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^*

^*Corresponding author for this work

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

5 Citations (Scopus)

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°/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 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	457-458
Number of pages	2
ISBN (Electronic)	9781665479622
DOIs	https://doi.org/10.1109/ISAP53582.2022.9998660
Publication status	Published - 2022
Externally published	Yes
Event	27th International Symposium on Antennas and Propagation, ISAP 2022 - Sydney, Australia Duration: 31 Oct 2022 → 3 Nov 2022

Publication series

Name	2022 International Symposium on Antennas and Propagation, ISAP 2022

Conference

Conference	27th International Symposium on Antennas and Propagation, ISAP 2022
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

Li, J. (2022). 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 2022 (pp. 457-458). (2022 International Symposium on Antennas and Propagation, ISAP 2022). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISAP53582.2022.9998660

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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°/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",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 27th International Symposium on Antennas and Propagation, ISAP 2022 ; Conference date: 31-10-2022 Through 03-11-2022",

year = "2022",

doi = "10.1109/ISAP53582.2022.9998660",

language = "English",

series = "2022 International Symposium on Antennas and Propagation, ISAP 2022",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "457--458",

booktitle = "2022 International Symposium on Antennas and Propagation, ISAP 2022",

address = "United States",

}

Li, J 2022, 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 2022. 2022 International Symposium on Antennas and Propagation, ISAP 2022, Institute of Electrical and Electronics Engineers Inc., pp. 457-458, 27th International Symposium on Antennas and Propagation, ISAP 2022, 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 2022. Institute of Electrical and Electronics Engineers Inc., 2022. p. 457-458 (2022 International Symposium on Antennas and Propagation, ISAP 2022).

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

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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°/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.

KW - 79 GHz

KW - delay line

KW - insertion loss

KW - liquid crystal

KW - mm-Wave

KW - passive RF components

KW - phased array antenna

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Li J. 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 2022. Institute of Electrical and Electronics Engineers Inc. 2022. p. 457-458. (2022 International Symposium on Antennas and Propagation, ISAP 2022). doi: 10.1109/ISAP53582.2022.9998660

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

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