Utilizing Structure Symmetry to Reduce the CPU Time for Computing [Z] Matrix Elements in the Method of Moments

• Main Author: Zeyad O. Al-Hekail
• Format: Article
• Language: English
• Published: Elsevier 2002-01-01
• Series: Journal of King Saud University: Engineering Sciences
• Online Access: http://www.sciencedirect.com/science/article/pii/S1018363918307451

The Method of Moments is often used to accurately compute the radiated or scattered fields from simple or complex structures. However, huge computer memory is required when utilizing it to solve electrically large structures. And, even if the available computers satisfy the memory requirements, the needed CPU time is often very long. In this paper a technique that can be used to reduce the required CPU time for computing the [Z] matrix elements is described. This technique utilizes the possible symmetry in the problem. An example involving the computation of the scattered fields from a large triangular dihedral is worked out in detail with CPU time reduction up to about 75%.