Identifying Defective Single Elements in Antenna Arrays
App Note Overview
Due to their beamforming properties and high directionality, antenna arrays play a critical role in today’s 5G infrastructures, making it possible to transmit extremely high amounts of data with ultra-reliable low latency communications in 5G. However, antenna arrays are often complex to design and produce due to issues, such as phase errors in planar designs where RF substrate parameters vary over different production units.
This application note by Rohde & Schwarz shows how to identify individual defective elements in magnitude and phase within an antenna array using a R&S®ZVA vector network analyzer equipped with the R&S®AMS32 OTA performance measurement software. The setup makes it possible to perform near-field to far-field transformations based on the fast irregular antenna field transformation algorithm (FIAFTA) used in R&S®AMS32.