What is the working principle of the wireless wifi signal jammer?
The development of communication technology is getting faster and faster, among which 5G technology has basically been popularized in recent years, but what is the working principle of wireless wifi signal jammer?
The working principle of mobile communication technology is that within a certain frequency range, the transmitting wireless network equipment and the base station are connected according to electromagnetic waves, and data and sound are transmitted with a certain serial port baud rate and modulation mode. The mobile phone can work normally because the base station sends out the working frequency to contact the base station, but if there is a voice call request, first, according to the request report, according to the specific conditions of the surrounding channels of the terminal equipment, it is allocated to the mobile phone business process channel, so that the mobile phone jumps to the business process Voice communication and data transmission can be realized on the channel. At the same time, wireless communication must ensure sufficient frequency stability for better reception and communication.
According to the above principles, several modules of the wireless wifi signal jammer are composed of switching power supply, scanning control module, segmented radio frequency module, amplifier module, transmitting antenna unit and other parts. After the scanner signal sent by the signal jammer passes through the inverter, it enters the oscillator and is allocated to the working frequency band of mobile communication technology, and then the output power is enlarged by the power amplifier circuit and the voltage regulator tube is manipulated. After the enlargement, the frequency deviation signal is converted into an electromagnetic wave way into the air. Due to the error code interference caused by the frequency offset signal in the message format signal received by the mobile phone (increasing the noise signal ratio to the threshold of the machine equipment), the mobile phone cannot receive the normal data information sent by the base station, so that the mobile phone cannot establish a normal connection with the base station , so that the mobile phone can get rid of the base station communication network. The mobile phone is reflected in the phenomenon of no signal and no service system when searching the Internet, so as to achieve the blocking effect.
The working principle of the wireless wifi signal jammer is to pass the low-level working frequency of the channel to the high-end scanner at a certain speed during operation. This scanning speed can also cause error code interference in the signal received by the mobile phone. The mobile phone cannot detect the normal data information transmitted from the base station, so that the mobile phone cannot establish a connection with the base station, so as to achieve the effect of shielding the mobile phone signal. It is reflected in the phenomenon of network search, no signal, and no service system.
The interference output power of the wireless wifi signal jammer is constant, and the shielding radius of the unobstructed space is determined by the path loss and the reception of the base station signal pulse signal. In order to realize that the mobile phone signal jammer interferes with the mobile Internet, it is necessary to ensure that the field strength of the signal sent by the jammer exceeds the field strength of the mobile signal in the interference area. The closer the interference address is to the base station, the higher the field strength and the lower the reasonable interference area. On the contrary , the farther the interference address is from the base station, the weaker the field strength is, and the more reasonable interference areas are.
It is not difficult to see that within a certain signal strength, the scope of interference lies in the field strength in the interference area. No matter how powerful a wireless wifi signal jammer is, as long as the signal strength is a time constant, as the distance increases, the compressive strength of the interference signal will increase. Will gradually wear out, and then lose the interference level. A comparison table of spacing and path loss is presented below. Then the wireless wifi signal jammer derives the channel output power, base station signal pulse signal, and coverage line gain value to determine the theoretical coverage radius with practical value.
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