On the efficiency of antennas

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearchpeer-review

Abstract

The fundamental limits of the power efficiency of an antenna are explored. The antenna is confined in a sphere and all of the currents are assumed to run in a material with a conductivity that is a function of the radial coordinate. The analysis is based on the expansion of the electromagnetic fields in terms of vector spherical harmonics. Explicit expressions for the limits of efficiency are derived for different types of antennas
Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics (AIP)
Pages74-80
Volume834
DOIs
Publication statusPublished - 2006
EventMathematical Modeling of Wave Phenomena: 2nd Conference on Mathematical Modeling of Wave Phenomena - Vaxjo, Sweden
Duration: 2005 Aug 142005 Aug 19

Publication series

Name
Volume834
ISSN (Print)1551-7616
ISSN (Electronic)0094-243X

Conference

ConferenceMathematical Modeling of Wave Phenomena: 2nd Conference on Mathematical Modeling of Wave Phenomena
Country/TerritorySweden
CityVaxjo
Period2005/08/142005/08/19

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • electromagnetic fields
  • radial coordinate
  • antenna efficiency
  • power efficiency
  • vector spherical harmonics

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