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Physical bounds and optimal currents on antennas

Författare:
Publiceringsår: 2012
Språk: Engelska
Sidor: 2672-2681
Publikation/Tidskrift/Serie: IEEE Transactions on Antennas and Propagation
Volym: 60
Nummer: 6
Dokumenttyp: Artikel

Sammanfattning

Physical bounds on the directivity Q-factor quotient and optimal current distributions are determined for antennas of arbitrary shape and size using an optimization formulation. A variational approach offers closed form solutions for small antennas expressed in the polarizability of the antenna structure. Finite sized antennas are solved using Lagrangian parameters in a method of moments formulation.
It is also shown that the optimal charge density for a small antenna can be generated by several current densities. Numerical examples for small and large antennas are used to illustrate the results.

Disputation

Nyckelord

  • Technology and Engineering
  • Antenna theory
  • Physical limitations
  • Antenna Q
  • Polarizability

Övriga

Published
Yes
  • Electromagnetic theory
  • ISSN: 0018-926X

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