After introducing the unit-cell in the microstrip line, the
substrate employed in the implementation presents an
apparent effective dielectric constant εec, which is larger
than the real effective dielectric constant εe. This apparent
permittivity provides the tool to explain how the dimensions
of microstrip circuits can be reduced, which means that for a
higher dielectric constant the wavelength is shorter as well
as the microstrip circuits, both being a function of this
parameter. Since the original microstrip lines have an
electrical length and introducing a DMS unit-cell into the
structure increases it, a new dimension must be found to
keep the electrical length equal to that of the non-defected
lines [9]. The new length that gives the original electrical
length for the microstrip line with DMS unit-cell is obtained
by employing new technique