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Conference Papers Year : 2023

Compact end-fire arrays: from theory to directivity and gain maximization

Abstract

End-fire arrays are among the best candidate for high directivity and compact dimensions. Several solutions for the synthesis of superdirective arrays have been proposed in the literature. However, what is called a "superdirective" array suffers inevitably high losses and very poor radiation efficiency. More appealing is the joint optimization of directivity and efficiency, or the intrinsic gain, of the antennas. This paper set side by side the directivity and gain optimization methods based on the Spherical Wave Expansion (SWE) theory. The synthesis of superdirective and supergain end-fire arrays is proposed when Huygens sources, which attain the highest level of directivity, or simple bent dipoles are selected as elements of the array. On behalf of the spherical modal expansions, the results obtained for different optimizations of the two arrays are examined.
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Dates and versions

cea-04006393 , version 1 (27-02-2023)

Identifiers

  • HAL Id : cea-04006393 , version 1

Cite

Alessio Tornese, Antonio Clemente, Christophe Delaveaud. Compact end-fire arrays: from theory to directivity and gain maximization. EuCAP 2023 - 17th European Conference on Antennas and Propagation, Mar 2023, Florence, Italy. ⟨cea-04006393⟩
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