W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response

Yi-Wen Wu; Lu Qian; Yi Wang

doi:10.1109/UCMMT62975.2024.10737784

W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response

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

Abstract

This paper proposes a W-band liquid metal (LM)-enabled linearly tunable substrate-integrated-waveguide (SIW) phase shifter with phase self-compensation. The switchable element is composed of a Via-Pad-Slot (VPS) structure. The via and pad are separated from the top-layer ground by an annular slot. The equivalent circuit of the VPS structure comprises a shunt capacitance and inductance. When it is covered by gallium (Ga)-based LM, the slot and equivalent capacitance disappear. When the VPS structures are covered by LM one by one, the phase linearly increases from 0° to the maximum of 360°. Since the shunt capacitance and inductance have phase compensation properties, the proposed phase shifter has a low phase deviation with frequency. The measured insertion loss (IL) is 2.6 dB at 80 GHz, and the phase shift ranges from 0° to 335° over 75 - 85 GHz. The phase shift step is 10.5°/via, and the phase deviation is approximately ±20°. This linear tunable phase shifter with low IL and phase deviation may find applications in millimetre-wave phased arrays.

Original language	English
Title of host publication	2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT)
Publisher	IEEE
Pages	22-25
Number of pages	4
ISBN (Electronic)	9798331530228, 9798331530211 (USB)
ISBN (Print)	9798331530235 (PoD)
DOIs	https://doi.org/10.1109/UCMMT62975.2024.10737784
Publication status	Published - 4 Nov 2024
Event	2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT) - Palermo, Palermo, Italy Duration: 21 Aug 2024 → 23 Aug 2024

Publication series

Name	UK, Europe, China Millimetre Waves and THZ Technology Workshop
Publisher	IEEE
ISSN (Print)	2639-4545
ISSN (Electronic)	2639-4537

Conference

Conference	2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT)
Country/Territory	Italy
City	Palermo
Period	21/08/24 → 23/08/24

Bibliographical note

Publisher copyright:
2024 IEEE

Keywords

Liquid metal
phase shifter
millimetre-wave devices

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials
Instrumentation

Access to Document

10.1109/UCMMT62975.2024.10737784

Programmable Microwave Hardware Based on Liquid Wire (PROGRAMMABLE)
Wang, Y. (Principal Investigator), Tang, S. (Co-Investigator) & Constantinou, C. (Co-Investigator)
Engineering & Physical Science Research Council
1/10/21 → 31/01/25
Project: Research Councils

Cite this

Wu, Y.-W., Qian, L., & Wang, Y. (2024). W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response. In 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT) (pp. 22-25). Article 10737784 (UK, Europe, China Millimetre Waves and THZ Technology Workshop). IEEE. https://doi.org/10.1109/UCMMT62975.2024.10737784

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title = "W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response",

abstract = "This paper proposes a W-band liquid metal (LM)-enabled linearly tunable substrate-integrated-waveguide (SIW) phase shifter with phase self-compensation. The switchable element is composed of a Via-Pad-Slot (VPS) structure. The via and pad are separated from the top-layer ground by an annular slot. The equivalent circuit of the VPS structure comprises a shunt capacitance and inductance. When it is covered by gallium (Ga)-based LM, the slot and equivalent capacitance disappear. When the VPS structures are covered by LM one by one, the phase linearly increases from 0° to the maximum of 360°. Since the shunt capacitance and inductance have phase compensation properties, the proposed phase shifter has a low phase deviation with frequency. The measured insertion loss (IL) is 2.6 dB at 80 GHz, and the phase shift ranges from 0° to 335° over 75 - 85 GHz. The phase shift step is 10.5°/via, and the phase deviation is approximately ±20°. This linear tunable phase shifter with low IL and phase deviation may find applications in millimetre-wave phased arrays.",

keywords = "Liquid metal, phase shifter, millimetre-wave devices",

author = "Yi-Wen Wu and Lu Qian and Yi Wang",

note = "Publisher copyright: 2024 IEEE; 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT) ; Conference date: 21-08-2024 Through 23-08-2024",

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doi = "10.1109/UCMMT62975.2024.10737784",

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isbn = "9798331530235 (PoD)",

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Wu, Y-W , Qian, L & Wang, Y 2024, W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response. in 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT)., 10737784, UK, Europe, China Millimetre Waves and THZ Technology Workshop, IEEE, pp. 22-25, 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT), Palermo, Italy, 21/08/24. https://doi.org/10.1109/UCMMT62975.2024.10737784

W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response. / Wu, Yi-Wen ; Qian, Lu ; Wang, Yi.
2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT). IEEE, 2024. p. 22-25 10737784 (UK, Europe, China Millimetre Waves and THZ Technology Workshop).

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

TY - GEN

T1 - W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response

AU - Wu, Yi-Wen

AU - Qian, Lu

AU - Wang, Yi

PY - 2024/11/4

Y1 - 2024/11/4

N2 - This paper proposes a W-band liquid metal (LM)-enabled linearly tunable substrate-integrated-waveguide (SIW) phase shifter with phase self-compensation. The switchable element is composed of a Via-Pad-Slot (VPS) structure. The via and pad are separated from the top-layer ground by an annular slot. The equivalent circuit of the VPS structure comprises a shunt capacitance and inductance. When it is covered by gallium (Ga)-based LM, the slot and equivalent capacitance disappear. When the VPS structures are covered by LM one by one, the phase linearly increases from 0° to the maximum of 360°. Since the shunt capacitance and inductance have phase compensation properties, the proposed phase shifter has a low phase deviation with frequency. The measured insertion loss (IL) is 2.6 dB at 80 GHz, and the phase shift ranges from 0° to 335° over 75 - 85 GHz. The phase shift step is 10.5°/via, and the phase deviation is approximately ±20°. This linear tunable phase shifter with low IL and phase deviation may find applications in millimetre-wave phased arrays.

AB - This paper proposes a W-band liquid metal (LM)-enabled linearly tunable substrate-integrated-waveguide (SIW) phase shifter with phase self-compensation. The switchable element is composed of a Via-Pad-Slot (VPS) structure. The via and pad are separated from the top-layer ground by an annular slot. The equivalent circuit of the VPS structure comprises a shunt capacitance and inductance. When it is covered by gallium (Ga)-based LM, the slot and equivalent capacitance disappear. When the VPS structures are covered by LM one by one, the phase linearly increases from 0° to the maximum of 360°. Since the shunt capacitance and inductance have phase compensation properties, the proposed phase shifter has a low phase deviation with frequency. The measured insertion loss (IL) is 2.6 dB at 80 GHz, and the phase shift ranges from 0° to 335° over 75 - 85 GHz. The phase shift step is 10.5°/via, and the phase deviation is approximately ±20°. This linear tunable phase shifter with low IL and phase deviation may find applications in millimetre-wave phased arrays.

KW - Liquid metal

KW - phase shifter

KW - millimetre-wave devices

U2 - 10.1109/UCMMT62975.2024.10737784

DO - 10.1109/UCMMT62975.2024.10737784

M3 - Conference contribution

SN - 9798331530235 (PoD)

T3 - UK, Europe, China Millimetre Waves and THZ Technology Workshop

SP - 22

EP - 25

BT - 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT)

PB - IEEE

T2 - 2024 17th United Conference on Millemetre Waves and Terahertz Technologies (UCMMT)

Y2 - 21 August 2024 through 23 August 2024

ER -

W-Band Liquid-Metal-Enabled Phase Shifter: Linear Tunability and Self-Compensatory Phase Response

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Projects

Programmable Microwave Hardware Based on Liquid Wire (PROGRAMMABLE)

Cite this