An E-Shape DGS for Band-Stop Filter with High Q-Factor

An E-shape defected ground structure for using in high Q band-stop filters is investigated. The Q-factor of the E-shape DGS is compared to Q-factor of the U-shape DGS with the same area and is shown that the Q-factor of the novel DGS is higher in compared to U-shape DGS. A band-stop filter using three cascaded E-shape DGS is designed. The simulation results show that the Q-factor of 37.7 can be obtained for a band rejection filter with three cascaded E-shape DGS.

کلیدواژه ها:

Defected ground structure ، Q-factor ، equivalent circuit