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Degrees of freedom of the field and maximum directivity

E. Martini ; Per-Simon Kildal (Institutionen för signaler och system, Antennsystem) ; S. Maci
2016 URSI International Symposium on Electromagnetic Theory, EMTS 2016 (2163-405X). p. 775-776. (2016)
[Konferensbidrag, refereegranskat]

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.

Denna post skapades 2016-11-11. Senast ändrad 2017-01-16.
CPL Pubid: 245059


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Institutioner (Chalmers)

Institutionen för signaler och system, Antennsystem (2014-2017)



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