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Design and implementation of a band-pass filter using dielectric resonators with a new excitation structure

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3 Author(s)
M. J. Kazemi ; Isfahan University of Technology, Iran ; M. S. Dadash ; R. Safian

A Tchebychev band-pass filter is constructed by placing high-quality factor TE01δ mode dielectric ring resonators inside a cut-off rectangular waveguide. The focus is on the design process and practical realisation of the filter, which includes choosing optimum geometry of a dielectric resonator, enclosure dimensions and the excitation structure. A novel excitation structure is introduced, which provides high coupling. Also, a new orientation in mounting dielectric resonators in cavity is suggested, which helps in making the filter response more symmetric. The three-pole band-pass-fabricated filter exhibits a symmetrical response with small band-pass ripple.

Published in:

IET Microwaves, Antennas & Propagation  (Volume:5 ,  Issue: 12 )