Intra-Array Coupling Estimation for MIMO Transceivers Utilizing Blind Over-The-Air Measurements
Paper in proceeding, 2019

A new technique for the estimation of coupling between array elements in MIMO transceivers is presented. The estimation method is founded on subsequent transmission and over-the-air (OTA) reception between the array elements, when the transmitter's characteristics are unknown. The method enables accurate on-line characterization of the behavior of the array in terms of coupling for a complete system with PAs and antennas connected. The method is validated via OTA measurements on a four-element array in a MIMO transmitter configuration. The results demonstrate that the estimated couplings with the proposed technique are similar to the ones obtained from S-parameter measurements with deviations reflecting the operation with antennas and PAs connected. The proposed intra-array coupling estimation facilitates practical OTA measurement-based modeling and linearization of MIMO transmitters.


mutual coupling

antenna coupling

behavioural modeling.

power amplifier

MIMO transmitter


Sara Hesami

Maynooth University

Sina Rezaei Aghdam

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Christian Fager

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Thomas Eriksson

Maynooth University

Ronan Farrell

Maynooth University

John Dooley

Maynooth University

IEEE MTT-S International Microwave Symposium Digest

0149645X (ISSN)

Vol. 2019-June 468-471 8700777
978-172811309-8 (ISBN)

2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Boston, USA,

Subject Categories

Fluid Mechanics and Acoustics

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering



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