Title :
Microwave absorption by chiral, racemic and non-chiral unit cells: the role of chirality in absorbing materials
Author :
Bingle, Marianne ; Cloete, Johannes Hendrik ; Davidson, David Bruce
Author_Institution :
Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa
Abstract :
A theoretical and experimental study is conducted to investigate the role of chirality in synthetic microwave absorbers. Three closely related anisotropic unit cells of thin wire objects, one chiral, one racemic and one non-chiral, are studied around resonance in a rectangular waveguide. Conducting thin wire chiral and non-chiral objects, embedded in an absorbing dielectric host and positioned in a rectangular waveguide, are numerically analysed with the finite difference time domain method. Measured and predicted results for the scattering parameters are presented
Keywords :
S-parameters; chirality; electrical engineering computing; electromagnetic wave absorption; finite difference time-domain analysis; rectangular waveguides; resonance; absorbing dielectric host; anisotropic unit cells; chiral unit cells; conducting thin wire chiral objects; conducting thin wire non-chiral objects; finite difference time domain method; microwave absorption; non-chiral unit cells; racemic unit cells; rectangular waveguide; resonance; scattering parameters; synthetic microwave absorbers; thin wire objects; Anisotropic magnetoresistance; Conducting materials; Dielectric measurements; Electromagnetic wave absorption; Finite difference methods; Rectangular waveguides; Resonance; Slabs; Time domain analysis; Wire;
Conference_Titel :
Communications and Signal Processing, 1998. COMSIG '98. Proceedings of the 1998 South African Symposium on
Conference_Location :
Rondebosch
Print_ISBN :
0-7803-5054-5
DOI :
10.1109/COMSIG.1998.737000
