Cell phone jammer ppt

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  • 1. Cell Phone Jammer Incorporated with Cell Phone Detector
    By
    ShishuPriyaDarshi
    2007EEC08
    Naresh Prasad
    2007EEC67
    Department of Electronics & Communication Engineering
    1
    Shri Mata Vaishno Devi University, Katra
  • 2. Contents
    Introduction
    Types of Jammer
    How Jammer Works
    What inside Jammer
    Applications of Jammer
    Future scope of Jamming Technology
    Cell Phone Detector Introduction
    Block Diagram
    Application
    Conclusion
    2
    Shri Mata Vaishno Devi University, Katra
  • 3. Cell phone jammers are devices that create a temporary "dead zone" to all cell phone traffic in their immediate proximity
    Introduction
    3
    Shri Mata Vaishno Devi University, Katra
  • 4. 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
    4
    Shri Mata Vaishno Devi University, Katra
  • 5. How Jammer Works
    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.
    .....Jamming basics....
    5
    Shri Mata Vaishno Devi University, Katra
  • 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.
    So Jammers work by either disrupting phone to tower freq.. or tower to phone frequencies.
    6
    Shri Mata Vaishno Devi University, Katra
  • 7. Design Parameters/ Specification
    The frequency bands
    Distance to be jammed (D)
    PjGjrGrj R2trLr Br
    Jamming–to-signal ratio {J/S}=
    PtGtrGrt R2jrLjBj
     
     
    Free space loss {F}= Path Loss (dB)= 32.44 + 20 log D(km) + 20log f(MHz)
    Power calculations
    7
    Shri Mata Vaishno Devi University, Katra
  • 8. Block Diagram
    If section
    Rf section
    Jamming signals
    Power supply
    8
    Shri Mata Vaishno Devi University, Katra
  • 9. Power supply
    Transformer
    Rectifier
    Regulator
    9
    Shri Mata Vaishno Devi University, Katra
    filter
  • 10. IF section
    Triangular wave generator
    Noise generator
    Mixer summer
    “Summer”
    10
    Shri Mata Vaishno Devi University, Katra
  • 11. Rf section
    Voltage Controlled Oscillator
    Power Amplifier
    Antenna
    11
    Shri Mata Vaishno Devi University, Katra
  • 12. 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
    12
    Shri Mata Vaishno Devi University, Katra
  • 13. 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.
    Shri Mata Vaishno Devi University, Katra
    13
  • 14. Cell phone detector
    Introduction
    Shri Mata Vaishno Devi University, Katra
    14
  • 15. Block Diagram
    15
    Shri Mata Vaishno Devi University, Katra
  • 16. Applications
    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.
    It is useful airport.
    It is useful in class rooms and examination hall.
    It is useful wherever cell phone can disturb.
    Shri Mata Vaishno Devi University, Katra
    16
  • 17. 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
    References
    [1] www.HowStuffWorks.com
    [2] en.wikipedia.org/wiki/Mobile_phone_jammer
    Shri Mata Vaishno Devi University, Katra
    17
  • 18. QUERIES
    Shri Mata Vaishno Devi University, Katra
    18
  • 19. Shri Mata Vaishno Devi University, Katra
    19