Ahmed Jamal Abdullah Al-Gburi

ORCID: 0000-0002-5305-3937
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Research Areas
  • Antenna Design and Analysis
  • Microwave Engineering and Waveguides
  • Energy Harvesting in Wireless Networks
  • Advanced Antenna and Metasurface Technologies
  • Wireless Body Area Networks
  • Antenna Design and Optimization
  • Advanced MIMO Systems Optimization
  • Microwave and Dielectric Measurement Techniques
  • Acoustic Wave Resonator Technologies
  • Millimeter-Wave Propagation and Modeling
  • Microwave Imaging and Scattering Analysis
  • Metamaterials and Metasurfaces Applications
  • Advanced Sensor and Energy Harvesting Materials
  • Geophysical Methods and Applications
  • Wireless Power Transfer Systems
  • Graphene and Nanomaterials Applications
  • RFID technology advancements
  • Advanced Photonic Communication Systems
  • Ultra-Wideband Communications Technology
  • Ultrasonics and Acoustic Wave Propagation
  • Plasmonic and Surface Plasmon Research
  • Radio Frequency Integrated Circuit Design
  • Full-Duplex Wireless Communications
  • Photonic and Optical Devices
  • Advanced Wireless Communication Technologies

Technical University of Malaysia Malacca
2018-2025

Al-Farahidi University
2025

Mustansiriyah University
2022

ORCID
2020

Western Michigan University
2017-2018

A quad-port Multiple Input Output Antenna with high isolation is presented in this paper. The MIMO design intended to receive Ultra-Wide Band response target various wireless applications. engineered model has 40 x 1.6 mm3 electrical dimensions. single antenna achieves size compactness due an appropriate inclusion of vertical and horizontal conductive strips. Additionally, a diagonal radiating strip shaped pooled the patch geometry. similar positioned orthogonally each other diversified...

10.1016/j.rineng.2024.102318 article EN cc-by Results in Engineering 2024-05-24

This paper introduces a new compact Chair-shaped MIMO antenna with two radiating elements and single layer of frequency-selective surface (FSS) for 5G Sub-6GHz communication systems. They use techniques, Parasitic element, (FSS), isolation gain enhancement, respectively. The 1 × 2 using coplanar waveguide (CPW) fed. Moreover, an FSS array structure consisting (a 68-unit) Square-shaped Circular Slot (SCS) shaped cells is employed technique (Surround Technique) to enhance the between antenna....

10.1109/access.2024.3380013 article EN cc-by-nc-nd IEEE Access 2024-01-01

This study proposed the use of coplanar waveguide Ultrawide-band strawberry artistic shaped printed monopole (SAPM) antenna with a single-layer frequency selective surface (FSS) as metallic plate to improve gain application. The intersection six cylinders is used structure radiating element, which leads enhancing bandwidth. FSS reflectors 10 × array unit cell 6mm 6 mm in introducing center-operating frequency. FR4 substrate (CPW) fed print antenna, provided wide impedance bandwidth 8.85 GHz...

10.1109/access.2020.2995069 article EN cc-by IEEE Access 2020-01-01

This paper presents a wideband and high-gain rectangular microstrip array antenna with new frequency-selective surface (FSS) designed as reflector for the sub-6 5G applications. The proposed is to meet US Federal Communications Commission (FCC) standard in mid-band (3.5-5 GHz) configuration consists of 1 × 4 an FSS produce semi-stable high radiation gain. modeled delivered wide stopband transmission coefficient from 3.3 5.6 GHz promised linearly declining phase over frequencies. An...

10.3390/mi13081215 article EN cc-by Micromachines 2022-07-29

In this paper, a wideband antenna is proposed for ultra-wideband microwave imaging applications. The comprised of tapered slot ground, rectangular slotted patch and four star-shaped parasitic components. added shown to be effective in improving the bandwidth gain. system provides realized gain 6 dBi, an efficiency around 80% on radiation bandwidth, wide impedance (S11 < -10 dB) 6.3 GHz (from 3.8 10.1 GHz). This supports true operation. Furthermore, fidelity factor face-to-face (FtF)...

10.3390/ma16041496 article EN Materials 2023-02-10

This article proposes a tri–band Multiple Input Output (MIMO) antenna operating at 5.2 – 5.7 GHz (5G Wi–Fi), 11.8 17.3 (Ku–band), and 23.4 37.3 millimeter–Wave) frequency bands. The proposed MIMO consists of 2 × configuration with defective ground structure on Rogers–5880 substrate. An innovative passive decoupling structure, featuring thin microstrip lines positioned between the radiating elements, has been meticulously engineered to ensure high level isolation, achieving values less than...

10.1016/j.asej.2023.102579 article EN cc-by-nc-nd Ain Shams Engineering Journal 2023-11-23

A detachable miniaturized three-element spirals radiator button antenna integrated with a compact leaky-wave wearable forming dual-band three-port is proposed. The fabricated on denim (εr = 1.6, tan δ 0.006) textile substrate dimensions of 0.37 λ0 × 0.25 0.01 mm3 and rigid 20 mm diameter (on PTFE εr 2.01, 0.001). It augments users' comfort, making it one the smallest to date in literature. designed antenna, 3.25 3.65 GHz 5.4 5.85 operational bands, covers wireless local area network (WLAN)...

