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Polymer-based 3-D printed 140-220 GHz low-cost quasi-optical components and integrated subsystem assembly

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Title: Polymer-based 3-D printed 140-220 GHz low-cost quasi-optical components and integrated subsystem assembly
Authors: Shin, S
Shang, X
Ridler, N
Lucyszyn, S
Item Type: Journal Article
Abstract: Few examples of individual polymer-based 3-D printed quasi-optical component types have been previously demonstrated above ca. 100 GHz. This paper presents the characterization of polymer-based 3-D printed components and complete subsystems for quasi-optical applications operating at G-band (140 to 220 GHz). Two low-cost consumer-level 3-D printing technologies (vat polymerization and fused deposition modeling) are employed, normally associated with microwave frequencies and longer wavelength applications. Here, five different quasi-optical component types are investigated; rectangular horn antennas, 90° off-axis parabolic mirrors, radiation absorbent material (RAM), grid polarizers and dielectric lenses. As an alternative to conventional electroplating, gold-leaf gilding is used for the polarizer. A detailed investigation is undertaken to compare the performance of our 3-D printed antennas, mirrors and RAM with their commercial equivalents. In addition, a fully 3-D printed, RAM-lined housing with central two-axis rotational platform is constructed for performing two-port measurements of a quasi-optical horn-mirror-polarizer-mirror-horn subsystem. Measured results generally show excellent performances, although the grid polarizer is limited by the minimum strip width, separation distance and metallization thickness. The ultra-low cost, `plug and play' housing is designed to give a fast measurement setup, while minimizing misaligning losses. Its RAM lining is designed to suppress reflections due to diffraction from components under test that may cause adverse multi-path interference. Our work investigates each component type at G-band and integrates them within subsystem assemblies; operating at frequencies well above those normally associated with low-cost consumer-level 3-D printing technologies. This opens-up new opportunities for rapid prototyping of complete low-cost front-end quasi-optical upper-millimeter-wave subsystems.
Issue Date: 19-Feb-2021
Date of Acceptance: 3-Feb-2021
URI: http://hdl.handle.net/10044/1/87765
DOI: 10.1109/ACCESS.2021.3057606
ISSN: 2169-3536
Publisher: Institute of Electrical and Electronics Engineers
Start Page: 28020
End Page: 28038
Journal / Book Title: IEEE Access
Volume: 9
Issue: 1
Copyright Statement: © 2021 The Authors. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/
Sponsor/Funder: UK Space Agency
UK Space Agency
UK Space Agency
Funder's Grant Number: CT11834
PO No: 454400
Keywords: Science & Technology
Computer Science, Information Systems
Engineering, Electrical & Electronic
Computer Science
Horn antennas
Random access memory
Antenna measurements
Additive manufacturing
3-D printing
horn antenna
parabolic mirror
grid polarizer
dielectric lens
08 Information and Computing Sciences
09 Engineering
10 Technology
Publication Status: Published
Open Access location: https://ieeexplore.ieee.org/document/9349430
Online Publication Date: 2021-02-08
Appears in Collections:Electrical and Electronic Engineering

This item is licensed under a Creative Commons License Creative Commons