DocumentCode :
3110038
Title :
Sum rules and physical bounds in electromagnetic theory
Author :
Gustafsson, Mats ; Sjöberg, Daniel ; Bernland, Anders ; Kristensson, Gerhard ; Sohl, Christian
Author_Institution :
Dept. of Electr. & Inf. Technol., Lund Univ., Lund, Sweden
fYear :
2010
fDate :
16-19 Aug. 2010
Firstpage :
37
Lastpage :
40
Abstract :
Sum rules are useful in many branches of physics and engineering as they relate all spectrum parameter values with their asymptotic expansions. Properties of the dynamic response can hence be inferred by the, in many cases much simpler, static response. This has e.g., been used for lossless matching networks, radar absorbers, extinction cross section, partial realized gain of antennas, high-impedance surfaces, transmission cross section, transmission coefficients, and temporal dispersion of metamaterials. Here, several sum rules and their associated physical bounds are reviewed and it is shown that integral identities for Herglotz functions offer a unified approach in deriving them.
Keywords :
dynamic response; electric field integral equations; electromagnetic wave propagation; sum rules; Herglotz function; asymptotic expansion; dynamic response; electromagnetic theory; high-impedance surface; integral identity; lossless matching networks; metamaterial; physical bound; radar absorber; spectrum parameter value; sum rules; temporal dispersion; transmission coefficients; transmission cross-section; Copper; Electromagnetics; Impedance; Permittivity; Scattering; Surface impedance; Surface waves;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electromagnetic Theory (EMTS), 2010 URSI International Symposium on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-5155-5
Electronic_ISBN :
978-1-4244-5154-8
Type :
conf
DOI :
10.1109/URSI-EMTS.2010.5637030
Filename :
5637030
Link To Document :
بازگشت