A COMPACT ULTRA-WIDEBAND BAND-PASS FILTER WITH DEFECTED GROUND STRUCTURE

作者：Chen Peng^*; Wei Feng; Shi Xiaowei; Huang Qiulin

来源：Microwave and Optical Technology Letters, 2009, 51(4): 979-981.

DOI：10.1002/mop.24234

• ultra-wideband
• band-pass filter
• defected ground structure
• multiple-mode resonator

In this article, a compact ultra-wideband (UWB) band-pass filter (BPF) with improved upper-stopband is presented. In this design, a novel multiple-made resonator (MMR) with two symmetrical loading stubs and three dumbbell-shaped defected ground structures (DGS) on the back of the filter improve the harmonic-suppression characteristic of conventional BPF. Combining these two structures, a new UWB BPF is fabricated and measured. Measured results show that the proposed BPF has wide bandwidth from 3.0 to 10.7 GHz and the insertion loss of the BPF is less than 1.0 dB in this bond. A wide stop-band bandwidth with 20 dB attenuation from 12 GHz lip to 20 GHz is achieved.

• 出版日期2009-4
• 单位西安电子科技大学