1 / 23

MOBILE JAMMERS

MOBILE JAMMERS. Submitted By: PVS Soumya [2/4] Sai Nandini T [2/4] GNITS GNITS. Contents. Introduction Basic Principle Types of mobile Jamming Mobile Jamming Requirements Components of GSM Mobile Jammer Applications Advantages Conclusion.

quinonez
Download Presentation

MOBILE JAMMERS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MOBILE JAMMERS Submitted By: PVS Soumya [2/4] Sai Nandini T [2/4] GNITS GNITS

  2. Contents • Introduction • Basic Principle • Types of mobile Jamming • Mobile Jamming Requirements • Components of GSM Mobile Jammer • Applications • Advantages • Conclusion

  3. MOBILE A BIG NUISANCE

  4. Polite requests asking people to put their mobiles ‘away’ • but many people don’t care looking at

  5. Basic Principle

  6. GSM 900 • Global System For Mobiles • Spectrum range: 890Mhz - 915MHz [uplink] 935Mhz 960MHz [downlink] • Introduced 2G mobiles • Security, Quality, Capacity and ability to support IC’s • Short message service [SMS]

  7. Types of Jammers • Type A -large number of oscillators -interferes large amount of communication spectrum • Type B -”Intelligent Cellular Disabler Devices” -detectors communicate with Base Station -prevent the authorization of call establishment

  8. Type C -”Intelligent Beacon Disablers” -compatible terminal is disabled -eg. blue tooth technology • Type D -jammer with a receiver -jams the signal only when there is link between the base station and the mobile -less electromagnetic pollution

  9. Type E -Faraday’s cage- blocks virtually all the EM waves -EMI sheilding techniques - EMI - Electro Magnetic Interface -”quiet conference rooms”

  10. Minimum Requirements of Mobile Jamming • Jammer power= signal power at the receive • Jamming to signal ratio (J/S) • Distance between jammer and receiver

  11. Frequency Hopping

  12. Frequency Hopping

  13. Components of Mobile Jammer • RF Section • Power supply • IF Section

  14. RF SECTION VCO RF POWER AMPLIFIER ANTENNA

  15. IF SECTION NOISE GENERATOR SIGNAL MIXER

  16. Power Supply TRANSFORMER RECTIFIER FILTER REGULATOR +9V REGULATOR -9V REGULATOR +5V

  17. Applications • Hostage Situations • During Drug raid • In potentially explosive areas

  18. A Pocket Sized Jammer

  19. 4 Frequency Band Jammer

  20. Military Jammers Very High Power Jammers

  21. Conclusions • High power and low power jammers • Variation in sizes • Easy to handle

  22. THANK YOU

  23. Any queries??

More Related