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Design and Implementation of a Triple-Mode Planar Filter

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7 Author(s)
Xi-Cheng Zhu ; State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing, P. R. China ; Wei Hong ; Ke Wu ; Hong-Jun Tang
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A novel planar triple-mode resonator is proposed and implemented by placing an additional metallic via at the center of a circular dual-mode substrate integrated waveguide (SIW) cavity resonator. The resonant frequency of the dominant mode in the SIW cavity increases remarkably and become close to the resonant frequencies of the TM110-similar mode. Three asymmetric bandpass filters utilizing this resonator are designed and fabricated. The measured results are in good agreement with the simulation results.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:23 ,  Issue: 5 )