Raed Abd-Alhameed

• BSc, MSc, HmathDip, PhD, Ceng, FIET, FHEA
• Radio Frequency, Antenna design and DSP for Locations Based Services at University of Bradford

Reconfigurable Intelligent Surface (RIS) technology is a promising technique for enhancing the performance of reconfigurable next-generation wireless networks. In this paper, we investigate the physical layer security of the downlink in RIS-aided non-orthogonal multiple access (NOMA) networks in the presence of an eaves-dropper. To characterize the...

In this paper, we proposed an advanced multimodal fusion technique for fingerprint and finger vein recognition algorithms, incorporating novel improvements to established methods. Leveraging Scale-Invariant Feature Transform (SIFT) and Fast Library for Approximate Nearest Neighbors (FLANN), our approach integrates preprocessing enhancements such as...

This article introduces a high-sensitive microstrip-patch sensor-based meander-line slot structure for water measurement applications. The HFSS software tool is employed to design and simulate the proposed system. The inset-fed sensor size is 60×50×1 mm3 and is printed on a low-cost FR-4 dielectric substrate. The meander-line slots resonator is use...

Modern communication systems enable the rapid development of microstrip patch antennas. Their lightweight and compact profile makes patch antennas increasingly popular today. They are easy to manufacture and seamlessly integrate into feeding networks, making them highly versatile for modern applications. This paper presents a single-feed, dual-band...

Beam squint phenomenon is considered one of the most drawbacks that limit the use of (mm-waves) array antennas; which causes significant degradation in the BER of the system. In this paper, a uniform linear array (ULA) system is exemplified at millimeter (mm-waves) frequency bands to realize the effects of beam squint phenomena from different direc...

As 5G continues to gain more momentum around the world, there are still challenges that need to be addressed in order to capitalize fully on the benefits of the proposed architectures and technologies, that include small cells, advanced OFDM, beamforming, massive MIMO, and millimeter wave. A particular, challenge is 5G channel estimation due to the...

This article explores the influence of lunar regolith and rover structure, such as mast design and material composition, on antenna parameters. It focuses on the distinctive difficulties of communication in the lunar environment, which need specialized antenna solutions. This study specifically examines the performance of antennas on the lunar Rash...

In this paper, we presented RFID multi-band reader antenna design that is worked in four UHF standard bands to cover all around the world RFID classification frequencies. This design works practically as a circular polarization so it will decrease the tag polarization disadvantage to the minimum effect. In this design, we found that this antenna de...

Considering the ever-increasing and high demands in wireless communication applications for 4G, LTE, and 5G, a proposed antenna design has been put forth that incorporates dual-band millimeter wave technology with the sub-6 GHz band. This design has been expertly created to cater to the growing needs of the telecommunications industry and aims to e...

Cancer is still a major worldwide health concern, thus developing new, efficient, low-power, and highly accurate early detection methods is imperative. Ultra-wideband (UWB) technology offers a viable way to improve the efficiency and accuracy of cancer diagnosis. This study offers a thorough analysis of the creation and design of sensors for early...

Phased array antennas with broadband and super-wideband (SWB) capabilities, featuring extensive scanning and end-fire radiations, are imperative to meet the evolving demands of future cellular systems. This paper explores the properties of a new design, incorporating low-profile and SWB resonators tailored for advanced fifth-generation (5G) communi...

As a simple and inexpensive channel characteristic, received signal strength (RSS) finds extensive usage in localization applications. However, the quick changes in signal strength impact the localization precision. By averaging over access points (APs) with multiple frequencies and/or heights, this article suggests a novel approach to lowering RSS...

This paper presents a stochastic expansion planning model for coordinated natural gas and electricity networks, incorporating gas-fired generators, Power-to-Gas facilities, and renewable power sources. The primary objective is to minimize the total cost over the planning horizon, addressing the significant interdependencies between these networks w...

Four miniaturized four-element multiple-input multiple-output (MIMO) antenna designs are proposed, designed, and fabricated with dimensions of 26 mm x 26 mm x 0.8 mm each. The first MIMO design operates at 3.5 GHz, while the second operates at 5.2 GHz. The first and second designs are combined into a third design that can be reconfigured to operate...

Facial recognition technology is crucial for precise and rapid identity verification and security. This research delves into advancements in facial recognition technology for verification purposes, employing a combination of convolutional neural networks (CNNs), principal component analysis (PCA), and sequential neural networks. Unlike identificati...

This survey provides an insightful overview of recent advancements in facial recognition technology, mainly focusing on multi-modal face recognition and its applications in security biometrics and identity verification. Central to this study is the Sejong Face Database, among other prominent datasets, which facilitates the exploration of intricate...

Accurate link budget calculations and efficient 5G wireless application system design depend on the path loss modelling. Research on 5G mm-wave propagation in indoor environments shows capacity variations due to different models. Future models need validation, simulation, and improvement for better network quality. This paper introduces a novel met...

