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Physical Bounds and Optimal Currents on Antennas
KTH, Skolan för elektro- och systemteknik (EES), Elektroteknisk teori och konstruktion.ORCID-id: 0000-0001-7269-5241
2012 (engelsk)Inngår i: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 60, nr 6, s. 2672-2681Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2012. Vol. 60, nr 6, s. 2672-2681
Emneord [en]
Antenna Q, antenna theory, physical limitations, polarizability
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Identifikatorer
URN: urn:nbn:se:kth:diva-98728DOI: 10.1109/TAP.2012.2194658ISI: 000304909800008Scopus ID: 2-s2.0-84861892765OAI: oai:DiVA.org:kth-98728DiVA, id: diva2:538909
Forskningsfinansiär
Swedish Research Council
Merknad
QC 20120702Tilgjengelig fra: 2012-07-02 Laget: 2012-07-02 Sist oppdatert: 2022-06-24bibliografisk kontrollert

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Jonsson, B. Lars G.

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