Time-Modulation as a Vehicle for Bypassing the Gain-Bandwidth bound of Small LTI Antennas

Yakir Hadad, Amir Shlivinski

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The Chu bound, developed under the assumptions of passivity, linearity, and time-invariance sets a lower limit on the quality factor of a small antenna. This with the gain properties of the antenna dictates its maximal attainable gain-bandwidth product of an antenna. By revoking the LTI assumption of the properties e.g., by allowing time variation of the antenna properties, better performance may be achieved. In the following presentation we specifically discuss the effect of time-modulation of the antenna structure on the gain-bandwidth product of a system of three coupled antennas. It is shown that time-modulation may give better results beyond that obtained for the corresponding LTI antenna system.

Original languageEnglish
Title of host publication2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages405-406
Number of pages2
ISBN (Electronic)9781728146706
DOIs
StatePublished - 1 Jan 2021
Event2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Singapore, Singapore
Duration: 4 Dec 202110 Dec 2021

Publication series

Name2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 - Proceedings

Conference

Conference2021 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021
Country/TerritorySingapore
CitySingapore
Period4/12/2110/12/21

Keywords

  • Linear Time Variant Antenna
  • Time Modulated Antenna

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