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Study of a Dielectric Ceramic Waveguide Filter with Asymmetric Transmission Zeros by Using Cascaded Trisection
New Phys.: Sae Mulli 2017; 67: 1432~1437
Published online December 29, 2017;
© 2017 New Physics: Sae Mulli.

Seungwan KIM1, Shant ARAKELYAN1, Kiejin LEE*1, Jongchel KIM2, Deokjoon CHA3

1 Department of Physics, Sogang University, Seoul 04107, Korea
2 Ricci Microwave Co.~Ltd., Daejeon 34113, Korea
3 Department of Physics, Kunsan National University, Gunsan 54150, Korea
Correspondence to:
Received September 29, 2017; Revised October 25, 2017; Accepted October 25, 2017.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
We studied dielectric ceramic waveguide filters using cascade trisection (CT) cross-coupled structures with an odd number of resonators between non-adjacent resonators. A dielectric ceramic waveguide (DCW) filter was designed based on the asymmetric attenuation pole in the desired frequency band. The DCW consisted of rectangular ceramic resonators with an even number of resonators between non-adjacent resonators. DCW filters satisfy the demands for selectivity, band rejections, and pass band insertion loss. For the multiple coupled resonator filters, the extraction of circuit elements with conversion to a coupling matrix was described. The designed DCW filter agreed with the simulation results.
PACS numbers: 84.30.Vn
Keywords: Dielectric ceramic, Waveguide, Filter, Asymmetric Transmission zeros, Cascaded trisection

April 2018, 68 (4)
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