Title :
Wideband absorbing boundary conditions using third-order boundary operators for time domain TLM analysis
Author :
Eswarappa, C. ; Hoefer, W.J.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
fDate :
June 28 1993-July 2 1993
Abstract :
A very-wideband dispersive absorbing boundary condition is presented for time-domain analysis of guided waves. It is obtained by concatenating three first-order boundary operators. A minimum return loss of -30 dB is obtained over a frequency range from DC to 200 GHz for an open microstrip line on alumina substrate of 0.635 mm thickness. The additional constant terms introduced in the boundary operators (to absorb low-frequency signals) are very important in stabilizing the higher-order boundary conditions.<>
Keywords :
alumina; boundary-value problems; dispersion (wave); electromagnetic wave absorption; losses; microstrip lines; time-domain analysis; transmission line matrix methods; 0 to 200 GHz; 200 GHz; 30 dB; TLM analysis; absorbing boundary condition; alumina substrate; guided waves; open microstrip line; return loss; third-order boundary operators; time-domain analysis; Absorption; Boundary conditions; Dispersion; Equations; Finite difference methods; Microstrip; Radio frequency; Time domain analysis; Transmission line theory; Wideband;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385414
