What is AAT?
AAT (Antenna Array Tool) is a software tool used to embed antenna parameters and radiation patterns into test scenarios for 5G NR device and base station testing. It enables engineers to model realistic antenna behaviour — including beamforming patterns, polarization, and gain characteristics — within simulation and over-the-air (OTA) test environments. AAT is particularly critical at mmWave frequencies, where antenna arrays are tightly integrated into devices and cannot be tested through traditional conducted methods.
How Does AAT Work?
AAT ingests antenna design data such as gain tables, phase offsets, and element configurations, then applies these parameters to generate 3D radiation patterns. These patterns are embedded into channel models used in test systems (e.g., CATR, NFTF chambers) to replicate how an antenna array would perform in real-world conditions. The tool accounts for mutual coupling between elements, beam squint effects, and polarization mismatches across the array.
Use Cases
5G NR device certification testing, mmWave OTA performance validation, beamforming verification in anechoic chambers, antenna design optimization for massive MIMO base stations, and conformance testing against 3GPP and CTIA requirements.
3GPP / Standards Reference
3GPP TR 38.810 (Study on test methods for NR), 3GPP TS 38.141 (NR base station conformance testing)
Related Terms
Beamforming | CATR | CSI | NFTF | FR2
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This glossary entry is part of the 5GWorldPro Complete 5G Glossary. To go deeper into 5G architecture and technology, explore our 5G Training courses.
