Analysis of thin-wire nanoloops as superdirective antennas

Mario F. Pantoja, Jogender Nagar, Bingqian Lu, Taiwei Yue, Douglas H. Werner

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

Abstract

Superdirectivity has been a topic of active research in antennas at radio frequencies since it was first postulated almost a hundred years ago. Despite its potential use in solar cells and optical communications, the topic of superdirectivity on the nano-scale is a relatively new field of study. Examples of superdirective nano-antennas include phased arrays and notched dielectric spheres. In this communication, we show that superdirectivity naturally occurs in a simple thin-wire nanoloop without the need for phase shifters or the introduction of inclusions. A closed-form expression for the directivity at end-fire will be presented which allow the designer to easily predict when this phenomenon will occur. The physical mechanism producing superdirectivity will be explored by studying the currents and performing a multipole expansion.

Original languageEnglish (US)
Title of host publication2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages21-22
Number of pages2
ISBN (Electronic)9781509028863
DOIs
StatePublished - Oct 25 2016
Event2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Fajardo, Puerto Rico
Duration: Jun 26 2016Jul 1 2016

Publication series

Name2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings

Other

Other2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016
CountryPuerto Rico
CityFajardo
Period6/26/167/1/16

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All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Radiation
  • Computer Networks and Communications

Cite this

Pantoja, M. F., Nagar, J., Lu, B., Yue, T., & Werner, D. H. (2016). Analysis of thin-wire nanoloops as superdirective antennas. In 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings (pp. 21-22). [7695719] (2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APS.2016.7695719