Microwave and Optical Technology Letters · 2003 · 42 citations · 7 references
EngineeringElectrical EngineeringAntennasGround ImprovementMicrowave EngineeringFractal GeometryMicrostrip CircuitsMicrowave FiltersMicrowave Integrated CircuitsMicrowave Transmission LinesBandgap EngineeringDefected Ground StructuresFilter DesignFractal LatticesMicrostrip FiltersMicrostrip Low-pass FiltersMicrowave Filter Design
Abstract 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. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 453–456, 2003
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