What factors affect the shielding effect of full-band jammers?
Full-band jammers are used to shield mobile phone signals, and are generally used in confidential meeting rooms, standardized examination rooms, prisons and other places. So what are the factors related to the shielding effect of full-band jammers?
(1) Transmitting power of the full-band shielding instrument
Full-band jammers can be divided into high-power, medium-power, and low-power machines. The greater the power, the greater the shielding distance. For places with relatively strong signals, or places with indoor amplifiers, it is necessary to use high-power full-band jammers to shield mobile phone signals, and low-power machines generally have no obvious effect.
(2) Indoor and outdoor use are different
Indoor use and outdoor use will also affect the shielding distance of full-band signal blocker. In general, the shielding effect of the same machine indoors is better than that of the outdoors. In addition, the attenuation of the signal through the wall and the presence or absence of obstacles should be considered indoors. Outdoors, due to the direction, distance, and field strength difference of the base station, the shielding effect of full-band jammers will be affected.
Shielding material: The type, thickness, density and conductivity of the shielding material will all affect the shielding effect. In general, the thicker, denser, and better conductive the shielding material, the better the shielding effect.
Electromagnetic wave frequency: Electromagnetic waves of different frequencies have different effects on the shielding effect. Generally speaking, the penetrating power of low-frequency electromagnetic waves is relatively strong, and the shielding effect is poor, while the penetrating power of high-frequency electromagnetic waves is relatively weak, and the shielding effect is better.
Shielding structure: Different shielding structures have different shielding effects on electromagnetic waves of different frequencies. For example, for high-frequency electromagnetic waves, the shielding effect of a metal mesh structure is better than that of a solid metal plate.
The size and shape of the shield: The size and shape of the shield also affect the shielding effect of electromagnetic waves. For example, in some cases concave shields provide better shielding than flat shields.
The incident angle and polarization direction of electromagnetic waves: The incident angle and polarization direction of electromagnetic waves also affect the shielding effect. In some cases, changing the incident angle and polarization direction of electromagnetic waves can improve the shielding effect.
Therefore, when choosing a full-band shielding device, it is necessary to thoroughly analyze the combination of the environmental area of the shielding site, signal field strength, base station distance, and building structure, and recommend a suitable full-band shielding device for customers.
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