Compact Self-Supportive Filters Suitable for Additive Manufacturing

Abolfazl Mostaani; Yi Wang; Lu Qian; Abd el-Moez a. Mohamed; Moataz m. Attallah; Talal Skaik

doi:10.1109/TCPMT.2023.3332678

Compact Self-Supportive Filters Suitable for Additive Manufacturing

Abolfazl Mostaani, Yi Wang^*, Lu Qian, Abd el-Moez a. Mohamed, Moataz m. Attallah, Talal Skaik

^*Corresponding author for this work

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Abstract

An irregular-hexagonal resonator geometry is proposed for additively manufactured microwave filters. This geometry allows closely packed resonators to form very compact filters of various topologies fulfilling transfer functions with transmission zeros. It also minimizes the overhangs and allows vertical printing along the direction of the input/output ports, without any internal support structure and with a much-reduced profile. The characteristics of the resonator and the trade-off between compactness and quality factor has been analyzed. Three bandpass filters have been demonstrated. Two of them are designed with non-resonating node topologies with fractional bandwidths of 5% and 1%, respectively, using the step-tuning technique. All three filters are fabricated using selective laser melting (SLM) technique. The performance of the fabricated filters is compared with the EM simulation. Very good agreement has been achieved for all three filters. The effectiveness of tuning has also been demonstrated. The resonator structure has offered high printability in the manufacturing and high level of modularity and flexibility in the design.

Original language	English
Pages (from-to)	1-1
Journal	IEEE Transactions on Components, Packaging and Manufacturing Technology
DOIs	https://doi.org/10.1109/TCPMT.2023.3332678
Publication status	Published - 14 Nov 2023

Bibliographical note

This work is supported by the UK Engineering and Physical Science Research Council under grant EP/S013113/1.

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10.1109/TCPMT.2023.3332678Licence: Other (please provide link to licence statement

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This is the accepted author manuscript of the following article: A. Mostaani, Y. Wang, L. Qian, A. E. -M. A. Mohamed, M. M. Attallah and T. Skaik, "Compact Self-Supportive Filters Suitable for Additive Manufacturing," in IEEE Transactions on Components, Packaging and Manufacturing Technology, doi: 10.1109/TCPMT.2023.3332678. © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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https://ieeexplore.ieee.org/document/10318140/

Towards a 3D Printed Terahertz Circuit Technology
Wang, Y. & Lancaster, M.
Engineering & Physical Science Research Council
1/07/19 → 30/04/23
Project: Research Councils

Cite this

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title = "Compact Self-Supportive Filters Suitable for Additive Manufacturing",

abstract = "An irregular-hexagonal resonator geometry is proposed for additively manufactured microwave filters. This geometry allows closely packed resonators to form very compact filters of various topologies fulfilling transfer functions with transmission zeros. It also minimizes the overhangs and allows vertical printing along the direction of the input/output ports, without any internal support structure and with a much-reduced profile. The characteristics of the resonator and the trade-off between compactness and quality factor has been analyzed. Three bandpass filters have been demonstrated. Two of them are designed with non-resonating node topologies with fractional bandwidths of 5% and 1%, respectively, using the step-tuning technique. All three filters are fabricated using selective laser melting (SLM) technique. The performance of the fabricated filters is compared with the EM simulation. Very good agreement has been achieved for all three filters. The effectiveness of tuning has also been demonstrated. The resonator structure has offered high printability in the manufacturing and high level of modularity and flexibility in the design.",

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AU - Attallah, Moataz m.

AU - Skaik, Talal

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Compact Self-Supportive Filters Suitable for Additive Manufacturing

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Towards a 3D Printed Terahertz Circuit Technology

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