[elleparismaroc 2023] The first OTA radio frequency laboratory in the coal industry was built

Science and Technology Daily, Beijing, Feb. 14 (Reporter Liu Yuanyuan) A reporter from China Coal Science and Industry Group Co., Ltd learned on the 14th that the first OTA test (wireless aerial radiation test) was conducted in the Chinese coal industry. . A coal science academy was recently built and operated by the enterprise.

The completion of the laboratory fills a gap in how the industry tests the effectiveness of 3D radiation and means of extracting 5G equipment, demonstrating that the coal industry has radio frequency emission analysis of antennas, terminals and underground-based equipment. 5G NR, above. -Fi and other wireless testing capabilities will play an important role in promoting and accelerating the implementation of 5G wireless technology and equipment in underground coal mines.

The OTA radio radio frequency test system can test the 3D radiation performance of wireless devices in the air. It is mainly used to test the "radiation transmission power" and "radiation reception sensitivity" of products in a three-dimensional space. This is standard. How to test wireless radio frequency performance. Passive and active OTA testing can provide criteria and guidelines for designing and optimizing the performance of RF products. The establishment of OTA radio radio frequency laboratory is very important for evaluating radio frequency performance and improving the performance design of wireless communication products in coal mines, especially those related to 5G and Wi-Fi6 technologies.

"OTA Radio Frequency Laboratory" is said to be one of the key technical equipments of the National Development and Reform Commission in the "New Mining Equipment and New Material Safety Analysis and Testing Laboratory" project conducted by the Coal Science Academy. 5m×5m×5m units. The multi-angle fully anechoic camera has technical advantages such as high repeatability, high accuracy and high inspection efficiency. Along with the in-depth development of coal mine intelligence, it will provide important technical support for future standard development and revision, performance analysis and testing of wireless technology equipment such as intelligent wireless terminals and intelligent base stations in coal mines.