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A novel lowpass filter with ultra-wide stopband and improved q-factor performance using H-Defected Ground Structure (DGS)

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4 Author(s)
A. Boutejdar ; Chair of Electrical Engineering, University of Magdeburg, Germany ; S. Amari ; A. Elsherbini ; A. S. Omar

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.

Published in:

2007 IEEE Antennas and Propagation Society International Symposium

Date of Conference:

9-15 June 2007