It has been recently shown that the efficiency of the finite-difference time-domain (FDTD) method for structures containing thin wires and metal edges is much increased by using modified assigned material parameters (MAMPs). These parameters may be calculated empirically and in many cases analytically. In this contribution, the technique is extended to include the case of 90⁰ and 270⁰ corners in microstrip which may exist at an arbitrary position within the plane of the mesh. A semi-analytical method is presented and applied to the analysis of a complex patch antenna. Results are presented which show that the use of MAMPs allows a much larger cell size to be used than would be needed to achieve the same accuracy using standard FDTD.
|Translated title of the contribution||The treatment of singularities at 90° and 270° microstrip corners in FDTD by the modification of assigned material parameters|
|Pages (from-to)||2124 - 2129|
|Number of pages||6|
|Journal||IEEE Transactions on Antennas and Propagation|
|Publication status||Published - Jul 2007|
Bibliographical notePublisher: Institute of Electrical and Electronics Engineers (IEEE)
Rose publication type: Journal article
By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- finite-difference time-domain (FDTD) methods
- planar waveguides.
- planar objects