- Recherche et sélection de publications
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Mutual Coupling Modeling and Calibration in Antenna Arrays for AOA Estimation
- Tien Tu Vo #1, Laurent Ouvry #1, Alain Sibille #2, Serge Bories #3
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| #1 |
Laboratoire d'Electronique et des Technologies de l'Information (LETI)
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| #2 |
Laboratoire traitement et communication de l'information (LTCI)
- Télécm ParisTech
- Institut Mines-Télécom
- Université Paris-Saclay
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| #3 |
CEA - LETI (CEA - LETI)
- Université de Franche-Comté
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- References
- AT-RASC, Gran Canaria, Spain, IEEE, May 2018,
- Abstract
In antenna arrays, mutual coupling is an undesired effect
which degrades the array pattern and the performance of array signal-processing algorithms like for Angle-Of-Arrival
(AOA) estimation. Various approaches for mutual-coupling
compensation that evaluate the coupling in receiving and
transmitting modes have been studied. In this paper, a definition of the mutual coupling in receiving mode from the
scattering parameters is introduced. A dissimilarity factor
is added on the signals after the coupling calibration to
simulate amplitude and phase variations at the termination
of array elements. The coupling model shows the role of
antenna characteristics and distance between the elements.
When the antennas are all connected to a matched load and
there is no dissimilarity between the antennas, the coupling
in the receiving mode assimilates to that in the transmitting mode. To validate this statement, the coupling of an array of two patch antenna elements in these two modes is calculated, which shows an adequate agreement. A simplified technique calibrating the coupling and the dissimilarity is also proposed. The application of these couplingcalibration techniques together shows many possibilities to improve antenna arrays processing.
- Keywords
- Antanna array, calibration, direction of arrival, ultrawideband
- Category
- Paper in proceedings
- Research Area(s)
- Computer Science/Networking and Internet Architecture
Engineering Sciences/Electromagnetism
- Identifier(s)
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Bibliographic key TTV:AT-RASC-2018
- Export
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- Last update
- on june 27, 2018 by Alain Sibille
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