Advantages of Near-Field Measurement When Verifying 5G Antenna Designs

摘要

Over the air (OTA) measurements will play a vital role in 5G designs, in part because of the introduction of massive MIMO at microwave and millimeter wave (mmWave) frequencies and mobile terminal requirements for multiband and smaller size. The conventional far-field measurement (FFM) method requires large-scale measurement infrastructure and long measurement time. In addition, using FFM in the mmWave band suffers from low measurement accuracy caused by path loss due to the long transmission distance. A proposed near field measurement (NFM) method solves these problems and helps reduce measurement cost, making it a viable alternative in many applications, including antenna testing.