An sub-array-Based DDM for full-wave EM simulation of large antenna arrays

Setting a proper number of antenna elements in arrays as a DDM unit, an artifice of DDM application for extremely big arrays is presented to balance the required RAM and calculating time for solving in each DDM unit and information exchange among different units. With this method, for array with hundreds of elements, both of the RAM and time consumed could be reduced, while the big arrays which are out of the compute capacity for average hardware platform could be simulated on a distributed system.