Distributed mobile phone signal jammer
A mobile phone signal and jammer technology, applied in the field of communication, to eliminate shielding blind spots, improve shielding effects, and solve mutual excitation problems
Active Publication Date: 2018-11-27
TRANSCOM INSTR
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Problems solved by technology
[0003] These products have such defects: limited by the transmission power, the effective suppression range of a single device is only about 20m, and when the space to be shielded is large, multiple devices need to be used at the same time
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[0023] In order to describe the technical content of the present invention more clearly, further description will be given below in conjunction with specific embodiments.
[0024] see Figure 2 to Figure 4 As shown, the present invention can solve the problem of mutual excitation between devices by identifying the characteristic suppression signal; the working principle of the distributed mobile phone signal jammer is as follows: figure 2 As shown, after the existing envelope detection and interference signal sources, signature monitoring and modulation modules are respectively inserted. In this way, a distributed signal jammer without self-excitation phenomenon can be realized through reasonable design of signature codes, modulation and monitoring modules.
[0025] 1. Feature code, please refer to image 3 Shown:
[0026] A. Modulation method: Since the system uses the envelope detection method, the signature code is applicable to the amplitude modulation method.
[0027...
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The invention relates to a distributed mobile phone signal shielding device. The distributed mobile phone signal shielding device comprises: an input end of a receiving channel is used for receiving mobile phone signals or suppression signals, the first output end of the receiving channel is connected with the input end of an envelope demodulation module, the output end of the envelope demodulation module is connected with the input end of a feature code monitoring module, the output end of the feature code monitoring module is connected with a master controller, the second output end of the receiving channel is connected with the first input end of an emission channel and the master controller, the second input end of the emission channel is connected with the output end of the feature code modulation module, the input end of the feature code modulation module is connected with the output end of an interference signal source module, and the emission channel outputs the suppression signals. By using the distributed mobile phone signal shielding device of such a structure, the problem of excitation between devices is solved, an infinite space scope can be effectively covered, through distributed arrangement, a shielding blind area can be effectively eliminated, and the shielding effect is improved.
Description
technical field [0001] The invention relates to the communication field, in particular to a mobile phone, in particular to a distributed mobile phone signal jammer. Background technique [0002] see figure 1 As shown, it is the basic working principle diagram of the mobile phone signal jammer in the prior art: monitor the transmitting frequency band of the mobile phone, and start the interference signal to suppress it when a signal exceeding the set threshold is detected. [0003] These products have such defects: limited by the transmission power, the effective suppression range of a single device is only about 20m, and when the space to be shielded is large, multiple devices need to be used at the same time. In this scenario, when one (or more) of them detects the signal and starts to suppress it, because the interference signal is in the same frequency band as the mobile phone signal, other devices will detect the suppressed signal and start to suppress it. This mutual ...
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IPC IPC(8): H04K3/00
CPCH04K3/40H04K3/44
Inventor 刘智锋
Owner TRANSCOM INSTR