Sa. Tretyakov et al., ANALYTICAL ANTENNA MODEL FOR CHIRAL SCATTERERS - COMPARISON WITH NUMERICAL AND EXPERIMENTAL-DATA, IEEE transactions on antennas and propagation, 44(7), 1996, pp. 1006-1014
An analytical model for polarizability dyadics of small chiral conduct
ive particles in free space or those embedded in a lossy material is p
resented and discussed. Chiral particles are modeled by a wire loop co
nnected to two straight wire elements. The electromagnetic analysis is
based on the replacement the particles by two connected antennas repr
esenting the wire and loop portions. Analytical expressions for polari
zabilities are given, For electrically small particles, a lumped-eleme
nt equivalent circuit can be constructed and the polarizabilities can
be expressed in terms of equivalent circuit parameters, It Is shown th
at the wire-and-loop antenna model for scatterers satisfies the recipr
ocity condition and other basic physical requirements, Approximate ana
lytical expressions are compared with numerical simulations and with t
he experimental data on reflection from single chiral particles, and t
he results are seen to be in good agreement. The model can be used in
analytical modeling of chiral and omega composite materials.