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Computer Science > Information Theory
Title: Trade-off Between Optimal Efficiency and Envelope Correlation Coefficient for Antenna Clusters
(Submitted on 2 May 2023 (v1), last revised 8 Dec 2023 (this version, v2))
Abstract: This paper introduces a theory for assessing and optimizing the multiple-input-multiple-output performance of multi-port cluster antennas in terms of efficiency, channel correlation, and power distribution. A method based on a convex optimization of feeding coefficients is extended with additional constraints allowing the user to control a ratio between the power radiated by the clusters. The formulation of the problem makes it possible to simultaneously optimize total efficiency and channel correlation with a fixed ratio between power radiated by the clusters, thus examining a trade-off between these parameters. It is shown that channel correlation, total efficiency, and allocation of radiated power are mutually conflicting parameters. The trade-offs are shown and discussed. The theory is demonstrated on a four-element antenna array and on a mobile terminal antenna.
Submission history
From: Vojtech Neuman [view email][v1] Tue, 2 May 2023 13:45:53 GMT (1733kb,D)
[v2] Fri, 8 Dec 2023 12:01:22 GMT (1767kb,D)
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