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arXiv · 2309.09889

Super Realized Gain Antenna Array

Donal Patrick Lynch·Manos M. Tentzeris·Vincent Fusco·Stylianos D. Assimonis
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Abstract

In this study, we investigate and fabricate a superdirective antenna array composed of strip dipole elements operating at a frequency of 3.5 GHz. The spacing, dimensions, and phase difference of the elements are optimized to achieve a super realized gain antenna with a theoretical efficiency of 98.8% and computed efficiency of 99.3%. By employing an element spacing of 0.2$λ$, the end-fire antenna array demonstrates a maximum theoretical realized gain of 6.4 dBi, and a maximum computed realized gain of 6.3 dBi. Significantly, our proposed superdirective antenna array distinguishes itself from existing approaches by achieving high directivity, high radiation efficiency, and impedance matching to 50 $Ω$ solely through careful adjustments in the strip dimensions and the inter-element phase. This eliminates the need for additional impedance matching networks, amplifiers, or attenuators.

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Donal Patrick Lynch, Manos M. Tentzeris, Vincent Fusco, Stylianos D. Assimonis. 2023-09-18. Super Realized Gain Antenna Array. https://arxiv.org/abs/2309.09889

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