Title :
Analysis of a terahertz resonator using an efficient LOD-FDTD method with a PEC boundary condition
Author :
Shibayama, Jun ; Ozaki, S. ; Nakano, Hisamatsu ; Yamauchi, Junji
Author_Institution :
Dept. of Electr. & Electron. Eng., Hosei Univ., Koganei, Japan
Abstract :
A terahertz (THz) resonator composed of parallel metal plates with gratings is analyzed using the locally one-dimensional finite-difference time-domain (LOD-FDTD) method with a perfect electric conductor (PEC) boundary condition. A defect section is introduced into the gratings, yielding a strong resonance in the band gap of the gratings. A shift of the resonance frequency caused by a large time step size can be compensated with the help of the dispersion control parameters. The computation time of the PEC-LOD-FDTD is reduced to only 35% of that of the traditional explicit FDTD.
Keywords :
conductors (electric); dispersion (wave); energy gap; finite difference time-domain analysis; plates (structures); resonators; terahertz wave devices; PEC Boundary Condition; PEC-LOD-FDTD computation time reduction; THz resonator; dispersion control parameter; grating band gap; locally one-dimensional finite-difference time-domain method; parallel metal plate; perfect electric conductor boundary condition; resonance frequency shift; terahertz resonator analysis; time step size; Boundary conditions; Dispersion; Finite difference methods; Gratings; Metals; Resonant frequency; Time-domain analysis;
Conference_Titel :
Numerical Electromagnetic Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO), 2014 International Conference on
Conference_Location :
Pavia
DOI :
10.1109/NEMO.2014.6995663
