Measurements and Simulations for Validation of the Random-LOS Measurement Accuracy for Vehicular OTA Applications

Over-the-air (OTA) measurement techniques are essential to verify the performance of antennas and wireless devices. The random line-of-sight (random-LOS) measurement setup offers the advantage to test the OTA performance of antennas mounted on cars in existing, or new, semianechoic chamber and full-...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2018-11, Vol.66 (11), p.6291-6299
Main Authors: Kildal, Madeleine Schilliger, Carlsson, Jan, Alayon Glazunov, Andres
Format: Article
Language:English
Subjects:
Anechoic chamber (AC)
Anechoic chambers
Antenna arrays
Antenna measurements
Antennas
Automobile industry
Automobiles
automotive communication
Automotive engineering
Dipole antennas
Dual polarization (waves)
Far fields
Line of sight
Linear antenna arrays
Measurement techniques
over-the-air (OTA)
Performance evaluation
Planar arrays
Plane waves
Radio equipment
random line-of-sight (random-LOS)
Simulation
Standard deviation
Wireless communications
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Summary:Over-the-air (OTA) measurement techniques are essential to verify the performance of antennas and wireless devices. The random line-of-sight (random-LOS) measurement setup offers the advantage to test the OTA performance of antennas mounted on cars in existing, or new, semianechoic chamber and full-anechoic chamber. Hence, reusing currently available infrastructures together with a cost-efficient measurement setup will reduce OTA costs for the automotive industry. In random-LOS, a plane wave is synthesized in the test zone, where the far field of a radio base station is emulated. We present measurements and simulations of a random-LOS OTA setup operating at the 2.7 GHz band. We compare the cases when the emulated base station signals are generated by a single dual-polarized bowtie antenna, a uniform linear array of bowties and a uniform planar array of bowties. The evaluation of the standard deviation of the reference received signal in the test zone shows good agreement between measurements and simulations. We show with measurements that for a test zone with a radius of 0.5 m, the standard deviation can be less than 0.8 dB for the analyzed random-LOS OTA setup.
ISSN:0018-926X
1558-2221
1558-2221
DOI:10.1109/TAP.2018.2869133