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- W4380451250 abstract "Sparse arrays of antennas can sometimes be modelled without accounting for the mutual coupling. In that case, the array radiation pattern can be expressed as the product of two factors: the isolated antenna radiation pattern and the array factor. Using the array impedance matrix, this formalism can be extended to account for the mutual coupling when the array is made of single-mode antennas. In this paper, we propose an extension of that formalism to the case of multi-mode antennas. We show that, contrary to the single-mode case, the array impedance matrix and isolated element patterns are not sufficient to rigorously account for mutual coupling. Building on these concepts, we propose a new quantity, the extended array admittance matrix. Combined with a modal decomposition of the currents on the antennas, it can be used to rigorously account for mutual coupling between multi-mode antennas in an array. The proposed formalism is illustrated by numerical examples." @default.
- W4380451250 created "2023-06-14" @default.
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- W4380451250 date "2023-01-01" @default.
- W4380451250 modified "2023-09-27" @default.
- W4380451250 title "Embedded patterns and extended array admittance matrix" @default.
- W4380451250 doi "https://doi.org/10.1109/lawp.2023.3285310" @default.
- W4380451250 hasPublicationYear "2023" @default.
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