Browsing by Author "Uzma Qaiser Ali"

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    Mobile phone jammer
    (2009) Mohsin Parvez; Naeem Ashfaq Qureshi; Uzma Qaiser Ali
    In our day to day life, the usage of cell phones has increased enormously. So at present, silence and security are a major concern in examination halls, auditoriums, conference halls, meetings etc; so we attempt to implement the Mobile Phone Jammer. Mobile Phone Jammer is a device which allows to block or jam all the incoming and outgoing calls and SMS within a specified area. It does not have any direct connection with the cell phone. It works on the same frequency band of which the cell phones operate. Our basic aim was to block all the incoming signals from BTS of a service provider. To do that we had to make a circuit, this could produce frequency equal to that of a BTS. For all this power control was the basic parameter to make jamming successful.