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Antenna currents for optimal Q, superdirectivity, and radiation patterns using convex optimization

Författare:
Publiceringsår: 2012
Språk: Engelska
Sidor:
Publikation/Tidskrift/Serie: Technical Report LUTEDX/(TEAT-7216)/1-21/(2012)
Volym: TEAT-7216
Dokumenttyp: Rapport
Förlag: [Publisher information missing]

Sammanfattning

The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that give upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-field are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.

Nyckelord

  • Electrical Engineering, Electronic Engineering, Information Engineering
  • Antenna theory
  • Physical limitations
  • Antenna Q
  • Superdirectivity
  • small antennas
  • Convex optimization

Övriga

Published
  • Electromagnetic theory-lup-obsolete

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