Shulou(Shulou.com)11/24 Report--

CTOnews.com February 14 news, according to the China Coal Science and Industry Corporation news, recently, the coal industry's first "OTA radio frequency laboratory" in the China Coal Science and Industry Group Coal Science and Technology Institute completed and put into application.

The establishment of the laboratory fills the gap in the methods and means of aerial 3D radiation performance testing of 5G equipment used in mining industry, and indicates that the coal industry already has the radio frequency emission analysis and verification capability of antenna, terminal and base station equipment of underground 5GNR, WiFi and other wireless products, which will play a great role in promoting and promoting the application of 5G wireless communication technology and equipment in coal mine.

▲ radiation conduction and harmonic flicker and other comprehensive test equipment OTA analysis and verification, according to Tu Yuan China Coal Science and Industry Group, OTA (Over-The-Air) radio frequency test system can test the aerial 3D radiation performance of wireless equipment, which is mainly used to verify the "radiation emission power" and "radiation reception sensitivity" of products in three-dimensional space, which is the standard test method of radio frequency performance.

Through OTA passive (Passive) and active (Active) testing, the radiated interference inside the product, product structure, antenna direction, RF chip transceiver algorithm and other factors can be taken into account, which provides the basis and direction for product RF performance design and optimization. The establishment of OTA radio frequency laboratory is of great significance to the radio frequency performance evaluation and performance design improvement of underground wireless communication products, especially 5G and WiFi 6 related technology products.

▲ antenna pattern, according to CTOnews.com query of China Coal Science and Industry Group, the "OTA Radio Frequency Lab" is one of the key technical equipment in the National Development and Reform Commission's "Safety access Analysis and Verification Laboratory of New Mining equipment and New Materials" undertaken by the National Development and Reform Commission, and it is a single-ring multi-probe anechoic chamber of 5m*5m*5m, which has the technical advantages of high repeatability, high accuracy and high resolution. With the in-depth development of coal mine intelligence, it will provide important technical support for the standard revision, performance analysis and verification of wireless technology equipment such as underground wireless intelligent terminals and intelligent base stations in the future.

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