This study presents the development of an advanced machine learning model based on a two-dimensional (2D) Radio Frequency (RF) sensing framework for refined monitoring of femoral bone fractures. Utilising MATLAB simulations, we created a comprehensive dataset enhanced with variations in bone diameter, muscle thickness, fat thickness, and hematoma s...

Over the previous two decades, a notable array of space exploration missions have been initiated with the primary aim of facilitating the return of both humans and robots from Earth to the moon. The significance of these endeavors cannot be emphasized enough as numerous entities, both public and private, from across the globe have invested substant...

In the ever-evolving landscape of modern wireless communication systems, the escalating demand for seamless connectivity has propelled the imperative for avant garde, versatile, and high-performance antennas to unprecedented heights [...]

This paper proposes a new technique for wideband transmission and direction-finding using orthogonal frequency division multiplexing (OFDM) for wearable devices in noisy Rician channels. The technique uses a coded OFDM signal combined with a pseudo-random permutation and a Walsh sequence to mitigate inter-carrier interference, peak-to-average power...

This paper proposes a new technique for wideband transmission and direction-finding using orthogonal frequency division multiplexing (OFDM) for wearable devices in noisy Rician channels. The technique uses a coded OFDM signal combined with a pseudo-random permutation and a Walsh sequence to mitigate inter-carrier interference, peak-to-average power...

This paper proposes a new technique for wideband transmission and direction-finding using orthogonal frequency division multiplexing (OFDM) for wearable devices in noisy Rician channels. The technique uses a coded OFDM signal combined with a pseudo-random permutation and a Walsh sequence to mitigate inter-carrier interference, peak-to-average power...

A Novel design of a curved single‐layered frequency selective surface with an 11 × 11 array of a 13 × 13 mm‐sized unit cell has been merged with a miniaturized, CPW‐fed ultra‐wideband monopole of dimensions (20 × 25 mm²) for gain enhancement. The suggested prototype, crafted on an FR‐4 dielectric substrate and demonstrates a very broad bandwidth st...

This paper demonstrates structural changes in variable structure control. A second order open loop unstable system was used as an illustrative example to demonstrate the structural changes; the system has real, positive open loop eigenvalues. A change of system eigenvalues implies a change of system structure. A structure may have properties such a...

Multiple-input multiple-output (MIMO) antenna is a technology that uses multiple antennas at both the transmitter and receiver to improve the performance of wireless communication systems. One of the challenges in designing MIMO antennas is to reduce the complexity of the antenna array, while still maintaining good performance. One way to reduce co...

Abstract— this article presents a miniaturized size Microstrip-patch sensor structure based on meander-line slot for water-quality and salinity measurement applications. The HFSS-software tool is employed to design and simulate the proposed sensor. The proposed sensor is printed on 60×50×1 mm3 a dielectric material of FR-4 type. The meander-line sl...

In the design of phase shifters, the modeling equations are too complicated and require some approximations to be derived correctly by hand. In response to this problem, this paper presents a generalized concept, algorithm, and MATLAB code that provide the exact modeling equations of the transmission parameters and the scattering parameters of any...

The Internet of Things (IoT) also has a huge impact on dramatically lowering healthcare expenses and increasing treatment outcomes. The only ways that patients could communicate with doctors before the Internet of Things were in person, over the phone, or via text. There was no feasible way for healthcare providers to assess patients’ health and of...

In this work, an overview of implementing machine learning (ML) models in antenna design and optimisation has been proposed. This includes deep learning on ML structure, categories, and frameworks to obtain useful and general insights about methods of predicting, collecting, and analysing high throughput fast data using ML techniques. An in-depth o...

Underwater communication applications extensively use localization services for object identification. Because of their significant impact on ocean exploration and monitoring, underwater wireless sensor networks (UWSN) are becoming increasingly popular, and acoustic communications have largely overtaken radio frequency broadcasts as the dominant me...

A four-element compact dual-band patch antenna having a common ground plane operating at 28/38 GHz is proposed for millimeter-wave communication systems in this paper. The multiple-input-multiple-output (MIMO) antenna geometry consists of a slotted ellipse enclosed within a hollow circle which is orthogonally rotated with a connected partial ground...

In this paper, a 2.45 GHz band microwave sensor design is introduced to be utilized for the dielectric constant determination of ethanol-water solutions. The introduced microwave sensor is composed of two symmetrically positioned, directly coupled inter-connected split-ring resonators with a circular ring-shaped detection area in the middle region,...

Enabling multiband systems with per-band in-band full duplexing (IBFD) opens avenues for multiband instantaneous feedback sensing and streaming. This letter adopts fractal antenna arrays to achieve multiband-IBFD (MIBFD) antenna subsystems using hexagonal star array (HSA) geometry as a generating subarray. Characterised by concentric recurring freq...

