Wire array metamaterial cavities and waveguides can be achieved by changing the resonance frequency of one or
more unit cell surrounding by unit cells don’t support the resonance for certain frequency and hence obtain signal
confinement only on the defect wires. Changing the resonance frequency of one or more unit cell was done in this
work by changing the length of the unit cell. We validate our approach in experiment and simulation with
electromagnetic waves in the microwave range.