With the gradual development of modern science, our daily lives have been enriched. Just like the 5G mobile phones that everyone is using now, 5G has brought people a smoother network, but this has caused many unnecessary problems, such as the data signal is getting better and better. What should be done with these special areas such as testing, which are power areas that need to shield signals? Is there no future for full-band signal jammers?
1. In professional terms, the shielding of data signals is actually just a small branch in the wireless network information content shielding system. Its essence is electronic countermeasures, or it is called same-screen interference, that is, using the device to transmit high-frequency signals through the wireless antenna, so that the mobile phone will generate errors after receiving the downlink data signal and cannot recognize and access it. The mobile phone shows that the network cannot be connected and the signal cannot be shielded.
2. For full-band signal jammers, it is known that it is necessary to interfere with the downlink, but mobile 4G and 5G do not distinguish between uplink and downlink. Due to the limitations of a series of factors such as cost, price, and manufacturing, it is difficult to only interfere with the downlink. Therefore, some illegal personnel do not make precise frequency scale adjustments in order to ensure the shielding effect, resulting in a certain amount of interference energy on the uplink. This can indeed further increase the scope of interference and have a counterproductive effect, but it sacrifices everyone's rights and interests.
3. The signal may have a large change in different positions and at different times in the same room. According to actual experience, it can reach about 10dBm. In terms of conversion pass rate, it is 10 times different. It is not difficult to see that mobile phone signal shielding is actually a project with relatively high capacity requirements, and it is not simply a matter of purchasing a full-band signal blocker for phone to solve it.
4. In special venues, when signal shielding is required under large-scale chaotic conditions, the gain antenna scale shielding combined with the small-scale leakage antenna filling and enhancement method should be used for shielding. The focus of the antenna and the power of the full-band signal blocker require professional personnel to adjust the equipment. The short-term signal shielding in the school can adopt high-quality low-power full-band signal blockers or temporary wiring antennas.