Regulation of near magnetic field distribution by using ultra-subwavelength magnetic metamaterials

We propose a method to locate the frequency where the best magnetic field uniformity is achieved of ultra-subwavelength magnetic metamaterials (MMs) with different laying patterns. Frequency bandwidth of MMs retrieved from time-domain experiments and two statistics of magnetic field distribution narrow frequency scope greatly. The result of magnetic field distribution demonstrate MM’s powerful regulation of near magnetic field in wirelessly power and information transmission, including the enhancement of power transfer efficiency and variation of field distribution.