[IEEE Proceedings. ICCEA 2004. 2004 3rd International Conference on Computational Electromagnetics and Its Applications, 2004. - Beijing, China (Nov. 1-4, 2004)] Proceedings. ICCEA 2004. 2004 3rd International Conference on Computational Electromagnetics and Its Applications, 2004. - Applying AWE to higher order vector FE-BI method for calculating input impedance of patch antenna