On end-fire super directivity of arrays of two elementary dipoles and isotropic radiators

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F19%3A00335400" target="_blank" >RIV/68407700:21230/19:00335400 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1049/iet-map.2018.6013" target="_blank" >https://doi.org/10.1049/iet-map.2018.6013</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1049/iet-map.2018.6013" target="_blank" >10.1049/iet-map.2018.6013</a>

Result language
angličtina
Original language name
On end-fire super directivity of arrays of two elementary dipoles and isotropic radiators
Original language description
The concept of source currents of a radiating source can be employed to express its directivity in some particular cases analytically. For an antenna array, this concept can be extended to the concept of a generalised directivity based on self- and mutual radiation intensities, self- and mutual radiated powers and excitation currents of array elements. These approaches were applied to examples of the array of two elementary dipoles and the array of two isotropic radiators. Particularly, the evaluation of the directivity of the end-fire arrays, which are of special attention due to superdirective properties, was treated. Novel closed-form expressions for the directivity of these arrays with out-of-phase excitation were derived. It was observed that the end-fire directivity can be further enhanced by optimising the excitation currents of the arrays. Their optimal phase difference and corresponding increased directivity were also found analytically. The results were validated by a full-wave simulator.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20201 - Electrical and electronic engineering

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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