In this presentation, a parallel microwave analysis code based on an iterative domain de-composition method is explained that is named ADVENTURE_Fullwave. A stationary vector wave equation for the high-frequency electromagnetic field analyses is solved taking an electric field as an unknown function. Then, to solve subdo-main problems by the direct method, the direct method based on the LDLT de-composition method is introduced in subdomains. The simplified Berenger’s PML is introduced which these eight corners are given the average value of all PML’s layers.