Shaker Alkaraki
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View article: Low–Cost 3D–Printed Standard Gain Horn Antennas for Millimetre–Wave Applications
Low–Cost 3D–Printed Standard Gain Horn Antennas for Millimetre–Wave Applications Open
This paper presents additively manufactured (3D printed) several standard gain horn antennas which have been designed to ensure simple and low–cost fabrication. In order to validate the proposed manufacturing approach, we have designed a n…
View article: A Liquid Metal‐Based Frequency Reconfigurable Patch Antenna With Cross Placed Fluidic Channel
A Liquid Metal‐Based Frequency Reconfigurable Patch Antenna With Cross Placed Fluidic Channel Open
In this letter, a novel frequency reconfigurable antenna with the aid of liquid metal is presented. The proposed antenna incorporates a 3D‐printed fluidic channel, which is placed cross to the metallized part of radiator. Compared to gener…
View article: Power Transmission for Millimeter-Wave Indoor/Outdoor Wearable IoT Devices Using Grounded Coplanar Waveguide-Fed On-Body Antenna
Power Transmission for Millimeter-Wave Indoor/Outdoor Wearable IoT Devices Using Grounded Coplanar Waveguide-Fed On-Body Antenna Open
This paper presents for the first-time evaluation of wireless power transmission (WPT) for sustainable low-powered Internet of Things (IoT) devices in realistic indoor/outdoor scenarios using empirical propagation models at 28 GHz. The use…
View article: Low-Side Lobes 3D Printed Slotted Waveguide Antenna Array for Millimeter-Wave Communication Systems
Low-Side Lobes 3D Printed Slotted Waveguide Antenna Array for Millimeter-Wave Communication Systems Open
In this paper, a 3D printed slotted waveguide antenna array is proposed for millimeter-wave communication systems at 28 GHz. The design method consists of the characterization of an isolated slot and then development of the linear and plan…
View article: A simply accessed approach of 2D‐shaping liquid metal in microwave device applications
A simply accessed approach of 2D‐shaping liquid metal in microwave device applications Open
In this letter, a simply accessed approach of 2D‐shaping liquid metal (LM) is presented. This approach allows a microwave device to take advantage of LM in both stretchability and removability. This approach is achieved based on the Young–…
View article: Liquid Metal Reconfigurable Phased Array Antenna
Liquid Metal Reconfigurable Phased Array Antenna Open
A design for a phased array antenna using liquid metal (LM) technology is presented. The phased array antenna uses substrate integrated waveguides (SIW) feeding structure to excite a 1×4 printed dipole antenna array. The phase distribution…
View article: A Compact High-Gain 28 GHz Antenna Array for Beyond 5G Wireless Networks
A Compact High-Gain 28 GHz Antenna Array for Beyond 5G Wireless Networks Open
In this paper a novel, high-gain corporate-fed 16-element circular patch array featuring a coplanar waveguide (CPW) feed and parasitic loop is proposed for beyond 5G and future 6G applications. An ultra-thin Rogers RO4003C substrate of 0.0…
View article: Circuits and Antennas Reconfigured using Gallium-based Liquid Metal
Circuits and Antennas Reconfigured using Gallium-based Liquid Metal Open
Wireless telecommunication systems incorporate a range of components (or circuits), including: filters, power splitters, couplers, etc.. They also require antennas to launch electromagnetic energy into the air. Typically, the performance p…
View article: A Microwave Subsystem (MS) Capable of Realizing Functional Change with the Aid of 2D-shaped Liquid Metal (LM)
A Microwave Subsystem (MS) Capable of Realizing Functional Change with the Aid of 2D-shaped Liquid Metal (LM) Open
This paper presents the first microwave subsystem (MS) capable of changing its function, in this case between resonator and antenna, using liquid metal (LM). This is achieved by filling/emptying fluidic channels with Gallium-based LM and f…
View article: mm-Wave Low Insertion Loss SIW Phase Shifter Based on Liquid Metal Technology
mm-Wave Low Insertion Loss SIW Phase Shifter Based on Liquid Metal Technology Open
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 res…
View article: 10-GHz Low-Loss Liquid Metal SIW Phase Shifter for Phased Array Antennas
10-GHz Low-Loss Liquid Metal SIW Phase Shifter for Phased Array Antennas Open
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 pres…
View article: Millimeter-wave Defected Ground Structure-based MIMO Antenna for 6G Wireless Applications
Millimeter-wave Defected Ground Structure-based MIMO Antenna for 6G Wireless Applications Open
In this paper, a 2×2 multiple-input-multiple-output (MIMO) assembly of an elliptical-shaped millimeter-wave (mm-wave) antenna with defected-ground structures (DGS) is presented. The antenna is integrated with ring slot-shaped cut-outs as D…
View article: Circuits and Antennas Incorporating Gallium-Based Liquid Metal
Circuits and Antennas Incorporating Gallium-Based Liquid Metal Open
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 an…
View article: Millimetre-wave Multiple-Input-Multiple-Output Antenna Frontend for Beyond 5G Applications
Millimetre-wave Multiple-Input-Multiple-Output Antenna Frontend for Beyond 5G Applications Open
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 f…
View article: Liquid Metal mm-Wave Phased Array Antenna for 5G Wireless Communication
Liquid Metal mm-Wave Phased Array Antenna for 5G Wireless Communication Open
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 a…
View article: Continuous Beam Steering Realized by Tunable Ground in a Patch Antenna
