Highly Miniaturized Multiband Bandpass Filter Design Based on a Stacked Spiral Resonator Structure
Highly Miniaturized Multiband Bandpass Filter Design Based on a Stacked Spiral Resonator Structure
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DOI：
10.1109/tmtt.2012.2187797
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发表时间：
2012-05-01
影响因子：
4.3
通讯作者：
Wu, Sung-Mao
中科院分区：
文献类型：
--
作者：
Chen, Chien-Hsun;Huang, Chien-Hsiang;Wu, Sung-Mao
本文介绍了一种用于设计非常紧凑的多频带带通滤波器的堆叠螺旋谐振器 (SSR) 结构。所提出的 SSR 结构的谐振频率可以通过设计螺旋几何形状并控制堆叠结构中的相互耦合来确定。然后，可以通过两个耦合的 SSR 之间不同层图案的间距来确定多个通带带宽。具有抽头线路馈电的输入/输出谐振器的几何形状经过充分设计，可以同时实现所有通带的匹配条件。此外，在每个通带两侧创建的多个传输零点提供了高阻带滚降率。
This paper describes a stacked spiral resonator (SSR) structure for designing very compact multiband bandpass filters. The resonant frequencies of the proposed SSR structure can be determined by designing the spiral geometry and controlling the mutual coupling in a stacked structure. The multiple passband bandwidths can then be determined by the spacing of different layer patterns between two coupled SSRs. An adequately designed geometry of the input/output resonator with a tapped-line feed can achieve matching conditions for all passbands simultaneously. Moreover, multiple transmission zeros created on both sides of each passband provide high stopband roll-off rates.