Design of a Metamaterial Element in Deep Subwavelength Composed of Multilayer Meander Line (MML) Resonator Structures

An extremely compact metamaterial element is proposed with multilayer meander line (MML) resonator inclusions. The MML is featured with multiple single-planar meander line (SML) structures which are connected by via. The effective inductance in the new MML structure is thus multiplied leading to a reduced resonance frequency. A proof MML element is numerically demonstrated with period of 8mm. Very strong electric responses have been observed indicating the MML element is essentially a kind of electrically resonating structure. The proof MML element resonances at 237MHz in VHF band. The electrical period size is 1/158λ0 which is in deep subwavelength. By making the meander line thinner or incorporating more SML layers, the effective inductance can be further enhanced and the structure is more compact which is promising for radio frequency metamaterial designs in future.