Analysis and design of the dielectric Yagi-Uda nanoantenna with a double driven element

Conference proceedings article

Authors/Editors

RARDCHAWADEE SILAPUNT

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Publication Details

Author list: Satitchantrakul T., Silapunt R.

Publisher: Electromagnetics Academy

Publication year: 2014

Start page: 2306

End page: 2310

Number of pages: 5

ISBN: 9781934142288

ISSN: 1559-9450

eISSN: 1559-9450

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911165251&partnerID=40&md5=4f711c70aea24b136dc826643cb2a356

Languages: English-Great Britain (EN-GB)

Abstract

The Yagi-Uda silicon nanoantenna with the double driven element and 4 directors is proposed here. The simulation of single Si nanoparticles with a diameter between 40 and 53nm shows an increasing of the directivities for all emitter locations. The trend of the directivity appears to be random as the nanoparticle dimension and emitter distance increase. For the double driven element, the directivity profiles as a function of the radius appears to be wave-like forms. The directivity is clearly determined by two competing factors that are particle coupling and dimension. The directivity of the Yagi-Uda Si nanoantenna can be improved with more number of directors. The maximum directivity of the proposed structure with optimized geometric parameters is 11.42. The preliminary numerical model for predicting the directivity of this antenna is determined. The directivity can be further improved to 12.52 by reducing the gap between the double driven element and the first director.

Keywords