Mobile telephone signal isolator

Abstract

The signal isolator for mobile phone includes casing, external receiving antenna, external emitting antenna, electromagnetic signal receiver, electromagnetic interference signal emitter and control processor. The receiver consists of antenna, frequency selector circuit, filter, amplifier circuit, HF amplifier and detection circuit. The electromagnetic interference signal emitter consists of signal source circuit, vibrating and modulating circuit, amplifier circuit, power amplifying circuit, power indicating circuit and emitting antenna. The electromagnetic interference signal emitter and the receiver are connected to the control processor. The present invention adopts intermittent electromagnetic interference mode to block the channel connection between the mobile base station and the mobile phone in certain range and to disable the information transceiving function of mobile phone.

Description

technical field [0001] The invention relates to a wireless communication interference device, in particular to a mobile signal isolator for effectively shielding CDMA, GSM, DCS, PHS and SCDMA. Background technique [0002] With the rapid development of wireless communication technology, mobile phones have become an indispensable and important tool for people's daily life. But the widespread use of mobile phones has also produced some problems that cannot be ignored. It is very possible to use mobile phones to leak unit and personal secrets, and even party and state secrets; mobile phones gradually deteriorate the environment in quiet places such as conference rooms, courtrooms, libraries, wards, and scientific research rooms, becoming a new source of noise pollution, disturbing normal working order; in gas stations, gas stations, oil depots, gas depots, petrochemical plants and other places, fires or explosions caused by the use of mobile phones will cause serious casualtie...

AI Technical Summary

Problems solved by technology

It is very possible to use mobile phones to leak unit and personal secrets, and even party and state secrets; mobile phones gradually deteriorate the environment in quiet places such as conference rooms, courtrooms, libraries, wards, and scientific research rooms, becoming a new source of noise pollution, disturbing normal working order; in gas stations, gas stations, oil depots, gas depots, petrochemical plants and other places, fires or explosions caused by the use of mobile phones will cause serious casualties and economic losses; the phenomenon of using mobile phones to cheat in exams Also increasing; terrorists and hostile elements use mobile phones to detonate bombs, which adversely affects social stability

[0003] At present, the existing mobile phone isolating devices basically use the unified processing of received signals before sending out interference signals, and this type of mobile phone isolating devices are always in a continuous working state for the signal range that needs to be isolated. Since the interference signals are electromagnetic signals, Such interference signals may affect the work of other wireless devices (such as TV, wireless network, radio) and mobile base stations, so the radiation is strong, harmful to the human body, the interference radius is small and the range cannot be adjusted, and the shielding effect is not good

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