Dr Shaker Alkaraki's Outputs (8)

X-Band Reconfigurable Phase Shifters Based on SIW and Liquid Metal Technologies (2023)
Presentation / Conference Contribution
Alkaraki, S., Quan Wei Lin, Q., Jilani, S. F., Wong, H., Borja, A., Tang, S., Wang, Y., & Kelly, J. (2023, December). X-Band Reconfigurable Phase Shifters Based on SIW and Liquid Metal Technologies. Paper presented at 18th European Conference on Antennas and Propagation (EuCAP 2024), Glasgow, UK

This paper presents three reconfigurable phase shifters operate at X-band and designed utilizing liquid metal (LM). The phase shifters operate at 10 GHz and they have very low insertion loss performance and able to handle high levels of radio frequen... Read More about X-Band Reconfigurable Phase Shifters Based on SIW and Liquid Metal Technologies.

mm-Wave Low Insertion Loss SIW Phase Shifter Based on Liquid Metal Technology (2023)
Journal Article
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

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... Read More about mm-Wave Low Insertion Loss SIW Phase Shifter Based on Liquid Metal Technology.

10 GHz Low Loss Liquid Metal SIW Phase Shifter for Phased Array Antennas (2023)
Journal Article
Alkaraki, S., Lin, Q. W., Borja, A. L., Wang, Z., Wong, H., Tang, S., Wang, Y., & Kelly, J. R. (2023). 10 GHz Low Loss Liquid Metal SIW Phase Shifter for Phased Array Antennas. IEEE Transactions on Microwave Theory and Techniques, 71(11), 5045 -5059. https://doi.org/10.1109/TMTT.2023.3308160

This article presents a proof of concept demonstrator for a pair of novel phase shifters based on substrate integrated waveguide (SIW) technology. Gallium-based liquid metal (LM) is used to reconfigure each phase shifter. This article presents LM pha... Read More about 10 GHz Low Loss Liquid Metal SIW Phase Shifter for Phased Array Antennas.

Phased Array Antenna System Enabled by Liquid Metal Phase Shifters (2023)
Journal Article
Alkaraki, S., Lin, Q.-W., Kelly, J. R., Wang, Z., & Wong, H. (2023). Phased Array Antenna System Enabled by Liquid Metal Phase Shifters. IEEE Access, 11, 96987-97000. https://doi.org/10.1109/ACCESS.2023.3308068

This paper introduces a proof of concept design for the first phased array antenna design enabled by liquid metal (LM) technology. The proposed LM phased array antenna system is based on substrate integrated waveguides (SIW) to excite an 1×4 printed... Read More about Phased Array Antenna System Enabled by Liquid Metal Phase Shifters.

Circuits and Antennas Incorporating Gallium-Based Liquid Metal (2023)
Journal Article
Wu, Y.-W., Alkaraki, S., Tang, S.-Y., Wang, Y., & Kelly, J. R. (2023). Circuits and Antennas Incorporating Gallium-Based Liquid Metal. Proceedings of the IEEE, 111(8), 955-977. https://doi.org/10.1109/JPROC.2023.3285400

This article reviews the application and technology advancement of gallium (Ga)-based liquid metal (LM) in high-frequency circuits and antennas. It discusses the material properties of common LMs, the fluidic channels used to contain LM and their man... Read More about Circuits and Antennas Incorporating Gallium-Based Liquid Metal.

Millimetre-wave Multiple-Input-Multiple-Output Antenna Frontend for Beyond 5G Applications (2023)
Presentation / Conference Contribution
Fabianczyk, R. D., Alkaraki, S., Aslam, M., Abbasi, Q., Evans, A., & Jilani, S. F. (2023, March). Millimetre-wave Multiple-Input-Multiple-Output Antenna Frontend for Beyond 5G Applications. Presented at 17th European Conference on Antennas and Propagation, EuCAP 2023, Florence, Italy

This paper presents a millimeter-wave (mmwave) multiple-input multiple-output (MIMO) antenna for the fifth-generation (5G) networks and beyond. The proposed antenna frontend aims to deliver a high gain and bandwidth, planar configuration for a compac... Read More about Millimetre-wave Multiple-Input-Multiple-Output Antenna Frontend for Beyond 5G Applications.

Liquid Metal mm-Wave Phased Array Antenna for 5G Wireless Communication (2023)
Presentation / Conference Contribution
Alkaraki, S., Wang, C., Kelly, J., & Jilani, S. F. (2023, March). Liquid Metal mm-Wave Phased Array Antenna for 5G Wireless Communication. Presented at 17th European Conference on Antennas and Propagation, EuCAP 2023, Florence, Italy

This paper presents a mm-wave phased array antenna enabled by Liquid Metal technology. The proposed mm-wave phased array antenna operate on 26 GHz band and it is intended for 5G wireless applications. The proposed array consists of 1 × 4 array of pri... Read More about Liquid Metal mm-Wave Phased Array Antenna for 5G Wireless Communication.

Continuous Beam Steering Realized by Tunable Ground in a Patch Antenna (2023)
Journal Article
Qu, Z., Zhou, Y., Alkaraki, S., Kelly, J. R., & Gao, Y. (2023). Continuous Beam Steering Realized by Tunable Ground in a Patch Antenna. IEEE Access, 11, 4095-4104. https://doi.org/10.1109/ACCESS.2023.3235597

A continuously steerable patch antenna employing liquid metal is presented. The proposed antenna employs a novel tunable ground plane together with parasitic steering to steer the direction of the main beam. The tunable ground plane consists of a per... Read More about Continuous Beam Steering Realized by Tunable Ground in a Patch Antenna.