![]() Conference room, autitoriums, law court, library, exam room, school, cinema, theater, and hospital, etc.ģ. ![]() Places of Worship, mosques, shrines, churches, temples, etc.Ģ. The Mobile phone signal isolator will make effect only on the communication of mobile phones, instead of on other electronic devices and human bodies.ġ. DescriptionĪlong with the high speed development of mobile communication cause, the sharp increase of mobile phone quantity, when promoting economic development, social progress, it is more and more serious that the noise pollution of mobile phone manufacturing also becomes In meeting room, court, hospital, arenas, library, school, the noise corrupted of mobile phone original peace and quiet, serious atmosphere, influenced normally carrying out of these place activities Utilize the behavior of mobile phone cheating day by day savage in the examination hall Because of the random use of mobile phone, can cause fire or blast in places such as gas station, oil depots, cause enormous economic loss And utilize mobile phone or other mobile communication equipment to detonate the device, and destroy the military and civilian facility, become the means that terrorist, hostile force and criminal offender use always Simultaneously, relating to secret places such as politics, economy, military affairs, also be difficult to avoid because of using mobile phone to cause to divulge a secret.This will bring serious consequence difficult to the appraisal to party and state.Ĥ, a kind of mobile phone signal isolator according to claim 1 and 2, it is characterized in that: oscillatory modulation circuit adopts the NPN pipe to do oscillating tube, do modulation with variable capacitance diode, the triangular signal of three signal sources is modulated to 850MHz~890MHz, 930MHz~970MHz, 1800MHz~1920MHz respectively.This product is suitable for where forbid to use mobile phone. The utility model produces a related signal in the working frequency range of CDMA800MHz, GSM900MHz, DCS800MHz and PHS1900MHz, breaking the radio channel connection between a mobile station (such as mobile phones) and a base station, and thereby cutting off outward information dissemination of the mobile station (such as mobile phones). The mobile phone signal isolator comprises a signal source circuit producing signal source, an oscillating modulation circuit which receives the signal source and adjusts the signal source to a working frequency range, an amplifying circuit which amplifies signal power, and a signal radiation circuit which transmits the working frequency range. The utility model relates to a radio communication signal jamming device, which exactly means to overcome the condition of using mobile phones to interfere and disrupt social order and public security as well as activities of state interests, and providing a mobile phone signal isolator which is capable of effectively cutting off the mobile phone signal in particular range. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by CHENGDU LIXIN NEW TECHNOLOGY CO LTD filed Critical CHENGDU LIXIN NEW TECHNOLOGY CO LTD Priority to CNU032343930U priority Critical patent/CN2615985Y/en Application granted granted Critical Publication of CN2615985Y publication Critical patent/CN2615985Y/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Original Assignee CHENGDU LIXIN NEW TECHNOLOGY CO LTD Priority date (The priority date is an assumption and is not a legal conclusion. ![]() Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Inventor 景晓斌 Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number CNU032343930U Other languages Chinese ( zh) ![]() ![]() Google Patents Cell phone signal isolatorĭownload PDF Info Publication number CN2615985Y CN2615985Y CNU032343930U CN03234393U CN2615985Y CN 2615985 Y CN2615985 Y CN 2615985Y CN U032343930 U CNU032343930 U CN U032343930U CN 03234393 U CN03234393 U CN 03234393U CN 2615985 Y CN2615985 Y CN 2615985Y Authority CN China Prior art keywords signal circuit mobile phone signal source frequency range Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents CN2615985Y - Cell phone signal isolator ![]()
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