A novel fractal defected ground structure and its application to the low-pass filter

作者：Liu, HW^*; Li, ZF; Sun, XW

来源：Microwave and Optical Technology Letters, 2003, 39(6): 453-456.

DOI：10.1002/mop.11246

• defected ground structure
• bandgap
• fractal
• low-pass filter
• slow-wave
• selectivity
• Sierpinski carpet

A novel fractal defected ground structure (DGS) for the microstrip line is proposed. The DGS unit lattice is realized by replacing the etched rectangular holes in ground plane with a Sierpinski carpet. The proposed fractal DGS can provide better bandgap, slow-wave characteristics, and selectivity at cutoff than the conventional dumbbell-shaped DGS. Furthermore, the fractal DGS is applied effectively to design a low-pass filter (LPF). A comparison between simulation and measurement confirms the validity of the LPF configuration and design procedure. A simple structure and high-power handling capability, are obtained from the proposed LPF.

• 出版日期2003-12-20
• 单位上海交通大学; 中国科学院