Theoretical design of wideband filters with attenuation poles using improved parallel-coupled three-line units
Theoretical design of wideband filters with attenuation poles using improved parallel-coupled three-line units
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DOI：
10.1109/mwsym.2012.6258424
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发表时间：
2012-06
期刊：
影响因子：
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通讯作者：
Chun-Ping Chen;J. Oda;T. Anada;Zhewang Ma;S. Takeda
中科院分区：
文献类型：
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作者：
Chun-Ping Chen;J. Oda;T. Anada;Zhewang Ma;S. Takeda
A theoretical filter-design-scheme is proposed for a wideband filter consisting of an compound parallel-coupled three-line unit. After revealing the work mechanism of the proposed three-line unit, the design formulae are derived correspondingly. To validate the proposed techniques, a wideband filter with a bandwidth of 3–5GHz (FBW:50%) is designed as an example. The measured frequency responses of the filter agree well with the predicted ones, which validates the effectiveness of the newly-proposed three-line unit and the corresponding design scheme.
