Abstract
A compact planar dual-band bandpass filter (BPF), which consists of a hexagon resonator and a Y-type stepped- impedance stub (Y-SIS), is introduced. The Y-SIS, acting as an effective perturbation element with two functions, could excite a new mode, and split the second-order degenerate modes of hexagon resonator to form the second passband with three visible transmission poles, simultaneously. The proposed BPF is designed, fabricated and tested. The measured results, in good agreement with the simulation values, demonstrated that the proposed filter is quite suitable for PCS and WiMAX applications.
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Acknowledgments
This work was supported in part by graduate scientific research and innovation foundation of Chongqing, China contract numbers CYS16020, in part by the National Natural Science Foundation of China contract numbers 61471072 and 91438104, in part by the focus project of Chongqing for application and development contract number cstc2013yykfB40009, in part by the Fundamental Research Funds for the Central Universities contract numbers 106112015CDJZR165510 and 106112015CDJXY160007, and in part by China Postdoctoral Science Foundation contract number 2016M590860.
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Tang, MC., Shi, T., Chen, S. et al. A Compact Triple-Mode Filter with Y-Type Stepped-Impedance Stub (Y-SIS) for PCS and WiMAX Applications. Wireless Pers Commun 94, 1331–1339 (2017). https://doi.org/10.1007/s11277-016-3684-z
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DOI: https://doi.org/10.1007/s11277-016-3684-z