79 GHz Meandering Enclosed-coplanar Variable Delay Lines in Liquid Crystals Encapsulated within Independent and Shared Cavities

Jinfeng Li

doi:10.1109/ISAP53582.2022.9998660

79 GHz Meandering Enclosed-coplanar Variable Delay Lines in Liquid Crystals Encapsulated within Independent and Shared Cavities

Jinfeng Li

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

New meandering enclosed-coplanar waveguide (MECPW) millimetre-wave variable delay lines are designed with a bent core line interfacing a shared layer of highly anisotropic liquid crystals (LC) GT7-29001. Impacting tunable dielectric's volume, phase-tuning range, cost, and insertion loss, two device designs are proposed, featuring an independent cavity, and a shared cavity, respectively. Up to 5 degrees/dB of improvement in the figure-of-merit is foreseen at 79 GHz by using the shared-cavity design, with a further benefit of reducing the required LC filling volume by 1.6% per device. The size and cost reductions are promising for mass production targeting a phased array feed.

Original language	English
Title of host publication	2022 International Symposium On Antennas And Propagation (isap)
Publisher	IEEE
Pages	457-458
Number of pages	2
ISBN (Electronic)	978-1-6654-7962-2
DOIs	https://doi.org/10.1109/ISAP53582.2022.9998660
Publication status	Published - 2 Jan 2023
Externally published	Yes
Event	27th International Symposium on Antennas and Propagation (ISAP) - Sydney, Australia Duration: 31 Oct 2022 → 3 Nov 2022

Publication series

Name	Ieee Antennas And Propagation Society International Symposium

Conference

Conference	27th International Symposium on Antennas and Propagation (ISAP)
Country/Territory	Australia
City	Sydney
Period	31/10/22 → 3/11/22

Keywords

79 GHz
Delay line
Insertion loss
Liquid crystal
mm-Wave
passive RF components
Phased array antenna

Access to Document

10.1109/ISAP53582.2022.9998660

Cite this

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title = "79 GHz Meandering Enclosed-coplanar Variable Delay Lines in Liquid Crystals Encapsulated within Independent and Shared Cavities",

abstract = "New meandering enclosed-coplanar waveguide (MECPW) millimetre-wave variable delay lines are designed with a bent core line interfacing a shared layer of highly anisotropic liquid crystals (LC) GT7-29001. Impacting tunable dielectric's volume, phase-tuning range, cost, and insertion loss, two device designs are proposed, featuring an independent cavity, and a shared cavity, respectively. Up to 5 degrees/dB of improvement in the figure-of-merit is foreseen at 79 GHz by using the shared-cavity design, with a further benefit of reducing the required LC filling volume by 1.6\% per device. The size and cost reductions are promising for mass production targeting a phased array feed.",

keywords = "79 GHz, Delay line, Insertion loss, Liquid crystal, mm-Wave, passive RF components, Phased array antenna",

author = "Jinfeng Li",

year = "2023",

month = jan,

day = "2",

doi = "10.1109/ISAP53582.2022.9998660",

language = "English",

series = "Ieee Antennas And Propagation Society International Symposium",

publisher = "IEEE",

pages = "457--458",

booktitle = "2022 International Symposium On Antennas And Propagation (isap)",

note = "27th International Symposium on Antennas and Propagation (ISAP) ; Conference date: 31-10-2022 Through 03-11-2022",

}

Li, J 2023, 79 GHz Meandering Enclosed-coplanar Variable Delay Lines in Liquid Crystals Encapsulated within Independent and Shared Cavities. in 2022 International Symposium On Antennas And Propagation (isap). Ieee Antennas And Propagation Society International Symposium, IEEE, pp. 457-458, 27th International Symposium on Antennas and Propagation (ISAP), Sydney, Australia, 31/10/22. https://doi.org/10.1109/ISAP53582.2022.9998660

79 GHz Meandering Enclosed-coplanar Variable Delay Lines in Liquid Crystals Encapsulated within Independent and Shared Cavities. / Li, Jinfeng.
2022 International Symposium On Antennas And Propagation (isap). IEEE, 2023. p. 457-458 (Ieee Antennas And Propagation Society International Symposium).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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N2 - New meandering enclosed-coplanar waveguide (MECPW) millimetre-wave variable delay lines are designed with a bent core line interfacing a shared layer of highly anisotropic liquid crystals (LC) GT7-29001. Impacting tunable dielectric's volume, phase-tuning range, cost, and insertion loss, two device designs are proposed, featuring an independent cavity, and a shared cavity, respectively. Up to 5 degrees/dB of improvement in the figure-of-merit is foreseen at 79 GHz by using the shared-cavity design, with a further benefit of reducing the required LC filling volume by 1.6% per device. The size and cost reductions are promising for mass production targeting a phased array feed.

AB - New meandering enclosed-coplanar waveguide (MECPW) millimetre-wave variable delay lines are designed with a bent core line interfacing a shared layer of highly anisotropic liquid crystals (LC) GT7-29001. Impacting tunable dielectric's volume, phase-tuning range, cost, and insertion loss, two device designs are proposed, featuring an independent cavity, and a shared cavity, respectively. Up to 5 degrees/dB of improvement in the figure-of-merit is foreseen at 79 GHz by using the shared-cavity design, with a further benefit of reducing the required LC filling volume by 1.6% per device. The size and cost reductions are promising for mass production targeting a phased array feed.

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KW - Insertion loss

KW - Liquid crystal

KW - mm-Wave

KW - passive RF components

KW - Phased array antenna

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79 GHz Meandering Enclosed-coplanar Variable Delay Lines in Liquid Crystals Encapsulated within Independent and Shared Cavities

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Keywords

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