WIRELESS SIGNAL JAMMER

In our day to day life, the usage of cell phones has increased enormously. So at present, silence and security are the need of hour in many places. This can be done by using cell phone jammers which blocks all the signals. This work presents the design of an enhanced technique for jamming the c

Project Title

WIRELESS SIGNAL JAMMER

Project Area of Specialization

Information & Communication Technology

Project Summary

In our day to day life, the usage of cell phones has increased enormously. So at present, silence and security are the need of hour in many places. This can be done by using cell phone jammers which blocks all the signals. This work presents the design of an enhanced technique for jamming the cell phone signals. Our main objective is to concentrate on a specific band of frequency, which makes the communication possible, by jamming this frequency we effectively blocks out the signals that are responsible for making calls. This method enables the jammer to be more precise and effective, so precise that it can focus on individual network and specific area. The major advancement will be that emergency services can be availed which is very crucial in case of any calamity and also it has a lesser power consumption than existing models. This technique has infinite potentials and sure can this be modified to match all our imaginations.

What is a jammer?" is a question many people are asking these days because of the fuss created, reported and covered by the media. To put it simply, a Jammer is, fundamentally, a signal blocking device, which transmits synchronized radio waves on the same frequency range of the device that one needs to blur, therefore preventing devices from transmitting data in the chosen area.

Cell phone jammer is an electronic device that blocks transmission of signals between a cell phone and a base station. By using the same frequency as a mobile handset, the cell phone jammer creates strong interference for communication between the caller and receiver. It is effective in blocking transmission of signals from networks. For example, if mobile phones at your area work at 450 MHz, you need to generate 450 MHz with some noise to act as the blocking signal. Now the cell phone receiver will not be able to understand, which signal to receive. We have successfully blocked cell phone signals.

Significance: An attacker with a radio transceiver intercepts a transmission, injects spurious packets, and blocks or jams the legitimate transmission. Jammers disrupt the wireless communication by generating high-power noise across the entire bandwidth near the transmitting and receiving nodes.

Project Objectives

Objective: The jammer plays an important role in effective jamming. Jammers can be placed randomly or can be placed based on a jamming technique which locates the best position to accomplish its objective of jamming with as many nodes as possible.

Our main objective is to concentrate on a specific band of frequency, which makes the communication possible, by jamming this frequency we effectively blocks out the signals that are responsible for making calls.

Areas of Development: They were originally developed for law enforcement and the military to interrupt communications by criminals and terrorists. Some were also designed to foil the use of certain remotely detonated explosives. The civilian applications were apparent, so over time many companies originally contracted to design jammers for government use switched over to sell these devices to private entities. Since then, there has been a slow but steady increase in their purchase and use, especially in major metropolitan areas.

To design Radio Frequency (RF), Intermediate Frequency (IF), and Power Supply circuit. To construct the Development of Wireless Signal Jammer for Security Application’s circuit.

· To construct the development of wireless signal jammer for security application’s circuit.

· To simulate Intermediate Frequency (IF) section circuit.

· To block mobile phones transmission by creating interference.

· To block amplitude modulated and frequency modulated signal transmission by creating interference within its range.

Project Implementation Method

The circuit will be designed to detect calling process and issues a warning signal to the control system to shift the jamming into power on mode. The circuit can sense the presence of an activated mobile phone from a distance of one and half meter. It can detect incoming and outgoing calls, Short Message Service (SMS) and multimedia data. The bug detects RF signal from an activated mobile phone, alarm beeps and Light Emitting Diode (LED) blinks. The alarm continues until the signal transmission ceases. The design consists of four stages; sensor stage (SS), power stage (PS), operational amplifier (OM) and response stage (RS). The RF antenna receives wireless signal when circuit is powered by 9 Volts DC battery. OM amplifies the received signal which in turn triggers the buzzer and makes the LED to flicker. Buzzer alarm continues until the signal transmission ceases. The construction was first done on a bread board and transferred on to a PCB. The OM IC chip (U1) was placed on board straddling the channel. Orientation of the chip was noted after which the variable resistor was placed with pins on separate rows. Centre pin of the variable resistor (R5) is connected to Pin 6 of the IC while Pin 4 of the IC is connected to the bottom left row. Several other locations will use this connection for ground. A 6.8 M? resistor (R2) and a capacitor (C1) are connected between Pin 3 and Pin 4 of the IC. It should be noted that Pin 4 is connected to ground. A capacitor (C2) is then connected between Pin3 and Pin 2 of the IC. A 6.8 M? resistor (R1) is connected between Pin 3 of the IC and bottom pin of the variable resistor. A wire is needed to make this connection. It should be noted that the bottom Pin1 of the variable resistor will be connected to the battery positive terminal. A 6.8 M? (R3) is also connected between Pin 1 and Pin 2 of the IC. One leg of the 1K? (R4) is connected to Pin 7 of the IC. Other leg of the LED is connected to Pin 8, and the short leg to the row above Pin 8. A wire is connected to the bottom right row to the long leg of the LED (Pin 8). One end of a long wire (antenna) is connected to Pin 2 of the IC.

