On the relation between optimal wideband matching and scattering of spherical waves
Author
Summary, in English
Using an exact circuit analogy for the scattering of vector spherical waves, it is shown
how the problem of determining the optimal scattering bounds for a homogeneous sphere
in its high-contrast limit is identical to the closely related, and yet very different problem of finding
the broadband tuning limits of the spherical waves.
Using integral relations similar to Fano's broadband matching bounds,
the optimal scattering limitations are determined by the static response as well as the high-frequency asymptotics of the reflection coefficient.
The scattering view of the matching problem yields explicitly the necessary low-frequency asymptotics of the
reflection coefficient that is used with Fano's broadband matching bounds for spherical waves,
something that appears to be non-trivial to derive from the classical network point of view.
how the problem of determining the optimal scattering bounds for a homogeneous sphere
in its high-contrast limit is identical to the closely related, and yet very different problem of finding
the broadband tuning limits of the spherical waves.
Using integral relations similar to Fano's broadband matching bounds,
the optimal scattering limitations are determined by the static response as well as the high-frequency asymptotics of the reflection coefficient.
The scattering view of the matching problem yields explicitly the necessary low-frequency asymptotics of the
reflection coefficient that is used with Fano's broadband matching bounds for spherical waves,
something that appears to be non-trivial to derive from the classical network point of view.
Publishing year
2010
Language
English
Publication/Series
Technical Report LUTEDX/(TEAT-7204)/1-25/(2010)
Full text
Document type
Report
Publisher
[Publisher information missing]
Topic
- Electrical Engineering, Electronic Engineering, Information Engineering
Status
Published
Report number
TEAT-7204
Research group
- Electromagnetic theory