%0 Journal Article
%T Improving Frequency Response of Microstrip Filters Using Defected Ground and Defected Microstrip Structures
%A Jose Alfredo Tirado-Mendez
%A Hildeberto Jardon-Aguilar
%A Ruben Flores-Leal
%A Edgar Alejandro Andrade-Gonzalez
%A Flavio Iturbide-Sanchez
%J PIER    C
%D 2010
%I EMW Publishing
%R 10.2528/PIERC10011505
%X In this work, the introduction of Defected Microstrip Structures and Defected Ground Structures is presented to improve the performance of a traditional stepped-impedance microstrip lowpass filter. The attenuation in the stop-band is enhanced by more than 15 dB and selectivity is increased, without modifying the insertion loss in the pass band. A comparison of characteristics in filters is made when the combination of Defected Ground and Defected Microstrip Structures, as well as when only the first one are used. A model of the Defected Microstrip Structure and the corresponding equations to obtain the equivalent lumped and distributed element values are also given.
%U http://www.jpier.org/pierc/pier.php?paper=10011505