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Abstract
A non-uniform mesh locally conformal FDTD (NUMLC-FDTD) technique is applied to analyze the properties of arbitrarily shaped broadwall slot with less computational costs. The NUMLC-FDTD method divides the whole computation domain into fine and coarse mesh domains and in fine mesh domain Faraday's law is applied in different cell regions according to different types of distorted cells. Mutual coupling of the doublet bulletedheaded slots is analyzed and numerical results demonstrate the efficiency as well as the accuracy of the method.