Synthesis of UWB Bandpass Filter by Multistage of One-Wavelength Commensurate SIRs
A novel filter prototype composed of multistage of stepped impedance resonators (SIRs) is proposed to realize the ultra-wideband bandpass (UWB) filter. The relation between the modes number and stage number of resonators is firstly discussed,followed by the derivation of the corresponding Chebyshev filtering function. Furthermore,the equivalent circuit model ofThis new filter prototype is established based on the transmission-line theory for filter synthesis. As an example,a FCC UWB filter is synthesized with the proposed filter prototype to have the passband from 3.1GHz to 10.6GHz (fractional bandwidth is about 110％). The synthesized circuit model are further optimized by EM simulator,fabricated inmicrostrip line and characterized by network analyzer. The good agreement between the measured and predicted frequency responses validates the effectiveness of newly proposed synthesis techniques.In addition,the designed filter exhibits good characteristics of comparatively low insertion loss,quite sharp skirts,very flat group delay and good stopband (especiallyInlower one) as well.
Chun-Ping Chen Zhewang Ma Tetsuo Anada
Dept.of Electronics&Informatics Engineering &High-Tech Research Center,Kanagawa University,221-8686 Graduate School of Science and Engineering,Saitama University,338-8570,Japan
国际会议
2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)
南京
英文
1247-1250
2008-04-21（万方平台首次上网日期，不代表论文的发表时间）