Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Mobile Jammer

ByRanavasiya Mehul

10BIT047

Department of Computer ScienceAhmedabad

April 14, 2013

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Contents

1 Design Parameters/Specification of mobile jammer

2 Block Diagram of Mobile Jammer

3 Cell Phone Jammer Applications

4 Alternatives to Cell Phone Jamming

5 Ways to avoid a mobile phone jammer

6 Bibliography

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Design Parameters/ Specification of mobile jammer :

The frequency bands

Distance to be jammed (D)

Jammingto-signal ratio (J/S)

Power calculations

Free space loss

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Jamming-to-signal ratio (J/S)

Figure: J/S Ratio

Where:Pj = jammer powerPt = transmitter powerGjr = antenna gain from jammer to receiverGrj = antenna gain from receiver to JammerGtr = antenna gain from transmitter to receiverGrt = antenna gain from receiver to transmitterBr = communications receiver bandwidthBj = jamming transmitter bandwidthRtr = range between communications transmitter and receiverRjt = range between jammer and communications receiverLj = jammer signal loss (including polarization mismatch)Lr = communication signal loss

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

FACTORS that affect both CELLULAR PHONERECEPTION and JAMMING:

Strength and location of the Cellular Base Station or Tower

Terrain and Topology

Weather and Climactic Conditions

Structures, Building Characteristic

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Block Diagram of Mobile Jammer:

Figure: Block Diagram

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Power Supply:

Figure: Power Supply

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

IF Section:

Figure: IF Section

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

RF Section:

Figure: RF Section

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Cell Phone Jammer Applications:

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 ofdirectors rooms,seminars, etc.

For providing calm and peaceful atmosphere in Hospitals.

Church/Mosques/Cathedral/Temple/Religious establishment.

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Cell Phone Jamming Legal Issues:

Since these jammers actively broadcast radio signals, they may ormay not be legal to possess or operate based on the specific lawsof the area one is in.

United States: Cell phone blocking devices are used by federalofficials under certain circumstances.

Germany: illegal, but installation in jails has been proposed.

India: legal, Government, Religious Places, Prisons andEducational Institutions use jammers.

Pakistan: It’s illegal to operate a jammer without the N.O.C.from Ministry of Interior and Ministry of Telecom.

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Future scope of Jamming Technology:

While the law clearly prohibits using a device to activelydisrupt a cell-phone signal, there are no rules against passivecell-phone blocking.

Companies are working on devices that control a cell phonebut do not ”jam the signal.

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Ways to Avoid a Mobile Phone Jammer:

Try making calls through internet.

Download Skype on your mobile phone to make calls.

Walk away.

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography

Bibliography:

http://electronics.howstuffworks.com/cell-phone-jammer.htm

http://blog.jammer-store.com/2009/11/how-mobile-jammers-work/

http://whatisacellphonejammer.com

http://en.wikipedia.org/wiki

http://www.phantom.co.il

Design Parameters/Specification of mobile jammer Block Diagram of Mobile Jammer Cell Phone Jammer Applications Alternatives to Cell Phone Jamming Ways to avoid a mobile phone jammer Bibliography