Continuous Beam Steering Realized by Tunable Ground in a Patch Antenna Open
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 consis…
View article: Phased Array Antenna System Enabled by Liquid Metal Phase Shifters
Phased Array Antenna System Enabled by Liquid Metal Phase Shifters Open
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…
View article: A Reconfigurable Microstrip Patch Antenna With Switchable Liquid-Metal Ground Plane
A Reconfigurable Microstrip Patch Antenna With Switchable Liquid-Metal Ground Plane Open
This letter presents a novel reconfigurable microstrip patch antenna that is reconfigured using liquid metal. The proposed antenna employs two approaches in unison to switch the direction of the main beam. Specifically, the antenna uses th…
View article: A Wideband Circularly Polarized Antenna Based on Anisotropic Metamaterial
A Wideband Circularly Polarized Antenna Based on Anisotropic Metamaterial Open
This article presents a novel circularly polarized (CP) antenna based on an anisotropic metamaterial. The antenna is capable of performing linear-to-circular polarization conversion over a wideband of frequencies in the X-band (8-12 GHz). …
View article: Techniques for Designing High Gain and Two‐Dimensional Beam Scanning Antennas for 5<scp>G</scp>
Techniques for Designing High Gain and Two‐Dimensional Beam Scanning Antennas for 5<span>G</span> Open
This chapter presents a number of novel concepts for designing antenna arrays, which achieve high gain levels together with wide-angle scan capability. It begins with the Luneburg lens antenna, which supports beam scanning over a very wide…
View article: 3D Printed Slotted Waveguide Antenna Array for Millimeter-wave Communication Systems
3D Printed Slotted Waveguide Antenna Array for Millimeter-wave Communication Systems Open
This paper introduces a 3D printed slotted waveguide linear antenna array at 28 GHz. The proposed antenna offers the advantages of low fabrication cost and reduced weight compared to the metallic slotted waveguide antenna array. The propos…
View article: Phase Reconfiguration via SIW Structures Filled with Liquid Metal
Phase Reconfiguration via SIW Structures Filled with Liquid Metal Open
This paper presents substrate integrated waveguide (SIW) phase shifter that can be reconfigured using liquid metal. The phase shifter is developed to be used for antenna applications. This digital phase shifter incorporates a series of hol…
View article: A Bio-degradable Textile-Based Graphene Antenna for the 5G Smart Wearables
A Bio-degradable Textile-Based Graphene Antenna for the 5G Smart Wearables Open
This paper proposes a bio-degradable antenna design well-suited for the 5th generation (5G) wearables. This antenna has a graphene patterning instead of conventional metallization on a textile substrate to make it eco-friendly as it avoids…
View article: Liquid Metal Enabled SIW Vias and RF Blocking Walls for Reconfigurable Antennas
Liquid Metal Enabled SIW Vias and RF Blocking Walls for Reconfigurable Antennas Open
This paper presents a method for designing reconfigurable microwave devices based on substrate integrated waveguides (SIW) technology. The method involves forming walls from drill holes that can be filled with liquid metal to form vias. Fu…
View article: A Biodegradable Textile-based Graphene Antenna for 5G Wearable Applications
A Biodegradable Textile-based Graphene Antenna for 5G Wearable Applications Open
This paper presents a textile-based antenna for the currently deployed fifth-generation (5G) wireless bands. The proposed antenna consists of a coplanar-waveguide (CPW)-fed patch with truncated sides and a pair of L-shaped stubs as a part …
View article: Reconfigurable Antenna Using Liquid Metal Vias
Reconfigurable Antenna Using Liquid Metal Vias Open
This paper presents a moderately high directivity (10 dBi) antenna having a reconfigurable radiation pattern. Specifically, the direction of the main beam can be altered. The radiation pattern control is achieved with the aid of a single-p…
View article: Reconfigurable Liquid Metal-Based SIW Phase Shifter
Reconfigurable Liquid Metal-Based SIW Phase Shifter Open
This article presents the first substrate integrated waveguide (SIW) phase shifter that can be reconfigured using liquid metal (LM). This digital phase shifter exhibits low insertion loss and is reciprocal and bidirectional. It incorporate…
View article: Radiation Pattern Reconfigurable Antenna Using Liquid Metal Vias
Radiation Pattern Reconfigurable Antenna Using Liquid Metal Vias Open
This paper presents a moderately high directivity (∼12 dBi) antenna having a reconfigurable radiation pattern. The proposed antenna, illustrated in Fig. 1 , is closely based on existing designs [1]-[2]. The proposed antenna consists of a d…
View article: 8 X 4 mm-Wave 3D Printed MIMO Antenna for 5G Wireless Communication
8 X 4 mm-Wave 3D Printed MIMO Antenna for 5G Wireless Communication Open
A 3D printed 8 X 4 mm-wave multiple input multiple output (MIMO) antenna is presented in this paper. The proposed MIMO has an overall dimensions of 106.3 mm X 75.7 mm and it operates at 28 GHz mm-wave band. The proposed MIMO consists of 32…
View article: Miniaturized Meander-Line Dipole Antenna For Short-Range Wireless Communication Networks
Miniaturized Meander-Line Dipole Antenna For Short-Range Wireless Communication Networks Open
This paper presents the design and performance analysis of a planar, miniaturized meander-line dipole antenna designed for short-range wireless communication links. The proposed compact antenna has a size of 0.08λ o × 0.03λ o (at f o = 288…