Time-modulated structures for energy accumulation

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

Abstract

Accumulation of electromagnetic field energy in lossless objects (resonators, metasurfaces, reactive circuit elements) is limited by the amplitude of time-harmonic external sources. In the steady-state regime, all incident power is fully re-radiated (reflected), and the stored energy does not increase in time, although the external source continuously supplies energy. Here, we show that lossless objects can continuously accumulate unlimited energy if their properties are made time-varying. Here we consider the simplest example of a reactive load of a transmission line and analytically derive the required time dependence of the load reactance for unlimited energy accumulation. We also prove that properly designing time-varying resonant circuits, one can arbitrarily engineer the time dependence of the current in the circuit fed by a given time-harmonic source. Finally, we discuss how this stored energy can be released in form of a tune-compressed pulse.

Original languageEnglish
Title of host publication2018 12th International Congress on Artificial Materials for Novel Wave Phenomena, METAMATERIALS 2018
PublisherIEEE
Pages492-494
Number of pages3
ISBN (Electronic)9781538647028
DOIs
Publication statusPublished - 13 Nov 2018
MoE publication typeA4 Article in a conference publication
EventInternational Congress on Artificial Materials for Novel Wave Phenomena - Espoo, Finland
Duration: 27 Aug 20181 Sep 2018
Conference number: 12

Conference

ConferenceInternational Congress on Artificial Materials for Novel Wave Phenomena
Abbreviated titleMETAMATERIALS
Country/TerritoryFinland
CityEspoo
Period27/08/201801/09/2018

Fingerprint

Dive into the research topics of 'Time-modulated structures for energy accumulation'. Together they form a unique fingerprint.

Cite this