Abstract
The standard FD-TD method requires a very fine grid to model singular fields in the vicinity of sharp metal edges. This is a problem for simulating microwave structures composed of thin metal sheets, such as planar transmission lines and patch antennas. We have derived improved (enhanced) FD-TD equations for diagonal metal edges by considering field singularity. With these equations, various microwave structures can be analyzed accurately using a much coarser grid. In this paper, we demonstrate the application of enhanced FD-TD equations in (1) modeling wave propagation in diagonal microstrip lines, (2) simulating resonance in microstrip patch antennas. The accuracy of numerical results was improved by a factor of between 4 to 10, without additional computational overhead (time or memory).
| Original language | English |
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| Title of host publication | Asia-Pacific Microwave Conference Proceedings, APMC |
| Editors | Andrew Parfitt |
| Place of Publication | Piscataway, NJ |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Pages | 10-11 |
| Number of pages | 2 |
| Publication status | Published - 2000 |
| Event | 12 Asia-Pacific Microwave Conference - Sydney, Australia Duration: 3 Dec 2000 → 6 Dec 2000 |
Other
| Other | 12 Asia-Pacific Microwave Conference |
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| City | Sydney, Australia |
| Period | 3/12/00 → 6/12/00 |