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In recent years, with the emergence of intelligent products and increasingly fierce competition, many terminal product manufacturers have higher and higher requirements for their own products. In addition to conduction testing, they have also begun to put forward OTA performance indicators for their own products.
This article will share with you the relevant content of OTA test in 5G era. The main contents of the article are as follows:
What is OTA testing?
02. The main measurement indicators of OTA.
03. The arrival of 5G has brought new challenges to OTA testing.
04. 5G era, how to easily deal with OTA test challenges
05. The process of OTA simulation using SystemVue software.
06. OTA simulation case
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What is OTA testing?
As the name implies, OTA test will simulate the scene of the product's wireless signal transmission in the air, and the test will be carried out by connecting the transmitting antenna or receiving antenna port of the test device to the test system through the wireless signal.
OTA testing can take into account factors such as internal radiation interference, product structure, antenna factors, RF chip transceiver algorithms, etc., and is very close to the actual use of the product.
Let's take the earliest 3G UE SISO OTA test as an example to understand the most basic environment required for OTA testing:
Absorbing anechoic chamber, turntable (control UE rotation)
Probe antenna (receives UE radiated signal at a fixed location)
Wireless test platform for providing probe antenna virtual base station signals (e. g. Keysight UXM series, not shown)
During the measurement, the radiation characteristics of the UE antenna in different directions will be controlled and measured by rotating the turntable.
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