Zakriti, A., N. A. Touhami, K. Bargach, M. Lamsalli, and M. Essaidi. “IMPROVEMENT OF BAND-WIDTH PERFORMANCE OF HAIPRPIN BAND-PASS FILTER USING DEFECTED GROUND STRUCTURES”. European Scientific Journal, ESJ, Vol. 9, no. 24, Aug. 2013, doi:10.19044/esj.2013.v9n24p%p.