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Is it necessary to install a jammer in the shielded room?

Is it necessary to install a jammer in the shielded room?

  • 2022-08-24

There are many confidential units that need to be equipped with shielded rooms. The shielded room is to wrap an indoor space through various shielding materials, and various external wireless signals cannot penetrate the shielding materials, so as to achieve a certain shielding effect in the shielded room. Is it necessary to install a jammer?

Why do some shielded rooms need to install jammers? Obviously, this is because the shielding room does not have a complete signal shielding effect.

There are many reasons for this phenomenon. Part of the reason is that the shielding performance of the shielding material of the wall of the shielded room is not good, so that when the external wireless signal penetrates the wall, the wireless signal is not completely attenuated. Another part of the reason is that the shielding and isolation technology of the doors and windows of the shielded room is not in place, and the wireless signal can still transmit the signal to the inside of the room through these positions.

If the shielding performance of the shielding material selected in the shielding room is not good, or the construction process is not standardized, the wireless signal in the shielding room will not have a percent shielding effect. At this time, if a jammer is installed in the shielding room, it can make up for the defect that some wireless signals are not completely shielded.

However, the technical principle of using a jammer is essentially realized by the way of wireless signal interference of electronic instruments, which is essentially different from the way of completely isolating wireless signals by shielding materials.

The advantage of installing a jammer is that it can quickly solve the problem of incomplete wireless signal shielding, but the disadvantage is that the jammer is an electronic product after all, and it needs long-term power supply to ensure its continuous function. The shielding effect will be lost. Moreover, the types of wireless signals that the jammer can target are not all frequency bands, which depends on which frequency band signal shielding modules the shielding device itself has.

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