used by paging devices as well as those used by cellular systems control channels for call establishment. Amity university rajasthan 7
  8. 8. Jamming techniques2.Type “B” Device: INTELLIGENT CELLULAR DISABLERS Unlike jammers, Type ”B” devices do not transmit an interfering signal on the control channels. The device, when located in a designated ’quite’ area, functions as a ’detector’. It has a unique identification number for communicating with the cellular base station. Amity university rajasthan 8
  9. 9. Jamming techniques3. Type “C” Device (Intelligent Beacon Disablers)Unlike jammers, Type C devices do not transmit an interfering signal on the control channels. The device, when located in a designated ’quiet’ area, functions as a ’beacon’ and any compatible terminal is instructed to disable its ringer or disable its operation, while within the coverage area of beacon. Amity university rajasthan 9
  10. 10. Jamming techniques4. Type “D” Device (Direct Receive & Transmit Jammers)This jammer behaves like a small, independent and portable base station, which can directly interact intelligently or unintelligently with the operation of the local mobile phone. The jammer is predominantly in receive mode and will intelligently choose to interact and block the cell Phone directly if it is within close proximity of the jammer. Amity university rajasthan 10
  11. 11. Jamming techniques5. Type E Device (EMI Shield - Passive Jamming)This technique is using EMI suppression techniques to make a room into what is called Faraday cage. Although labor intensive to construct, the Faraday cage essentially Blocks or greatly attenuates, virtually all electromagnetic radiation from entering or leaving the cage - or in this case a target room. Amity university rajasthan 11
  12. 12. Design Parameters/ SpecificationThe frequency bandsDistance to be jammed (D)Free space loss {F}= Path Loss (dB)= 32.44 + 20 log D(km) + 20log f(MHz) Power calculations Amity university rajasthan 12
  13. 13. Block Diagram JammingPower supply If section Rf section signals Amity university rajasthan 13
  14. 14. Power supplyTransformer Rectifier filter Regulator Amity university rajasthan 14
  15. 15. IF sectionTriangular wave Mixer summer generator Noise generator “Summer” Amity university rajasthan 15
  16. 16. IF section
  17. 17. RF section VoltageControlled Power Amplifier AntennaOscillator Amity university rajasthan 17
  18. 18. RF section
  19. 19. Contd.Cell Phone JammerAmity university rajasthan 19
  20. 20. Types of jammer deviceTypes of cell phone jammer device There are many types of cell phone jammer device which is used inour daily life .as we take a example of class room ,where we does notwant to use of cell phone than there we can use cell phone jammerdevice .by this we can produce the interface between the cell phonebase station and cell phone . resulting it disconnect the cell from basestation .and we can not receive the any calls from base station.For this there are many types of cell phone jammer devices which isgiven as below: Amity university rajasthan Contd.
  21. 21. • Remote Control cell phone jammer• Adjustable cell phone Jammer• School &Prison Phone Jammer• Explosion – Proof cell phone jammer• Police & Mila try Phone Jammer• Portable Cell Phone Jammer Amity university rajasthan
  22. 22. Amity university rajasthan
  23. 23. Application• To maintain the complete silence in library and lecture hall• To avoid fraud in examination hall• To avoid disturbance in class room• For providing security in business conference, board of directors rooms, seminars, etc.,• For providing calm and peaceful atmosphere in Hospitals• Church/Mosques/Cathedral/Temple/Religious establishment Amity university rajasthan 23
  24. 24. Future scope of Jamming Technology• While the law clearly prohibits using a device to actively disrupt a cell-phone signal, there are no rules against passive cell-phone blocking.• Companies are working on devices that control a cell phone but do not "jam the signal. Amity university rajasthan 24
  25. 25. Conclusion• Every technology has good aspect as well as bad aspect the important thing is ,how we are using it.• 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 Amity university rajasthan 25
  26. 26. Bibliography• en.wikipedia.org/wiki/Mobile_phone_jammer• Multitopic Conference, 2008.INMIC 2008.IEEE International• www.HowStuffWork.com/• Ahmed Jisrawi, "GSM 900 Mobile Jammer", undergrad project, JUST, 2006.• Sami Azzam, Ahmad Hijazi, Ali Mahmoudy. ”Smart Jammer for mobile phone systems” Amity university rajasthan 26
  27. 27. Contd. Bibliography• Mobile & Personal Communications Committee of• the Radio Advisory Board of Canada, “Use of• jammer and disabler Devices for blocking PCS,• Cellular & Related Services”• "Zone of silence [cell phone jammer]," Spectrum, IEEE , vol.42, no.5, 18, May 2005 Amity university rajasthan 27
  28. 28. THANK YOUAmity university rajasthan 28