Surface Waves on SHDB Boundary
- Resource Type
- Periodical
- Authors
- Lindell, I. V.; Sihvola, A.
- Source
- IEEE Antennas and Wireless Propagation Letters Antennas Wirel. Propag. Lett. Antennas and Wireless Propagation Letters, IEEE. 13:1027-1030 2014
- Subject
- Fields, Waves and Electromagnetics
Vectors
Boundary conditions
Surface waves
Antennas
Erbium
Electromagnetics
Conductors
electromagnetic theory
- Language
- ISSN
- 1536-1225
1548-5757
SHDB boundary conditions were recently introduced as a generalization of soft-and-hard (SH) and DB boundary conditions. In this letter, it is shown that the SHDB boundary conditions are self-dual-invariant in any duality transformation. Also, it is shown that any problem involving an isotropic medium and SHDB boundaries can be reduced to two uncoupled problems by decomposing the fields in two wavefields (self-dual fields). As an example, it is shown that circularly polarized surface waves above a planar SHDB boundary are possible for certain boundary parameter values. Some properties of such waves are discussed.