%0 Journal Article %T FEM-Ddm with an Efficient Second-Order Transmission Condition in Both High-Frequency and Low-Frequency Applications %A Jin Ma %A Zai-Ping Nie %J PIER B %D 2013 %I EMW Publishing %R 10.2528/PIERB13030614 %X In this paper, a novel second-order transmission condition is developed in the framework of non-conformal finite element domain decomposition method to meet the challenges brought by complex and large-scale electromagnetic modeling. First, it is implemented efficiently on the non-conformal interface via a Gauss integral scheme. Then, the eigenvalue analysis of the DDM system show a more clustered eigenvalue distribution of this transmission condition compared with several existing transmission conditions. After that, it is applied to large-scale complex problems such as S-type waveguides in the high frequency band and dielectric well-logging applications in the low frequency band. The final numerical results demonstrate that this transmission condition has high efficiency and huge capability for modeling large-scale problems with multi-resolution in any frequency band. %U http://www.jpier.org/pierb/pier.php?paper=13030614