Numerical analysis of superscatterer applied in inductive coupling system to equivalently expand and move coils

摘要

Superscatterer is typically made of complementary media for expanding the scope of scattering. The fact that superscatterer can make object appear bigger than its geometric size provides the possibility of equivalently enlarging and moving coils in inductive coupling system. In this paper, we demonstrate that the superscatterer without perfect electrical conductor can also expand the distribution of magnetic field with a source inside. Based on transformation optics, a spherical superscatterer is designed and simulated especially in near field. A model of two-coil inductive coupling system is numerically analyzed to prove the enhancement on mutual coupling by superscatterer. Finally, we also discuss the simplification of such superscatterer for fabrication concerns.