The method proposed in this work establishes a very
simple and accurate procedure to find the new and reduced
dimensions of conventional lines when a defect is
introduced in the microstrip structure. These applications
include filters, stubs and patch antennas among other
microstrip circuits. To achieve the method, it is necessary to
find the electrical length introduced in a microstrip line
when a DMS unit-cell (or several unit-cells) are employed
[5]. Every circuit based on transmission lines presents an
electrical length, and for microstrip lines the electrical
length is given by