A Sierpinski fractal-based dual-mode bandpass filter

作者：Weng Min Hang; Lee Der Sun; Yang Ru Yuan^*; Wu Hung Wei; Liu Chia Ling

来源：Microwave and Optical Technology Letters, 2008, 50(9): 2287-2289.

DOI：10.1002/mop.23641

• fractal
• dual-mode
• bandpass filter
• microstrip
• Sierpinski

In this letter, we propose a new microstrip dual mode bandpass filter (BPF) using a 3rd order Sierpinski fractal-based resonator (SFR). The different order SFRs are generated from the conventional square patch by using an iterative Sierpinski generator method. In this article, a 3rd order SFR is used to design a high performance dual mode BPF due to its miniaturized property. By adding a perturbation element at the corner of the SFR, the dual mode frequency response can be found. A miniature and low insertion dual-mode BPF centered at 2.4 GHz using the proposed 3rd SFR is designed, fabricated, and characterized to verify the design concept.

• 出版日期2008-9