Smart jamming device for LTE mobile phone

Abstract

The invention discloses a LTE mobile phone smart jamming device which comprises a signal processing and jamming generation module, a mobile communication transceiving module, first and second power amplifiers and a signal receiving and output module, wherein the signal processing and jamming generation module is used for carrying out processing on received LTE mobile communication signals in various frequency bands and in various systems and generating corresponding jamming signals; the mobile communication transceiving module is used for implementing monitoring on the LTE mobile communicationsignals in various frequency bands and in various systems by the signal receiving and output module, sending the monitored signals to the signal processing and jamming generation module and receivingthe jamming signals sent by the signal processing and jamming generation module; the first and second power amplifiers are used for carrying out power amplification processing on the jamming signalson the corresponding frequency bands; and the signal receiving and output module is used for outputting the amplified jamming signals and receiving the LTE mobile communication signals in various frequency bands and in various systems. The device has a good jamming effect and the device is also low in volume and weight.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a smart interference device for an LTE mobile phone. Background technique [0002] With the development of wireless communication technology, on the one hand, wireless frequency resources expand the range of frequency bands, and on the other hand, new technologies greatly improve the utilization rate of frequency bands. In the field of information security, mobile phone interference technology puts forward higher requirements. In particular, the development of public mobile communication 4G (FDD-LTE, TDD-LTE) technology has now spread to most cities. Due to the characteristics of 4G signal bandwidth, high spreading gain (strong anti-interference ability), and intelligent antennas, traditional Narrowband multi-carrier, frequency sweep and white noise interference signal generation technologies have been difficult to meet the requirements of 4G mobile phone interference. ...

AI Technical Summary

Problems solved by technology

[0004] Existing technical solution 1: use analog circuits to generate noise or sweep interference signals: for conventional narrowband signals, there is a certain interference effect, but for LTE signals (with wide modulation bandwidth), when the target signal modulation method and signal bandwidth cannot be obtained In this case, there is blindness, and it is difficult to obtain a good interference effect

[0005] Prior art scheme two: use DDS chips to generate interference signals; each DDS chip can only generate one interference signal, and if multiple signals need to be generated, a corresponding number of DDS chips is required. For LTE signals (with up to 1200 subcarriers), DDS is required There are many chips, and they are bulky and heavy, requiring high power and high cost, but the overall interference effect is not ideal

[0006] Existing technical solution 3: Use simple FPGA and other digital chips to generate multi-tone interference signals; the interference signals can be added with related modulation methods, but for LTE signals, the interference needs to be synchronized in timing to be effective, and the interference effect of conventional interference methods is poor

[0007] It can be seen that the traditional way of interference requires large power, resulting in bulky equipment, heavy weight, high cost, many antennas are required, and the interference effect is extremely poor. It is difficult to meet the current needs of flexible use, and it is extremely difficult to load

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