Absorption Efficiency and Physical Bounds on Antennas
Author
Summary, in English
Abstract—The all spectrum absorption efficiency appears in
the physical bounds on antennas expressed in the polarizability
dyadics. Here, it is shown that this generalized absorption
efficiency is close to 1/2 for small idealized dipole antennas and
for antennas with a dominant resonance in their absorption. Also,
the usefulness of this parameter is analyzed for estimation of
antenna performance. The results are illustrated with numerical
data for several antennas.
the physical bounds on antennas expressed in the polarizability
dyadics. Here, it is shown that this generalized absorption
efficiency is close to 1/2 for small idealized dipole antennas and
for antennas with a dominant resonance in their absorption. Also,
the usefulness of this parameter is analyzed for estimation of
antenna performance. The results are illustrated with numerical
data for several antennas.
Publishing year
2010
Language
English
Publication/Series
International Journal of Antennas and Propagation
Volume
2010
Document type
Journal article
Publisher
Hindawi Limited
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Keywords
- sum rule
- absorption efficiency
- Physical bounds
- polarizability
Status
Published
Research group
- Electromagnetic theory
ISBN/ISSN/Other
- ISSN: 1687-5869