龙毅, 方大纲, 朱汉清. A Fast Algorithm for Analyzing Periodic Structures Combining Method of Lines with FFT and Diakoptic Technique[J]. Acta Electronica Sinica, 1996, (6).
龙毅, 方大纲, 朱汉清. A Fast Algorithm for Analyzing Periodic Structures Combining Method of Lines with FFT and Diakoptic Technique[J]. Acta Electronica Sinica, 1996, (6).DOI:
A new fast algorithm is presented by combining method of lines(MoL) with FFT and diakoptic technique. In order to calculate the impedance elements by FFT
the Helmholtz equation of infinite period with oblique incidence is transformed to a new one. Then the current on the metal strip is calculated by using diakoptic technique. Compared with conventional MoL
the new algorithm presented in this paper is more powerful. Numerical results computed are in good agreement with those published. Finally
the measured and calculated results of double gratings are presented.