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一种具有陷波特性的小型化超宽带功分器
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摘要
针对超宽带(UWB)系统易受窄带信号干扰问题,本文提出了一种小型化陷波超宽带功分器,在Wilkinson功分器的基础上,采用扇形结构的阶跃阻抗开路枝节,并通过平行三线耦合到输出端口展宽带宽,同时在接地面蚀刻二阶开环谐振器(CSR2),生成缺陷地结构(DGS),实现陷波特性。通过分析仿真,所设计的该超宽带功分器具有较宽的工作频带,且在5.8GHz处形成陷波,与预期结果吻合。
A new ultra wideband(UWB) power divider with notched band is proposed in this paper according to that UWB system is easy to be interfered with the narrow-band signal. On the basis of Wilkinson power Divider, This divider is formed by installing a pair of sector stepped-impedance open-circuited stubs and three parallel-coupled lines to two symmetrical output ports to broaden the bandwidth, while the rejection band is realized by etching the Split Ring Resonator(CSR2) on the ground plane and generating the defect ground structure(DGS). The simulated results show the effectiveness of the ultra-wideband power divider has a wide operating frequency band, and formed a notch at 5.8GHz.
引文
[1]S.W.Wong and L.Zhu,“Ultra-wideband power divider with good in-band splitting and isolation performances,”IEEE Microw.Wireless Compon.Lett.,vol.18,no.8,pp.518-520,Aug.2008.
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    [3]郭雪影.小型化超宽带滤波器和功分器设计.研究[D].安徽:中国科学技术大学,2015
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