Directional wireless shielding system based on small-angle antenna

A shielding system and small-angle technology, applied in the direction of communication interference, electrical components, etc., can solve the problem of low cost performance and achieve the effect of avoiding impact

Inactive Publication Date: 2014-03-19
谢方军
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Problems solved by technology

At present, most of the shielding systems used in various fields adopt the shielding system of frequency sweep technology, which shields a certain area, has the defect of frequency drift, and is not cost-effective

Method used

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  • Directional wireless shielding system based on small-angle antenna

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Embodiment Construction

[0017] With reference to the accompanying drawings, the preferred embodiments of the present invention are described in detail as follows.

[0018] A directional wireless shielding system based on a small-angle antenna, characterized in that the directional wireless shielding system as a whole is controlled by the MCU module 1 to control the internal and external communications of the system, and the MCU module 1 controls the signal generators 21, 22, 23 through the control line and monitors them in real time The generation dynamics of its interference signal, signal generator 21 is connected power amplifier 31 and 32 by data line, signal generator 22 is connected power amplifier 33 by data line, signal generator 23 is connected power amplifier 34 by data line, MCU module 1 monitors in real time The interference signals output by the power amplifiers 31, 32, 33, and 34 are amplified live and stored and recorded. The power amplifier 31 is directly connected to the directional an...

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Abstract

The invention discloses a directional wireless shielding system based on a small-angle antenna. The directional wireless shielding system is characterized in that an MCU module controls signal generators, supervises the generation state of interference signals and monitors the amplification state of the interference signals outputted by power amplifiers, an interference signal with the frequency of 1000MHz is generated by the same signal generator, an interference signal with the frequency larger than 1000 MHz is generated by the combination of a plurality of signals through a combiner. The technology that a directional antenna PORT carries out broadband directional emission is employed by the directional wireless shielding system, both the radiation horizontal and vertical direction angle are smaller than 30 degrees, the spot jamming is carried out through the digital phase locked loop technology, and combined with a noise modulation mode, the communication of CDMA800, GSM900, DCS1800, TDS-CDMA, CDMA2000, WCDMA and WIFI frequency bands in a directional area is interfered. The digital spot jamming can be employed, and the energy efficiency ratio is high.

Description

technical field [0001] The invention relates to the field of wireless shielding, and proposes a directional wireless shielding system based on a small-angle antenna, which can be used for directional shielding of portable public wireless Internet access frequency bands. Background technique [0002] With the advancement of science and technology, communication technology is widely used in various fields (such as transportation, industrial sites, satellites, teaching, etc.), which has greatly changed people's lives. Wireless communication technology has developed rapidly under the leadership of China Mobile, China Telecom, and China Unicom, making it possible to connect to the Internet anytime, anywhere. The frequency bands used in its communications mainly include CDMA800, GSM900, DCS1800, TDS-CDMA, CDMA2000, WCDMA and WIFI frequency bands, etc. While wireless communication technology brings benefits to life, it also brings its disadvantages. For example, students can use m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04K3/00
Inventor 谢方军
Owner 谢方军
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