A 3-D Printed Lightweight X-Band Waveguide Filter Based on Spherical Resonators

Cheng Guo; Xiaobang Shang; Michael J. Lancaster; Jun Xu

doi:10.1109/LMWC.2015.2427653

A 3-D Printed Lightweight X-Band Waveguide Filter Based on Spherical Resonators

Cheng Guo, Xiaobang Shang, Michael J. Lancaster, Jun Xu

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

72 Citations (Scopus)

966 Downloads (Pure)

Abstract

A fifth order X-band waveguide bandpass filter, based on spherical resonators, has been designed, and fabricated by 3-D printing. In comparison with rectangular waveguide, spherical resonators have a higher unloaded quality factor, but at the same time suffer from closer higher order modes. In this letter, a special topology has been proposed to relieve the impact of the first three higher order modes in the resonator and ultimately to achieve a good out-of-band rejection. Stereolithography based 3-D printing is used to build the filter structure from polymer and a 25 microns thick copper layer is deposited to the filter. The measurement result of the filter has an excellent agreement with the simulations. The filter is also considerably lighter than a similar metal filter.

Original language	English
Article number	7115191
Pages (from-to)	442-444
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	25
Issue number	7
Early online date	1 Jun 2015
DOIs	https://doi.org/10.1109/LMWC.2015.2427653
Publication status	Published - 2 Jul 2015

Bibliographical note

This paper won the 2017 Tatsuo Itoh Prize of the IEEE Microwave Theory and Techniques Society. This award recognizes the most significant contribution by a published paper in the IEEE Microwave and Wireless Components Letters Journal

Keywords

3-D printing
Filter
spherical resonators
stereolithography
waveguide

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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Cite this

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abstract = "A fifth order X-band waveguide bandpass filter, based on spherical resonators, has been designed, and fabricated by 3-D printing. In comparison with rectangular waveguide, spherical resonators have a higher unloaded quality factor, but at the same time suffer from closer higher order modes. In this letter, a special topology has been proposed to relieve the impact of the first three higher order modes in the resonator and ultimately to achieve a good out-of-band rejection. Stereolithography based 3-D printing is used to build the filter structure from polymer and a 25 microns thick copper layer is deposited to the filter. The measurement result of the filter has an excellent agreement with the simulations. The filter is also considerably lighter than a similar metal filter.",

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A 3-D Printed Lightweight X-Band Waveguide Filter Based on Spherical Resonators

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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