Superdirective arrays with finite-length dipoles: modeling and new perspectives

Konstantinos Dovelos*, Stylianos D. Assimonis, Hien Quoc Ngo, Michail Matthaiou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)
50 Downloads (Pure)

Abstract

Dense arrays can facilitate the integration of multiple antennas into finite volumes. In addition to the compact size, sub-wavelength spacing enables superdirectivity for endfire operation, a phenomenon that has been mainly studied for isotropic and infinitesimal radiators. In this work, we focus on linear dipoles of arbitrary yet finite length. Specifically, we first introduce an array model that accounts for the sinusoidal current distribution (SCD) on very thin dipoles. Based on the SCD, the loss resistance of each dipole antenna is precisely determined. Capitalizing on the derived model, we next investigate the maximum achievable rate under a fixed power constraint. The optimal design entails conjugate power matching along with maximizing the array gain. Our theoretical analysis is corroborated by the method of moments under the thin-wire approximation, as well as by full-wave simulations. Numerical results showcase that a super-gain is attainable with high radiation efficiency when the dipole antennas are not too short and thin.

Original languageEnglish
Title of host publication2022 IEEE Global Communications Conference (GLOBECOM 2022): Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages6517-6522
Number of pages6
ISBN (Electronic)9781665435406
ISBN (Print)9781665435413
DOIs
Publication statusPublished - 11 Jan 2023
EventIEEE Global Communications Conference 2022 - Rio de Janeiro, Brazil
Duration: 04 Dec 202208 Dec 2022

Publication series

NameIEEE Global Communications Conference (GLOBECOM) : Proceedings
PublisherIEEE
ISSN (Print)1930-529X
ISSN (Electronic)2576-6813

Conference

ConferenceIEEE Global Communications Conference 2022
Abbreviated titleIEEE GLOBECOM 2022
Country/TerritoryBrazil
CityRio de Janeiro
Period04/12/202208/12/2022

Fingerprint

Dive into the research topics of 'Superdirective arrays with finite-length dipoles: modeling and new perspectives'. Together they form a unique fingerprint.

Cite this