The shielding box is a shielding body of various shapes made of conductive or magnetic conductive materials, which limits the electromagnetic ability within a certain space range, and is a metal body used to suppress radiation interference. And deal with the conduction and radiation, so as to realize the equipment that provides a non-interference test environment for the wireless communication equipment under test.
Application of shielding box
For manufacturers of wireless communication products, the failure of the products to come to market in time or the rapid increase in volume will result in the loss of a large amount of output value and profits. Directly affect the follow-up business and market share expansion.
The radio frequency test process is usually a complicated and influential process in the production line of wireless communication equipment such as mobile phones, and it is usually the bottleneck of the production line. The radio frequency test station is usually composed of test instruments, shielding boxes, test software, etc., and usually can be divided into calibration test, comprehensive test, antenna test and so on. Due to production capacity requirements, the RF test process is usually run in parallel by multiple identical test stations. The pass rate of one or some test stations is low; lower output will lead to bottlenecks in the production line and a sharp increase in production costs. The reasons can be roughly divided into: product design or material reasons, test problems (errors) Test problems), environmental factors such as radio frequency interference, and uncertain problems in the test.
Electromagnetic interference/EMI is a problem that must be faced and overcome in the entire electronic field, generally in wireless communication products such as: mobile phones, wireless network cards, wireless routers, wireless headsets, Bluetooth headsets, wi-fi, wimax, data cards, walkie-talkies, RFID, etc. In the process of board testing and final testing, such as wireless communication equipment and wireless communication modules, they all use radio frequency test shielding boxes to improve the test environment.
Shielding box function
1. Isolate external base station signals and external interference signals.
2. Absorb the radio frequency signal in the box to reduce interference.
3. Reduce the impact of personnel and make the test more accurate.
4. Save operation time and improve work efficiency.
5. Isolate the interference of adjacent test equipment.
6. The integration of multiple testing procedures, simplifying procedures and improving efficiency.