Optically controlled Bragg reflection characteristic of millimeter waves in a corrugated dielectric waveguide
✍ Scribed by Arokiaswami Alphones; Makoto Tsutsumi
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 244 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Figure Return loss of gap-coupled circular patch antenna derived by using three methods 4.0 and 1.6 mm, respectively. The cell size along the thickness of the substrate is 0.4 mm, while it is 0.6965 mm along the other two directions. Figure compares the result for the return loss of the antenna derived by using three schemesᎏ the present method, the staircasing approach, and the method Ž . of moments MoM . It is evident from the figure that the results obtained by using the present method show a better agreement with the MoM results than the ones obtained by using the staircasing approach.
7. Conclusions
This paper has introduced a modification of the conformal finite-difference time-domain algorithm described in an earlier communication to overcome the size and shape limitations of the previous scheme in deriving a stable solution.
The numerical experiments demonstrate that the improvement in stability is achieved with little loss in accuracy. An extension of the MCFDTD scheme to dielectric regions with arbitrary boundaries is currently being developed by the authors, and will be reported in a future communication.