Title :
FDTD multimode characterization of waveguide devices using absorbing boundary conditions for propagating and evanescent modes
Author :
Vielva, Luis A. ; Pereda, José A. ; Prieto, Andrks ; Vegas, Angel
Author_Institution :
Dept. de Electron., Cantabria Univ., Spain
fDate :
6/1/1994 12:00:00 AM
Abstract :
The characterization of microwave devices by means of the FDTD method is highly dependent on the availability of suitable absorbing boundary conditions. The authors present absorbing boundary conditions that are particularly appropriate for the analysis of waveguide devices because both propagating and evanescent modes are absorbed. Additionally, the modal decomposition of the total field provided by FDTD is shown to constitute an alternative procedure to frequency domain methods in the wideband multimode characterization of microwave devices.<>
Keywords :
boundary-value problems; finite difference time-domain analysis; microwave devices; waveguide components; FDTD multimode characterization; absorbing boundary conditions; evanescent modes; modal decomposition; propagating modes; waveguide devices; Boundary conditions; Electromagnetic propagation; Electromagnetic propagation in absorbing media; Electromagnetic waveguides; Finite difference methods; Microwave devices; Microwave propagation; Microwave theory and techniques; Time domain analysis; Wideband;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
