Comparison of defected ground structure (DGS) and defected microstrip structure (DGS) behavior at high frequencies

A novel Defected Microstrip Structure is proposed, which behaves in a similar way than a conventional unit cell Defected Ground Structure (DGS) concerning band-stop response and selectivity. As a difference from the DGS, the DMS structure frequency response is almost the same when the microstrip length varies. To show this fact, a λ2 and a λ4 50 Ohms microstrips were used for different DGS and DMS cell sizes.