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Shield box and radio frequency attenuation control method

A technology of attenuation control and shielding box, applied in the direction of shielding materials, magnetic/electric field shielding, electrical components, etc., can solve the problems of narrowness, single shielding signal mode, and inability to limit the transmission distance of radio frequency signals, etc., to achieve low manufacturing cost and broaden the The effect of using the scope

Inactive Publication Date: 2019-03-01
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing radio frequency shielding transmission technology field, shielding boxes are generally used to isolate radio frequency signals. The existing shielding boxes can only completely shield radio frequency signals, but cannot limit the transmission distance of radio frequency signals. The shielding signal method is too single and narrow.

Method used

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  • Shield box and radio frequency attenuation control method
  • Shield box and radio frequency attenuation control method
  • Shield box and radio frequency attenuation control method

Examples

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Embodiment Construction

[0022] see Figure 1-2 , in one embodiment, a shielding box includes a box body 100, and an electronic device 200 can be placed in the box body 100. The box body 100 may be provided with a box cover (not shown) or not provided with a box cover according to actual conditions. The electronic device 200 can transmit and receive radio frequency signals (such as WIFI signals, Bluetooth signals, etc.). The box body 100 includes a wave absorbing layer 10 , a first metal layer 20 , a conductive cloth layer 30 , a second metal layer 40 and a third metal layer 50 from inside to outside.

[0023] The wave-absorbing layer 10 is used for refracting and absorbing the radio frequency signal, so that the radio-frequency signal is diffusely reflected and transmitted in the wave-absorbing layer 10 . The first metal layer 20 is used to slow down the transmission of the radio frequency signal. The conductive cloth layer 30 is used to form an electromagnetic field to further slow down the trans...

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PUM

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Abstract

A shield box includes a box body. The box body sequentially comprises a wave absorbing layer, a first metal layer, a conductive cloth layer, a second metal layer and a third metal layer from the inside to the outside. The invention also provides a radio frequency attenuation control method. The above-mentioned shield box and the radio frequency attenuation control method can limit the transmissiondistance of shielded radio frequency signals, and the manufacture cost is low.

Description

technical field [0001] The invention relates to the technical field of radio frequency shielding, in particular to a shielding box and a radio frequency attenuation control method. Background technique [0002] In the existing radio frequency shielding transmission technology field, shielding boxes are generally used to isolate radio frequency signals. The existing shielding boxes can only completely shield radio frequency signals, but cannot limit the transmission distance of radio frequency signals. The shielding method is too single and narrow. Contents of the invention [0003] In view of this, it is necessary to provide a shielding box, which can reduce the radio frequency transmission signal and limit the radio frequency transmission distance. [0004] An embodiment of the present invention provides a shielding box, including a box body. The box body sequentially includes a wave absorbing layer, a first metal layer, a conductive cloth layer, a second metal layer and...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/0049H05K9/0088H05K9/006G01R29/08H05K9/0007H05K9/0056H05K9/0073
Inventor 陈建维
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD