mm-Wave Low Insertion Loss SIW Phase Shifter Based on Liquid Metal Technology

Alkaraki, Shaker; Qu, Zhishu; Kelly, James R.

Abstract

This letter presents the proof of concept of first liquid metal (LM)-based millimeter-wave (mm-wave) phase shifter that have very low insertion loss (IL) performance. The proposed phase shifter has a phase shift up to 360° with a phase resolution of 45°. The phase shifter operates on 26-GHz 5G band and have IL performance of lower than 2.1 dB. This enables the proposed phase shifters to have an excellent figure of merit (FoM) of 174.7°/dB at 26 GHz. The proposed phase shifter has several advantages including the capability to be integrated with SIW-based feeding network for mm-wave phased array antennas. The phase of the phase shifters is controlled by introducing vias formed of LM. When the via is required, the via hole is filled with LM, and when the via is no longer required, the holes are emptied of LM. The proposed reconfiguration approach will also be applicable within a wide range of different reconfigurable mm-wave devices.

Citation

Alkaraki, S., Qu, Z., & Kelly, J. R. (2024). mm-Wave Low Insertion Loss SIW Phase Shifter Based on Liquid Metal Technology. IEEE Microwave and Wireless Technology Letters, 34(2), 155-158. https://doi.org/10.1109/LMWT.2023.3339200

• Journal Article Type: Article
• Acceptance Date: Oct 18, 2023
• Online Publication Date: Dec 12, 2023
• Publication Date: 2024-02
• Deposit Date: Oct 22, 2023
• Publicly Available Date: Dec 12, 2023
• Journal: IEEE Microwave and Wireless Technology Letters
• Print ISSN: 2771-957X
• Electronic ISSN: 2771-9588
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 34
• Issue: 2
• Pages: 155-158
• DOI: https://doi.org/10.1109/LMWT.2023.3339200
• Keywords: Phase shifters , Radio frequency , Copper , Resonator filters , Liquids , 5G mobile communication , Transmission line measurements , Phase Shift , Liquid Metal , Low Insertion Loss , Figure Of Merit , Phased Array Antenna , High-pass Filter , Operation State , Radio Frequency Power , PIN Diodes , High Insertion Loss , Power Handling Capability , 5G , EGaIN , liquid metal , millimeter-wave (mm-wave) phase shifter , reconfigurable devices , substrate integrated waveguide
• Public URL: https://nottingham-repository.worktribe.com/output/26521508
• Publisher URL: https://ieeexplore.ieee.org/document/10354030