NDLI: Compct UWB bandpass filter using microstrip and coplanar waveguide back-to-back coupled structure

Content Provider	IEEE Xplore Digital Library
Author	Huizhen Qian Xun Luo Xiangyu Song Wan Luo Jian-Guo Ma
Copyright Year	2009
Description	Author affiliation: School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China (Huizhen Qian; Xun Luo; Xiangyu Song; Wan Luo; Jian-Guo Ma)
Abstract	A compact ultra-wideband (UWB) bandpass filter (BPF) using microstrip and coplanar waveguide (CPW) back-to-back coupled structure is proposed. First, the detached-mode resonator on the CPW layer is formed to allocate three resonant frequencies to meet the concern of UWB operation. Then, microstrip and CPW back-to-back coupled structure is introduced to achieve the UWB limit. To further improve the stopband performance of the proposed UWB BPF, the periodic serration resonator (PSR) on the microstrip layer is employed. The upper stopband bandwidth could be finely tuned by adjusting the coupled area of the PSRs. To verify the feasibility of the mechanism above, a filter is fabricated and tested. The measured results exhibit good performance including a small insertion loss less than 0.52 dB, good return loss below −18 dB in the midband. Specifically, the upper stopband is observed from 11.5 to 17.3 GHz, and a stopband rejection level below −21 dB.
Starting Page	247
Ending Page	249
File Size	5340541
Page Count	3
File Format	PDF
ISBN	9781424442973
DOI	10.1109/EDSSC.2009.5394274
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-12-25
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Band pass filters Microstrip filters Coplanar waveguides Ultra wideband technology Resonant frequency Microstrip resonators Bandwidth Resonator filters Testing Loss measurement ultra-wideband (UWB) Back-to-back coupled bandpass filter (BPF) coplanar waveguide (CPW) multiple-mode resonator (MMR) periodic serration resonator (PSR)
Content Type	Text
Resource Type	Article

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