A priori estimates on the partial realized gain of UWB-antennas
Författare
Summary, in English
A summation rule valid for a large class of linear and reciprocal antennas is presented in terms of the electric and
magnetic polarizability dyadics. The identity is based on the holomorphic properties of the forward scattering dyadic
and includes arbitrary shaped antennas modeled by linear and time-translational invariant constitutive relations. In
particular, a priori estimates on the partial realized gain are introduced, and lower bounds on the onset frequency
is derived for two important archetypes of UWB-antennas. The theoretical findings are illustrated by the equiangular
planar spiral antenna, and comparison with numerical simulations show great potential for future use in antenna theory.
magnetic polarizability dyadics. The identity is based on the holomorphic properties of the forward scattering dyadic
and includes arbitrary shaped antennas modeled by linear and time-translational invariant constitutive relations. In
particular, a priori estimates on the partial realized gain are introduced, and lower bounds on the onset frequency
is derived for two important archetypes of UWB-antennas. The theoretical findings are illustrated by the equiangular
planar spiral antenna, and comparison with numerical simulations show great potential for future use in antenna theory.
Publiceringsår
2008
Språk
Engelska
Sidor
1-4
Länkar
Dokumenttyp
Konferensbidrag
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Conference name
XXIXth URSI General Assembly 2008
Conference date
2008-08-07 - 2008-08-16
Conference place
Chicago, Illinois, United States
Status
Published
Forskningsgrupp
- Electromagnetic theory