Direct Deterministic Nulling Techniques for Large Random Arrays Including Mutual Coupling
(2018) IEEE Transactions on Antennas and Propagation — Vol. 66, n° 11, p. 5869-5878 (2018)
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- Authors
Bui Van Ha, undefined 
de Lera Acedo, Eloy
- Abstract
- Effective approaches for interference nulling in large random planar arrays are presented. Starting from the,well-known subtraction technique, it is shown that the suppression is only effective when the mutual coupling is taken into account. Moreover, for practical antennas with significant cross-polarization levels, additional efforts are required to null interference in both co- and cross-patterns. Alternative techniques are proposed to efficiently generate null patterns that are able to suppress interferers from the output of the beamformer of large arrays. In particular, a technique exploiting the polarization diversity of modern multiantenna systems is proposed to effectively suppress a large number of interferers while offering high sensitivity. Examples related to SKA1-LOW stations are presented to illustrate the performance of these techniques. Throughout these examples, the embedded element patterns obtained using fast full-wave simulation techniques are exploited to fully account for the effects of mutual coupling.
- Affiliations
Citations
Bui Van Ha, u., Hamaide, V., Craeye, C., Glineur, F., & de Lera Acedo, E. (2018). Direct Deterministic Nulling Techniques for Large Random Arrays Including Mutual Coupling. IEEE Transactions on Antennas and Propagation, 66(11), 5869-5878. https://doi.org/10.1109/tap.2018.2869068 (Original work published 2018)