Artificial magnetic metamaterial design by using spiral resonators

Abstract

A metallic planar particle, that will be called spiral resonator ͑SR͒, is introduced as a useful artificial atom for artificial magnetic media design and fabrication. A simple theoretical model which provides the most relevant properties and parameters of the SR is presented. The model is validated by both electromagnetic simulation and experiments. The applications of SR's include artificial negative magnetic permeability media ͑NMPM͒ and left-handed-media ͑LHM͒ design. The main advantages of SR's for such purpose are small electrical size at resonance, absence of magnetoelectric coupling ͑thus avoiding bianisotropic effects in the continuous medium made of these particles͒, and easy fabrication. Experimental confirmation of NMPM and LHM behavior using SR's is also reported.

Magnetic localized surface plasmons

“…Spiral structures have been traditionally used as frequency-independent antennas or for polarization control at low frequencies [33][34][35]. More recently, spiral-based metamaterials like Swiss rolls [15] or one-spiral resonators [36,37] have been introduced in order to improve the magnetic response of split-ring resonators [15]. However, the physical principle of our spiral structure is different, as its design is intended to mimic the EM response of a corrugated cylinder with shallow grooves and filled with a dielectric.…”

`A Novel Design Algorithm' and Practical Realization of Rectangular Patch Antenna Loaded With SNG Metamaterial

“…In other directions, relative permeability experienced by other magnetic field components will be that of free space (µ 0 ). Although SRRs or MSRRs can be used in this purpose, we have used SRs (Figure 10) for the following reasons [15]: (1) SR's are easy to manufacture using well-known and relatively cheap technologies. (2) The absence of the necessity of fabricating narrow slots between the stripes.…”

Development of Novel Tunable Dual-Band Negative Index Metamaterial Using Open Stub-Loaded Stepped-Impedance Resonator

“…Since the success of metamaterial design mostly depends on the shape and the geometry of the unit cell, numerous novel methods have been proposed to investigate the potential applications [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. The majority of the aforementioned metamaterial studies focused on achieving the desired electromagnetic response at a single frequency band.…”