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On physical limitations for broadband electromagnetic scattering --- high order spherical waves

  • Anders Bernland
Publiceringsår: 2011
Språk: Engelska
Sidor: 619-622
Dokumenttyp: Konferensbidrag
Förlag: The Pacific Institute for the Mathematical Sciences, Canada


Limitations on the scattering matrix are derived for a
wide class of objects, restricting their broadband interaction
with electromagnetic vector spherical waves in terms
of their size, shape and static material properties. In particular,
it is seen that the order of the dominating term
for electrically small objects increases with the order of
the spherical wave. The results are applicable to many
areas concerned with electromagnetic waves interacting
with matter. For instance, they open up a new approach
to derive bounds on antenna performance. They can also
be generalized to acoustic and elastodynamic scattering.
Two intermediate results presented are a set of sum rules
for and the low-frequency asymptotic expansions of the
scattering and transition matrices of a general scatterer.



  • Electrical Engineering, Electronic Engineering, Information Engineering


10th International Conference on Mathematical and Numerical Aspects of Waves
Vancouver, BC, Canada
  • Swedish Foundation for Strategic Research (SSF)
  • EIT_HSWC:Antenna MIMO antennas and channels
  • Electromagnetic theory

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