Dual-band bandpass filters using stub-loaded resonators
Dual-band bandpass filters using stub-loaded resonators
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DOI：
10.1109/lmwc.2007.901768
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发表时间：
2007-08-01
影响因子：
3
通讯作者：
Li, Si-Min
中科院分区：
文献类型：
--
作者：
Zhang, Xiu Yin;Chen, Jian-Xin;Li, Si-Min
本文介绍了一种采用新型谐振器的双频带通滤波器。通过理论分析和全波仿真，发现该SLR具有偶模谐振频率可灵活控制而奇模谐振频率固定的优点。基于所提出的SLR，实现了具有三个传输零点的双频带滤波器。为了进一步提高滤波器的选择性，通过引入支线，设计了一种在两个通带两侧都有四个传输零点的滤波器。实测结果验证了所提出的设计。
Dual-band bandpass filters using novel stub-loaded resonators (SLRs) are presented in this letter. Characterized by both theoretical analysis and full-wave simulation, the proposed SLR is found to have the advantage that the even-mode resonant frequencies can be flexibly controlled whereas the odd-mode resonant frequencies are fixed. Based on the proposed SLR, a dual-band filter is implemented with three transmission zeros. To further improve the selectivity, a filter with four transmission zeros on either side of both passbands is designed by introducing spur-line. The measured results validate the proposed design.