Design of Dual-Passband Cross-Coupled Filter Using Stub-Loaded Open-Loop Resonators

被引：0
作者：
Li, Jiankang [1 ]
Chen, Chunhong [1 ]
Wu, Wen [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Ministerial Key Lab, JGMT, Nanjing 210094, Jiangsu, Peoples R China
来源：
APMC: 2009 ASIA PACIFIC MICROWAVE CONFERENCE, VOLS 1-5 | 2009年
关键词：
Cross-coupled; dual-bandpass filter; open-loop resonator; open stub; chebyshev functions;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Compact open-loop resonators loaded by open stubs are used to design cross-coupled filters with a dual-passband response of chebyshev function. The second passband of the proposed filter is obtained by tuning higher resonant modes of the open-loop resonator by changing the stub length and position. Proper couplings required for the two desired/designed frequencies are obtained by tuning the relative open position of open-loop resonator and the distance between the resonators. Required external coupling is obtained by adjusting the tapping position and dual-frequencies transformer. The S-parameter of the dua-passband filter has been measured. The results show good agreement with the simulation ones. Furthermore, the proposed filter has two transmission zeros and exhibits high skirt selectivity.
引用
收藏
页码：929 / 932
页数：4
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