A new bandstop filter using artificial defected ground structures with compact size and low radiation
Journal
2010 IEEE 19th Conference on Electrical Performance of Electronic Packaging and Systems, EPEPS 2010
Pages
89-92
Date Issued
2011
Author(s)
Abstract
A novel defected ground structure (DGS) with mushroom structures is proposed. This structure is a three-layer structure composed of a patterned metal plane on the top layer and mushroom structures occupying the second and the third layer. It can be applied to a multilayer structure with lower radiation compared with conventional DGS due to its well shielding. Based on slow wave characteristic, this proposed structure possesses a more compact size than conventional DGS does and still keeps resonance property. A bandstop filter is fabricated on FR4 board and the center frequency is designed at 3 GHz. It is shown that the filter has a size reduction over 28.7% in contrast to bandstop filter with conventional DGS.
SDGs
Type
conference paper