10.3390/s23041997 article EN cc-by Sensors 2023-02-10

This paper introduces a new tri-wideband fractal antenna for use in wireless communication applications. The manufactured developed has Sierpinski hexagonal-shaped radiating element and partial ground plane loaded with three rectangular stubs slits. investigated small footprint of 0.19λ0 × 0.24 λ0 0.0128 improved bandwidth gain. According to the measurements, designed resonates throughout frequency ranges 2.19–4.43 GHz, 4.8–7.76 8.04–11.32 GHz. These are compatible variety technologies,...

10.3390/fractalfract7020115 article EN cc-by Fractal and Fractional 2023-01-25

A wideband, dual-element MIMO antenna operating in 2.83-7.21GHz frequency bands is presented this study.The proposed design consists of a stub-loaded partial ground plane and stepped feedline with dual circle-shaped radiator on top.The designed operates from 2.83 to 7.21 GHz, covering the C band (4-8 GHz) 5G (sub-6 applications.The peak gain observed 4.8 dBi at 6.2 maximum efficiency 92% 3.2 GHz.The minimum port isolation ECC over 2.83-7.21are as 22 dB 0.003, respectively.To achieve best...

10.2528/pierc23121201 article EN Progress In Electromagnetics Research C 2024-01-01

Abstract Maintaining the compactness of 5G smartphones while accommodating millimeter-wave (mm-wave) bands presents a significant challenge due to substantial difference in frequency. To tackle this issue, we introduce miniaturized quad-port dual-band multiple-input, multiple-output (MIMO) antenna with low mutual coupling (MC) and considerable frequency difference. This MIMO antenna, built on Rogers TMM4 substrate, measures 17.76 × mm 2 boasts dielectric constant 4.5. It incorporates four...

10.1007/s42452-024-05765-w article EN cc-by Deleted Journal 2024-04-04

A printed monopole antenna for millimeter-wave applications in the 5G frequency region is described this research. As a result, proposed resonates three bands that are designated communication systems, including 28 GHz, 38 and 60 GHz (V band). For sake of compactness, coplanar waveguide (CPW) method used. The overall size tri-band 4 mm × 3 0.25 mm. Using watch strap human tissue, such as skin, gives steady results. At antenna's gain found to be 5.29 dB, 7.47 9 respectively. simulated...

10.3390/s22208012 article EN cc-by Sensors 2022-10-20

This research work presents a compact design of Multiple-Input Multiple-Output (MIMO) multiband antenna along with high-isolation characteristics. The presented was designed for 3.50 GHz, 5.50 and 6.50 GHz frequencies 5G cellular, WiFi, WiFi-6, respectively. fabrication the aforementioned undertaken using FR-4 (1.6 mm thickness) substrate material loss tangent relative permittivity about 0.025 4.30, two-element MIMO miniaturized to 16 × 28 1.6

10.3390/mi14061153 article EN cc-by Micromachines 2023-05-30

This article presents a quad-element MIMO antenna designed for multiband operation. The prototype of the design is fabricated and utilizes vector network analyzer (VNA-AV3672D) to measure S-parameters. proposed capable operating across three broad frequency bands: 3–15.5 GHz, encompassing C band (4–8 GHz), X (8–12.4 significant portion Ku (12.4–15.5 GHz). Additionally, it covers two mm-wave bands, specifically 26.4–34.3 GHz 36.1–48.9 which corresponds 86% Ka-band (27–40 To enhance its...

10.3390/s23208563 article EN cc-by Sensors 2023-10-18

In this work, a miniaturized and highly sensitive microwave sensor based on complementary split-ring resonator (CSRR) is proposed for the detection of liquid materials. The modeled was designed CSRR structure with triple rings (TRs) curve feed improved measurement sensitivity. oscillates at single frequency 2.5 GHz, which simulated using an Ansys HFSS simulator. electromagnetic simulation explains basis mode resonance all two-port resonators. Five variations media under tests (MUTs) are...

10.3390/ma16093416 article EN Materials 2023-04-27

A novel compact-slotted four element multiple input output (MIMO) planar monopole antenna is proposed for 5G mmWave N257/N258 and N262 band applications. The antenna, with dimensions of 12 mm × 11.6 0.508 (1.036λo ×1.001λo×0.043λo where λo computed at lowest cutoff frequency), fabricated on a Rogers RT/duroid 5880 (tm) substrate relative permittivity 2.2 dielectric loss tangent 0.0009. suggested consists U-shaped radiating elements (patches) top the material slotted ground bottom. are fed by...

10.3390/mi14081545 article EN cc-by Micromachines 2023-07-31

This article proposes the design, fabrication and measurement of a triple-rings complementary split-ring resonator (CSRR) microwave sensor for semi-solid material detection. The CSRR was developed based on configuration with curve-feed designed together, utilizing high-frequency structure simulator (HFSS) studio. triple rings resonates at 2.5 GHz, performs in transmission mode, senses shift frequency. Six cases sample under tests (SUTs) were simulated measured. These SUTs are Air (without...

10.3390/s23063058 article EN cc-by Sensors 2023-03-12
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