Multi-mode multi-band bandpass filter using hexagonal patch resonator |
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| Authors: | Jian-Kang Xiao Yong Li Xiao-Peng Zu Wei Zhao |
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| Affiliation: | 1. School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, Chinaxiaojk@lzu.edu.cn;3. School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, China;4. Zhenjiang Police Station, Zhenjiang 212000, China |
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| Abstract: | Resonant performances of the hexagonal resonators are analysed, and new tri-mode tri-band bandpass filter which operates at 2.5/2.8, 5.2/5.5 and 7.9/8.5 GHz with insertion loss of no more than 1.3 dB is presented by using a single fractal hexagonal resonator. It shows with fractal-shaped defection in hexagonal patch, filter performance is greatly improved and dual and tri-band bandpass filters can be implemented. The tri-band designs are demonstrated by experiment. The new hexagonal filter has outstanding advantages of multiple-band operation, miniature size, simple and compact structure without resonator coupling gaps. All these features are quite useful for applications in RF circuits. |
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| Keywords: | hexagonal patch resonator fractal bandpass filter tri-mode tri-band |
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