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| Titre: | Comparative study of three shapes of DGS pattern and design of compact microstrip low-pass and band-pass filters |
| Auteur(s): | Challal, Mouloud
Labu, Frederick
Dehmas, Mokrane
Azrar, Arab |
| Mots-clés: | Defected ground structure (DGS)
low-pass filter (LPF) and band-pass filter (BPF) |
| Issue Date: | 2011 |
| Collection/Numéro: | Wseas transactions on circuits and systems/ Vol.10, N°12 (2011);pp. 413-422 |
| Résumé: | In this paper, three types of defected ground structure (DGS) units which are triangular-head (TH), rectangular-head (RH) and U-shape (US) are investigated and their characteristics are compared each other. Further, they are used in the design of low-pass filters (LPF) and band-pass filters (BPF) and the obtained performances are examined. The LPF employing RS-DGS geometry presents the advantages of compact size, low-insertion loss and wide stopband compared to the other filters. It provides a cutoff frequency at 2.5 GHz, a largest rejection band width of 20 dB from 2.98 to 8.76 GHz, a smallest transition region and a smallest sharpness response at the cutoff frequency. The BPF based on RS-DGS has the highest bandwidth (BW) of about 0.74 GHz and the lowest center frequency of 3.24 GHz whereas the other BPFs have BWs less than 0.7 GHz |
| URI: | http://dlibrary.univ-boumerdes.dz:8080/jspui/handle/123456789/256 |
| ISSN: | 1109-2734 |
| Appears in Collections: | Publications Internationales
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