Technological Investigation of Metal 3D Printed Microwave Cavity Filters Based on Different Topologies and Materials

Povilas Vaitukaitis; Kenneth Nai; Jiayu Rao; Mustafa S. Bakr; Jiasheng Hong

doi:10.1109/TCPMT.2022.3231705

Technological Investigation of Metal 3D Printed Microwave Cavity Filters Based on Different Topologies and Materials

Povilas Vaitukaitis, Kenneth Nai, Jiayu Rao, Mustafa S. Bakr, Jiasheng Hong

Research output: Contribution to journal › Article › peer-review

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Abstract

This paper presents metal 3D printed wideband bandpass filters based on a deformed elliptical cavity resonator. The resonator can produce a wide stopband response by realising arbitrary real-frequency transmission zero at prescribed frequencies. The design procedure of canonical filtering functions is detailed. Six design examples of bandpass filters are presented to validate the design methodology. Three of the designed filters were metal 3D printed using Selective Laser Melting in AlSi10Mg and commercially pure copper for experimental verification. Copper filter prototypes were printed in one piece and electro-polished to improve the surface finish. Aluminium filters were printed in three different orientations to the wiper to investigate the influence on RF performance. All measured results have a good agreement with simulations. Furthermore, an in-depth review and discussion of Additive Manufacturing techniques for producing complex microwave components and strategies to mitigate the drawbacks of AM are given.

Original language	English
Pages (from-to)	2027-2037
Number of pages	11
Journal	IEEE Transactions on Components, Packaging and Manufacturing Technology
Volume	12
Issue number	12
Early online date	22 Dec 2022
DOIs	https://doi.org/10.1109/TCPMT.2022.3231705
Publication status	Published - Dec 2022

Keywords

AlSi10Mg
Band-pass filters
Metals
Microwave filters
Prototypes
Resonator filters
Three-dimensional displays
Waveguide lasers
copper
deformed cavity resonator
metal 3D printing
printing orientation
selective laser melting
waveguide filter
wide stopband
wideband bandpass filter

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1109/TCPMT.2022.3231705

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title = "Technological Investigation of Metal 3D Printed Microwave Cavity Filters Based on Different Topologies and Materials",

abstract = "This paper presents metal 3D printed wideband bandpass filters based on a deformed elliptical cavity resonator. The resonator can produce a wide stopband response by realising arbitrary real-frequency transmission zero at prescribed frequencies. The design procedure of canonical filtering functions is detailed. Six design examples of bandpass filters are presented to validate the design methodology. Three of the designed filters were metal 3D printed using Selective Laser Melting in AlSi10Mg and commercially pure copper for experimental verification. Copper filter prototypes were printed in one piece and electro-polished to improve the surface finish. Aluminium filters were printed in three different orientations to the wiper to investigate the influence on RF performance. All measured results have a good agreement with simulations. Furthermore, an in-depth review and discussion of Additive Manufacturing techniques for producing complex microwave components and strategies to mitigate the drawbacks of AM are given.",

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Technological Investigation of Metal 3D Printed Microwave Cavity Filters Based on Different Topologies and Materials

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Keywords

ASJC Scopus subject areas

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