NDLI: Synthesis of UWB bandpass filter by multistage of one-wavelength commensurate SIRs

Content Provider	IEEE Xplore Digital Library
Author	Chun-Ping Chen Zhewang Ma Anada, T.
Copyright Year	2008
Description	Author affiliation: Dept. of Electron., Kanagawa Univ., Kanagawa (Chun-Ping Chen)
Abstract	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 of this 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 3.1 GHz to 10.6 GHz (fractional bandwidth is about 110%). The synthesized circuit model are further optimized by EM simulator, fabricated in microstrip 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 (especially in lower one) as well.
Starting Page	1247
Ending Page	1250
File Size	701927
Page Count	4
File Format	PDF
ISBN	9781424418794
DOI	10.1109/ICMMT.2008.4540660
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-21
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band pass filters Resonator filters Circuit synthesis Network synthesis Prototypes Filtering theory Impedance Ultra wideband technology Chebyshev approximation Equivalent circuits
Content Type	Text
Resource Type	Article

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