Structure of left-handed-materials for splitting electromagnetic energy

The energy-splitter is widely used in microwave engineering. Finite-difference time-domain(FDTD) method is used to analyze and verify new accurate energy-split structures with perfectly matched lossy left-handed-material(LHM) slabs or ring. From these numerical simulations, the sub-energy-sources at the outer focusing image points of each LHM slab are generated. All of the sub-energy-sources have almost the same magnitude in such symmetric structures. The energy splitting effect of these new LHM structures can be seen.