University of Khartoum

Cellphone Jammer Circuit

Cellphone Jammer Circuit

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Title: Cellphone Jammer Circuit
Author: Saeed, Mohamed Omer Hassan
Abstract: This paper presents the design, implementation, and testing of a dual-band mobile-phone jammer. This jammer works at GSM 900 and GSM 1800 simultaneously and thus jams the four well-known carriers’ frequency in Sudan (Zain, Sudani and MTN). This paper went through two stages: Stage one: studying the GSM-system to find the best jamming technique, establishing the system design and selecting suitable components. Stage two: buying all the needed components, drawing the overall schematics, assembling the devices, performing some measurements and finally testing the mobile jammer. The designing stage consists of voltage controlled oscillator, noise generator and Radio Frequency Amplification. MATBLAB Simulink was used for the simulation of the frequency oscillator, On Running the simulation, and observing the output of the scope. We can see that the result must be a signal at frequency RF covers the whole downlink The designed jammer as supposed to be successful in jamming the Sudanese carriers operating on 1G or 2G networks
URI: http://khartoumspace.uofk.edu/123456789/25825
Date: 2017


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