The UK financial sector increasingly employs machine learning techniques to enhance revenue and understand customer behaviour. In this study, we develop a machine learning workflow for high classification accuracy and improved prediction confidence using a binary classification approach on a publicly available dataset from a Portuguese financial in...

In this research, aninnovative L-shape slot that is fed by F-shape dual-band six-Elements multiple-input multiple-output (MIMO) antenna for mobile phones that operate in a 5G spectrum is demonstrated. This proposed antenna has six antenna elements that can operate in dual band sub-6 GHz for 5G band spectrums at 3.42–3.77 GHz and at 5.30–5.63 GHz. E...

The desalination of saltwater is a viable option to produce freshwater. All the desalination processes are energy-intensive and can be carried out on a large scale. Therefore, producing freshwater using renewable energy sources is the most desirable option considering the current energy crisis and the effect that fossil-fuel-based energy has on our...

A fuzzy neural Petri nets (FNPNs) controller is utilised for controlling a three-links robot arm which considers a nonlinear dynamic system. The incorporation of the classical FNN with a Petri net (PN) has been suggested to produce a new representing system called FNPN structure to alleviate the computation burden. The motion equation of three link...

This study presents a compact broadband wide-slot antenna with broadband left-hand circular polarization compatible with both LTE 42 and LTE 43 standards of 5G mid-band applications. The proposed antenna is fabricated on an FR4 dielectric substrate with overall dimensions of 0.41λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="htt...

In the equivalent frequency-based model, the antenna array gain is utilised to characterise the frequency response of the beam squint effect generated by the antenna array. This impact is considered for a wide range of uniform linear array (ULA) and uniform planar array (UPA) designs, including those with and without tapering configurations. For a...

This work presents a combination of a cup-shaped monopole antenna and an E-shaped Multi-Mode Resonator (MMR) with the presence of a pair of PIN diodes and a varactor diode to form a compact reconfigurable communication filtering antenna for interweave Cognitive Radio (CR) systems. The proposed filtering antenna operates in the WiMAX band, and it is...

As the technical specifications of the 5th Generation (5G) wireless communication standard are being wrapped up, there are growing efforts amongst researchers, industrialists, and standardisation bodies on the enabling technologies of a 6G standard or the so-called Beyond 5G (B5G) one. Although the 5G standard has presented several benefits, there...

The work presents a low-cost compact microstrip line (MSL)-to-rectangular waveguide (RWG) transition for space communication, satellite communication, RADAR, amateur radio; microwave laboratory X-band applications. A 90˚ MSL-to-RWG transition comprises a MSL and a RWG (WR-90). An elliptical microstrip antenna is used as an RF energy launcher in RWG...

Combining a microwave filter with an antenna results in a low-cost, efficient, and small-size selective radiator called a filtering antenna or filtenna. In this work, a compact filtering antenna is presented to radiate within the 5G mid-band frequencies along (3.6–3.8 GHz) with strong rejection for the frequencies outside this range. The proposed f...

This study aims to introduce a new phased array design with improved radiation properties for future cellular networks. The procedure of the array design is simple and has been accomplished on a low-cost substrate material while offering several interesting features with high performance. Its schematic involves eight air-filled slot-loop metal-ring...

Solar energy, amongst all renewable energies, has attracted inexhaustible attention all over the world as a supplier of sustainable energy. The energy requirement of major seawater desalination processes such as multistage flash (MSF), multi-effect distillation (MED) and reverse osmosis (RO) are fulfilled by burning fossil fuels, which impact the e...

This article presents a miniaturized triple-band antenna for Internet of Things (IoT) applications. The miniaturization is achieved by using a split square ring resonator and half ring resonator. The antenna is fabricated on an FR4 substrate with dimensions of (33 × 22 × 1.6) mm³. The proposed antenna resonates at the frequencies 2.4 GHz, 3.7 GHz,...

In this paper, a planar multiple input, multiple output (MIMO) dipole antenna for a future sub-6 GHz 5G application is proposed. The planar MIMO structure consists of 4 antenna elements with an overall size of 150×82×1 mm³. The single antenna element is characterized by a size of 32.5×33.7×1 mm³ printed on an FR-4 dielectric s...

This work aims to present an improved version of the liquid mixture identification sensor, the proposed sensor is tested experimentally on mixture of water ethanol, the identification of liquid is based on the measurement of frequency displacement, and comparison with reference values of water ethanol. This device is based on metamaterial structure...

This review paper is considered most of the previous research regarding Thermal IR (Infrared) cameras. Showing all types of IR with brief information for each one. Then introducing the historical background of thermal technology and state of art for various thermal face analyses. This study aims to highlight the spot on all types of IR imaging on f...

In this paper, a new design of dual-polarized horn antenna with high performance for sub 6 GHz applications. The structure of the antenna is composed of a quadruple-ridged waveguide, a shorting plate as a cavity back, and flare sections with tapered quadruple ridges. The proposed dual-polarized horn antenna is designed to support the sub-6 spectrum...