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What are the factors that affect the isolation of the shielding box?

Author:admin   AddTime:2021-05-01

The shielding box controls the test shielding box through the international standard RS-232 interface in accordance with the communication instructions to complete the entire test process. Generally, it is used for small-scale radio frequency modules and large-scale production lines to improve production efficiency. What are the factors that affect the isolation of the shielding box?

1. Shielding box design

The design of the shielding cabinet is based on the design requirements of the fully automatic shielding box, plus the copper shrapnel to ensure the continuity of its conductivity and prevent the product surface finish and contact tightness from being affected. At present, there are many modes in the market: die-casting, casting, sheet metal welding, etc. Die-casting boxes can better ensure the adhesion of the material molecular gap and ensure better electrical continuity. Although gold welding omits the process of surface treatment, the isolation of the egg is likely to be reduced in terms of welding contact, and the requirement for butt processing is relatively high. Poor processing will affect the isolation of the shield, which is the service life. Therefore, it is also necessary to pay attention to the grounding of the cabinet design.



2. Shielding strip, beryllium, copper shrapnel
The shielding cabinet and the shielding box have a common requirement, that is, to ensure good electrical continuity can ensure a good shielding effect, not to mention that the efficiency of the shielding cabinet is higher than that of the shielding box. This just makes up for the integration of the new requirements of the shielding box on the contact surface of the upper and lower cover of the box. If other places are done well, the shielding effectiveness is relatively low.

3. The measuring equipment is made up of
Network analyzer [signal generator + spectrum analyzer], dipole horn antenna, shielding box.

Four, wave-absorbing rubber, sponge
The absorbing rubber and absorbing sponge are good materials for processing radiation. Generally, these two materials are used to make shields. And the cost is also low and affordable.

Absorbing Material:https://www.goodsmaterial.com/

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