Evaluation of a Random Line-of-Sight Over-the-Air Measurement Setup at 28 GHz
Journal article, 2021

OTA measurement techniques have, and will continue to have, a key role in evaluating the performance of modern antennas and wireless devices. The new random line-of-sight (random-LOS) measurement setup, offers the evaluation of the OTA performance of different types of devices, for example car antennas and small wireless devices in the random-LOS environment. A plane wave is synthesized in the test zone of the OTA setup, where the far-field of a radio base station can be emulated. We present measurements and simulations of the random-LOS OTA measurement setup employing a reflector antenna, with a dual polarized linear array feed, operating at the 28 GHz band. An analysis of the power and phase field distributions in a cylinder and a circular test zone are presented. The computed standard deviation of the power distribution is approximately 1 dB within a circular test zone, with a diameter of 0.3 m. The standard deviation of the phase, within the same test zone, is less than 15 °. The radiation patterns of a horn antenna have been measured in the random-LOS measurement setup and shown a good agreement with the theoretical values.

reflector antenna

OTA

anechoic chamber

automotive communication

Random-LOS

Author

Madeleine Schilliger Kildal

RanLOS AB

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Sadegh Mansouri Moghaddam

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Jan Carlsson

RanLOS AB

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Provinn AB

Jian Yang

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

Andres Alayon Glazunov

Chalmers, Electrical Engineering, Communication and Antenna Systems, Antennas

University of Twente

IEEE Transactions on Antennas and Propagation

0018-926X (ISSN)

Vol. In Press

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TAP.2021.3076273

More information

Latest update

6/22/2021