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  • Ehrenborg, Casimir, et al. (author)
  • Fundamental bounds on MIMO antennas
  • 2018
  • In: IEEE Antennas and Wireless Propagation Letters. - 1536-1225. ; 17:1, s. 21-24
  • Journal article (peer-reviewed)abstract
    • Antenna current optimization is often used to analyze the optimal performance of antennas. Antenna performance can be quantified in e.g., minimum Q-factor and radiation efficiency. The performance of MIMO antennas is more involved and, in general, a single parameter is not sufficient to quantify it. Here, the capacity of an idealized channel is used as the main performance quantity. An optimization problem in the current distribution for optimal capacity, measured in spectral efficiency, given a fixed Q-factor and radiation efficiency is formulated as a semi-definite optimization problem. A model order reduction based on characteristic and energy modes is employed to improve the computational efficiency. The performance bound is illustrated by solving the optimization problem numerically for rectangular plates and spherical shells.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Gustafsson, Mats (1)
Ehrenborg, Casimir (1)
University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Engineering and Technology (1)
Year
2018 (1)

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