Abstract
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.
| Original language | English |
|---|---|
| Pages | 1-4 |
| Publication status | Published - 2008 |
| Event | XXIXth URSI General Assembly 2008 - Chicago, Chicago, Illinois, United States Duration: 2008 Aug 7 → 2008 Aug 16 |
Conference
| Conference | XXIXth URSI General Assembly 2008 |
|---|---|
| Country/Territory | United States |
| City | Chicago, Illinois |
| Period | 2008/08/07 → 2008/08/16 |
Subject classification (UKÄ)
- Electrical Engineering, Electronic Engineering, Information Engineering