电波科学学报2017，Vol.32Issue(6)：644-649,6.DOI:10.13443/j.cjors.2017072402
一种高选择性的宽带滤波功分器
Design of wideband bandpass power divider with high rejection level stopband
摘要
Abstract
In order to reduce the size of communication system,a wideband filtering power divider with high rejection level in the lower and upper stopband is proposed in this paper.Two bandpass filters (BPF) are utilized to replace the quarter-wavelength transmission line in the traditional Wilkinson power divider.A resistor is adequately arranged for isolation and impedance matching.Even-and odd-mode method is applied to obtain design equations of the proposed circuit.Finally,a prototype power divider with central frequency of 2.97 GHz,and the fractional bandwidth (FBW) of 62％ is designed and fabricated for verification.Measured results indicate the attenuation level is larger than 38.4 dB in the lower stopband,and larger than 31.4 dB (2.67 f0).关键词
功分器/滤波器/宽带/高选择性/微带Key words
power divider/filter/wideband/high selectivity/microstrip分类
信息技术与安全科学引用本文复制引用
吴绍炜,张宏映,李蓉,魏玉龙,李晋军,唐聪..一种高选择性的宽带滤波功分器[J].电波科学学报,2017,32(6):644-649,6.基金项目
国家863计划项目(2015AA * *0136) （2015AA * *0136）
