Title :
A novel lowpass filter with ultra-wide stopband and improved q-factor performance using H-Defected Ground Structure (DGS)
Author :
Boutejdar, A. ; Amari, S. ; Elsherbini, A. ; Omar, A.S.
Author_Institution :
Univ. of Magdeburg, Magdeburg
Abstract :
In this paper, a novel compact wideband high-rejection LPF using H-defected ground structure(DGS) is presented The effect of the DGS H-slot on the Q factor characteristics is examined. Comparison between the new DGS LPF and conventional filters shows that the proposed filter with its simple geometric structure including only two H-cells guarantees a suppressed ripples passband and a very large section of a stopband From 2.5 to 16 GHz, the investigated DGS-LPF has a rejection level better than 20 dB. Measured results show good consistency with calculations.
Keywords :
low-pass filters; microstrip lines; H-defected ground structure; Q-factor performance; conventional filters; lowpass filter; suppressed ripples passband; ultra wide stopband; Circuits; Dielectric substrates; Etching; Filters; Inductance; Metamaterials; Microstrip; Periodic structures; Q factor; Resonant frequency;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4395802
