(a) Illustration of the experimental structure. The dashed box indicates the unit cell. (b) Two-dimensional view of the unit cell with w = 0.5, L= 2.3, d = 0.5, and s = 0.5 mm. The thicknesses of the SRRs and the PCB substrate are 0.035 mm and 0.8, respectively. The periodicity is 7.2 mm in both the x and y directions.
(a) Simulated and measured transmission spectra at incident angles of 0° and 40° with a dielectric loss tangent of 0.035 for the PCB substrate. (b) Simulated transmission spectra at various incident angles with a dielectric loss tangent of 0.0025 for the PCB substrate.
(a, b) z-component distributions of the magnetic field at the frequency of maximum transmission with incident angles of 0° and 30°, respectively. (c,d) x-component distributions of the electric field at the frequency of maximum transmission with incident angles of 0° and 30°, respectively.
(a) Dependence of the quality factor, group index, and maximum transmission on the angle of incidence in the range of 5° to 40°. (b) Dependence of the group index on the frequency at an incident angle of 15°.
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