Design Margin of Millimeter-wave Ultra-wideband 0-180° Analog Delay Line with Insertion Loss Less Than 2 dB

J. F. Li*

*此作品的通讯作者

科研成果: 书/报告/会议事项章节会议稿件同行评审

2 引用 (Scopus)

摘要

Achieving a liquid crystal-based millimeter-wave low-loss (e.g., less than 2 dB) 0-180° continuously variable delay line at 60 GHz band is a highly valuable but technically demanding task. This study deals with the design margin investigation based on experimental and computational analyses of an inverted microstrip (IMS) passive delay line enabled by nematic liquid crystals (NLC) as highly variable dielectrics covering 1-67 GHz operation. The IMS true-time-delaying device is constructed with a 125 μm-thick NLC layer (GT3-24002) that encloses in part of a copper core line measuring 220 μm-wide, 17 μm-thick, and 1.35 cm-long. Free from metal surface roughness and other manufacturing tolerance-induced losses, the device achieves a differential phase variation of 0-180° with a maximum insertion loss checked against a threshold of 2 dB for various industrial applications. At 30 GHz, it is possible to allocate a margin of 1.14 dB for unaccounted losses, whereas at 60 GHz, this margin decreases to 0.4 dB, posing a greater challenge in achieving the objective. The quantification of the performance metrics offers significant insights into the optimization of IMS delay lines that utilize NLC as a tunable dielectric medium for applications that are critical to mission success.

源语言英语
主期刊名16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2023 - Proceedings
出版商Institute of Electrical and Electronics Engineers Inc.
ISBN(电子版)9798350339406
DOI
出版状态已出版 - 2023
活动16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2023 - Guangzhou, 中国
期限: 31 8月 20233 9月 2023

出版系列

姓名16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2023 - Proceedings

会议

会议16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2023
国家/地区中国
Guangzhou
时期31/08/233/09/23

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引用此

Li, J. F. (2023). Design Margin of Millimeter-wave Ultra-wideband 0-180° Analog Delay Line with Insertion Loss Less Than 2 dB. 在 16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2023 - Proceedings (16th UK-Europe-China Workshop on Millimetre Waves and Terahertz Technologies, UCMMT 2023 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/UCMMT58116.2023.10310430