Self resonant structures of very small normal-mode helical antennas in case of containing dielectric or magnetic materials inside

摘要

The important equation for self-resonant structures of very small normal-mode helical antennas placed in a free space is already developed. However, in the case of dielectric or magnetic material insertions, the self-resonant equation is not shown. In this paper, self-resonant structures in these cases are clarified through electromagnetic simulations by MoM of FEKO. Empirical self-resonant equation is proposed.