Nowadays, smart phones are all analog signals, and analog signals have strong anti-interference ability. Generally, pulse signals are used to influence the analog signal. The actual effect of the analog signal is weak. Therefore, it is necessary to apply analog signals to affect the analog signals. The same output Power data electromagnetic interference and simulation simulation electromagnetic The actual effect of interference on smart phones is quite different. The use of data electromagnetic interference technology Make A Cell Phone Jammer is lower in output Power and higher efficiency than the use of pulse signals to affect technical mobile phone jammers. The analysis of data signal and electromagnetic interference in the room, attenuation coefficient, reflection surface, etc. is more complicated. cell phone jammer Before shielding, the compressive strength and quality of the local indoor space data signal are very harmful to the shielding. The actual effect on different mobile phones is also different. Generally, the actual effect of anti-interference on mobile phones that accept weak data signals and have strong working ability Not necessarily good.
The position of the communication base station and the angle of Make A Cell Phone Jammer area also jeopardize the actual shielding effect. The general indoor space receiving sensitivity is around -60 to -70dbm, and the communication base station can reach around -40dbm within a few hundred meters. The compressive strength range of mobile phones is generally in the middle of -35 to -95dbm. The higher the compressive strength of the indoor space data signal output Power , the smaller the shielding distance. The above is the result obtained based on the regularity of wireless communication data signal transmission in free space. In actual conditions, there are many obstacles that harm the transmission of electromagnetic waves on the road. Only the judgment is used as a reference, especially in the room. There is a huge gap between regularity and reality. Therefore, this problem is difficult to accurately measure for the time being, and it can only be clarified based on the specific conditions of the construction site. Precise construction projects must do early inspection and signal testing, and then design the actual solutions, follow up and detect immediately in the middle and later stages, and do certain corresponding fillings to ensure that it is foolproof, that is, to achieve the actual effect of strict shielding. .
