TY - JOUR
T1 - Evaluation of a Random Line-of-Sight Over-the-Air Measurement Setup at 28 GHz
AU - Schilliger Kildal, Madeleine
AU - Moghaddam, Sadegh Mansouri
AU - Carlsson, Jan
AU - Yang, Jian
AU - Alayón Glazunov, Andrés
N1 - Funding Information:
Manuscript received March 7, 2020; revised October 26, 2020; accepted December 29, 2020. Date of publication May 4, 2021; date of current version August 4, 2021. This work was supported by a grant from the Swedish Research Council VR through an Industrial Ph.D. Project. The project is called “Testmiljö för framtidens kommunikationssystem” under Grant D0571801. (Corresponding author: Madeleine Schilliger Kildal.) Madeleine Schilliger Kildal is with the Department of Electrical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden, and also with RanLOS AB, 436 34 Gothenburg, Sweden (e-mail: madeleine.kildal@ranlos.com).
Publisher Copyright:
© 2021 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
PY - 2021/8
Y1 - 2021/8
N2 - 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.
AB - 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.
U2 - 10.1109/TAP.2021.3076273
DO - 10.1109/TAP.2021.3076273
M3 - Article
VL - 69
SP - 5008
EP - 5020
JO - IEEE transactions on antennas and propagation
JF - IEEE transactions on antennas and propagation
SN - 0018-926X
IS - 8
M1 - 9423602
ER -