Benefits of the Project

Jammer:

There are several purposes for which a jammer can be used. Let’s take a look at them:

Military purposes:

• Prevent terrorist attacks by means of remote-controlled bombs.
• Help disrupt any kind of enemy radio communication.

Civil and paramilitary purposes:

• Prevent bugs from transmitting data, therefore rendering them useless.
• Do not allow GPS locators’ transmission.
• Help achieve quietness and silence in a conference room during a meeting.
• Forbid your employees from making calls and sending text messages.

These are the only circumstances in which jammers MUST be used, and we only support and assist those who want to make the best out of our products and achieve good and genuine purposes.

There are many reasons for which a cell phone jammer can be used. Some of them can be used legally thanks to a permit from the local authorities and illegally (without a permit).

Legal use:

• classrooms , schools
• religious gathering places, places of worship
• theaters, cinemas
• libraries
• government authorities / offices
• military NAVY/ARMY/AIRFORCE
• workplaces

Illegal use:

• transportation
• any public places
• malls
• Restaurants etc.

The main point about the use of mobile phone jammers is that in case of emergency, they will block the GSM frequency required to make an emergency call. Plus, just because you’re fed up with people yapping on phones, it does not give you the right to jam their GSM signal.

So, while it may sometimes be annoying to listen to other people’s mobile conversations on the bus or train, a little consideration goes a long way.

For cell phone safety reasons, experts in communication via in-depth study of the device of utilizing electromagnetic technology finally found an effective means to block signal and prevent leak, developed signal jammers successfully. The advantages of using cell phone jammers are immense. In many countries, it is widely used for safety purposes. Jammers are the perfect example for advancement in contemporary digital communication expertise and electronic expertise. It is also prominent as a new digital integration technology. The modulation mode and wireless control are the major reason behind its rising popularity.

Signal blockers are even used in universities, schools, government agencies and prisons. Blocking conversation on these places cannot certainly become a distraction. On the contract, accused and students cannot cheat by contacting others or outsiders. Thus, the advantages of using cell phone jammers are immense. It has become a compulsory addition to high security areas like detention centers and prisons. It prevents illegal communication between visitors and inmates. Nowadays, it is even utilized in places like libraries and movie theaters. As a result, having a jammer can help maintain quiet atmosphere, prevent cheating and increase security. Keep in mind, signal jammers are not designed to harm or hurt general public. They give calm and peace to people.

Technical Details of Final Deliverable

The tuned circuit operation is very simple and easy to understand. When the circuit gets ON, the voltage is stored by the capacitor according to its capacity. The main function of capacitor is to store electric energy. Once the capacitor is completely charged, it will allow the charge to flow through inductor. We know that inductor is used to store magnetic energy. When the current is flowing across the inductor, it will store the magnetic energy by this voltage across the capacitor and will get decreased, at some point complete magnetic energy is stored by inductor and the charge or voltage across the capacitor will be zero.

Final Deliverable of the Project

Hardware System

Core Industry

Security

Other Industries

Education , IT , Petroleum , Food , Energy , Finance , Legal , Manufacturing , Transportation , Media , Others , Health , Security , Telecommunication

Core Technology

Others

Other Technologies

Artificial Intelligence(AI), Internet of Things (IoT), Augmented & Virtual Reality, Blockchain, Robotics, Cloud Infrastructure, Wearables and Implantables, Others, Clean Tech

Sustainable Development Goals

Good Health and Well-Being for People, Decent Work and Economic Growth, Industry, Innovation and Infrastructure, Reduced Inequality, Responsible Consumption and Production, Peace and Justice Strong Institutions, Partnerships to achieve the Goal

Required Resources

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