Degrees of freedom of the field and maximum directivity
Paper i proceeding, 2016

This contribution discusses the relationship between the number of degrees of freedom (DoF) and the maximum directivity for an arbitrary set of sources enclosed by a given spherical surface. In particular, it is shown that the number of DoF is equal to twice the maximum directivity. This provides a directivity limitation for arbitrarily sized antennas, thus, extending the validity of the known formulas for electrically large and electrically small antennas.

Författare

E. Martini

Università degli Studi di Siena

Per-Simon Kildal

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

S. Maci

Università degli Studi di Siena

2016 URSI International Symposium on Electromagnetic Theory, EMTS 2016

775-776 7571516

Ämneskategorier

Signalbehandling

DOI

10.1109/URSI-EMTS.2016.7571516

ISBN

978-1-5090-2503-9