Premium
Complex chiral admittance of conducting multiturn helices embedded in a dielectrically lossy medium in the quasi‐stationary approximation
Author(s) -
Luk R. Arnaut,
Lara E. Davis
Publication year - 1996
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/96rs00282
Subject(s) - lossy compression , admittance , physics , rotation (mathematics) , helix (gastropod) , circular dichroism , chirality (physics) , optics , computational physics , geometry , electrical impedance , quantum mechanics , mathematics , chiral anomaly , crystallography , ecology , statistics , chemistry , fermion , snail , nambu–jona lasinio model , biology
An analysis is made of electromagnetic activity due to the chirality of conducting multiturn helical objects in the quasi‐stationary approximation. The complex chiral admittance ξ e is computed analytically for a lossy helix embedded in a dielectrically lossy host material as a function of the helix dimensions and medium properties using a parallel‐wire transmission line model. The condition for chiral losslessness of an electromagnetically lossy chiral is obtained, and it is shown that irrotativity is not possible in the quasi‐static approximation. The dependence of ξ e on helix diameter, gauge, pitch, and length is demonstrated. With the aid of this model, electromagnetic rotation and circular dichroism are calculated for lossy chirals and compared with measured data.