Compact UWB Bandpass Filter With Improved Upper-Stopband Performance Using Multiple-Mode Resonator
In this paper,a novel ultra-wideband (UWB) bandpass filter (BPF) with compact size and improved upper-stopband performance has been studied and designed using multiple-mode resonator (MMR).The MMR is formed by attaching three pairs of ring open stubs in shunt to a high impedance microstrip line.By simply adjusting the radius of the circles of the ring stubs,the resonant modes of the MMR can be roughly allocated within the 3.1-10.6 GHz UWB band while suppressing the spurious harmonics in the upper-stopband.In order to enhance the coupling degree,two interdigital coupled-lines are used in the input and output sides.Thus,a predicted UWB passband is realized.Meanwhile,the insertion loss is higher than 20.0 dB in the upper-stopband from 11.7 to 33.5 GHz.The design is successfully realized in theory and verified by full-wave EMsimulation.
Binyan Yao Yonggang Zhou Lin Li Qunsheng Cao
Department of Information Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
国际会议
昆明
英文
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）