Why can a mobile phone signal jammer interfere with your mobile phone signal?
The reason why a mobile phone signal blocker can interfere with your mobile phone signal is mainly based on the principles of wireless communication and electromagnetic wave interference. The specific reasons are as follows:
Mobile phones communicate with base stations through radio waves
Data and sound are transmitted between mobile phones and base stations through electromagnetic waves within a specific frequency range. Mobile phones need to receive signals from base stations at these frequencies to complete calls and data transmission.
Signal jammers emit "interference signals" of the same frequency band
Signal jammers emit radio frequency signals with the same frequency band as mobile phone communication. These interference signals will confuse mobile phones, making it impossible for mobile phones to distinguish between normal base station signals and interference signals, resulting in the mobile phone not receiving effective information.
The "noise" generated by the jammer covers the base station signal
When the jammer emits a large number of "noise" signals, the base station signal received by the mobile phone is submerged and cannot establish a connection with the base station, showing "no signal", "no service" or "searching network" and other states.
Multi-band, multi-standard simultaneous interference
Modern jammers cover multiple mobile communication frequency bands such as 2G, 3G, 4G, and 5G through frequency doubling, frequency division, and frequency hopping filtering technologies. At the same time, they can also expand to cover wireless frequency bands such as WiFi and Bluetooth, achieving comprehensive interference with multiple wireless signals.
Scanning fast cycle interference
The jammer scans multiple signal frequency bands at high speed, forming continuous interference, making it almost impossible for the mobile phone to communicate normally, thereby forcing the mobile phone to "fail".
In summary, the cell phone signal jammer is to block the normal communication between the mobile phone and the base station by emitting strong interference signals within the mobile phone communication frequency range, so that the mobile phone temporarily loses the ability to connect to the network. This is why examination rooms, meetings, etc. need to maintain a quiet and safe environment, and mobile phone signal jammers are used to prevent cheating and information leakage.
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