  We present numerical results on the transmission properties of the
left-handed materials (LHM) and split-ring resonators (SRR). The simulation
resultsare in qualitative agreement with experiments. The dependence of the
transmission through LHM on the real and imaginary part of the electric
permittivity of the metal, the length of the system, and the size of the unit
cell are presented. We also study the dependence of the resonance frequency of
the array of SRR on the ring thickness, inner diameter, radial and azimuthal
gap, as well as on the electrical permittivity of the board and the embedding
medium, where SRR resides. Qualitatively good agreement with previously
published analytical results is obtained.
