Article
Chemistry, Analytical
Shuhang Bie, Shi Pu
Summary: To meet the increasing need for high-data-rate and broadband wireless communication systems, research and development on devices and circuits under Millimeter, Sub-Millimeter, or even Terahertz (THz) frequency bands is gaining attention. This paper proposes a novel 300 GHz microstrip antenna array based on dual-surfaced multiple split-ring resonators (DSMSRRs), achieving good radiation characteristics and meeting design requirements. Additionally, a dual-band antenna is designed with working frequency bands of 274.1-295.6 GHz and 306.3-313.4 GHz, confirmed through simulation.
Article
Chemistry, Analytical
Cameron Rohan, Jacques Audet, Adrian Keating
Summary: This study explores the use of split-ring resonator (SRR) designs to create a planar antenna that addresses potential issues associated with protruding antennas, achieving successful designs for operation at LoRa frequencies while considering the impact of geometrical and physical tolerances.
Article
Engineering, Electrical & Electronic
Yan Wang, Feng Xu, Zhengwei Du
Summary: A new method of embedding an annular ring into the superstrate is proposed to reduce the negative effect of the superstrate on the microstrip omnidirectional antenna. The working mechanism of the annular ring is analyzed and an equivalent model is established to determine its dimensions. Experimental results show that the proposed method effectively mitigates the negative effects of ripples in the radiation pattern and reduces the radiation at the lower hemisphere. It can serve as a promising candidate in practical applications without the need for optimizing the superstrate's parameters.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Nanoscience & Nanotechnology
Hao-Yuan Tsai, Che-Chin Chen, Chun-Yen Chen, Yi-Jie Lin, Wei-Chun Chen, Hung-Pin Chen, Yu-Wei Lin, Takuo Tanaka, Ta-Jen Yen
Summary: In this study, the radiation patterns of single-split ring resonators (SSRRs) and double-split ring resonators (DSRRs) in the vertical direction were tailored by reconfiguring the resonator geometries. Vertical metamaterials were fabricated to achieve unequal arm lengths for controlling the floating split angle of the resonators. The combination of SSRRs and DSRRs effectively reconfigures the radiation direction in the infrared (IR) region.
Article
Chemistry, Analytical
Khuzairi Masrakin, Siti Zuraidah Ibrahim, Hasliza A. Rahim, Saidatul Norlyana Azemi, Ping Jack Soh, Sugchai Tantiviwat
Summary: This paper analyzes a microwave resonator sensor based on a square split-ring resonator operating at 5.122 GHz for permittivity characterization of a material under test (MUT). A single-ring square resonator edge (S-SRR) is coupled with several double-split square ring resonators to form the structure (D-SRR). The function of the S-SRR is to generate a resonant at the center frequency, whereas D-SRRs function as sensors, with their resonant frequency being very sensitive to changes in the MUT's permittivity.
Article
Chemistry, Physical
Ibraheem Al-Naib, Ijlal Shahrukh Ateeq
Summary: In this paper, a new approach to excite sharp asymmetric resonances using a single completely symmetric split-ring resonator (SRR) inside a rectangular waveguide is proposed. The method is based on an asymmetry in the excitation of a symmetric split-ring resonator by placing it away from the center of the waveguide along its horizontal axis. In turn, a prominent asymmetric resonance was observed in the transmission amplitude of both the simulated results and the measured data. Using a single symmetric SRR with an asymmetric distance of 6 mm from the center of a rectangular waveguide led to the excitation of a sharp resonance with a Q-factor of 314 at 6.9 GHz. More importantly, a parametric study simulating different overlayer analytes with various refractive indices revealed a wavelength sensitivity of 579,710 nm/RIU for 150 mu m analyte thickness.
Article
Chemistry, Analytical
Eduardo Jarauta, Juan Carlos Iriarte, Francisco Falcone
Summary: The development of context-aware environments and applications requires a strong connectivity, which calls for new spectral bands and radio resource management functionalities in both current 5G and future 6G wireless communication systems. This presents challenges in implementing wireless transceivers and radiating systems in terms of device integration, miniaturization, and element isolation. This study proposes high-performance miniature devices using metamaterial-inspired complementary resonators, which demonstrate excellent agreement between analytical circuit models and electromagnetic simulations. The design flexibility allows for easy tunability and frequency scalability. However, the presented devices are just a fraction of the potential combinations for integration in future wireless communication systems.
Article
Optics
Metin Sagik, Muharrem Karaaslan, Emin Unal, Oguzhan Akgol, Mehmet Bakir, Volkan Akdogan, Ersin Ozdemir, Yadgar Abdulkarim
Summary: An artificial neural network is used to design and determine the dimensions of a metamaterial structure placed on a patch antenna, improving the antenna's performance and achieving better reflection coefficient and quality factor.
OPTICAL ENGINEERING
(2021)
Article
Chemistry, Analytical
Mohammad Alibakhshikenari, Bal S. Virdee, Taha A. Elwi, Innocent D. Lubangakene, Renu K. R. Jayanthi, Amer Abbood Al-Behadili, Zaid A. Abdul Hassain, Syed Mansoor Ali, Giovanni Pau, Patrizia Livreri, Sonia Aissa
Summary: This paper presents a non-invasive measurement technique to determine the permittivity of materials based on a modified metamaterial unit-cell sensor. By tightly coupling opposite sides of the sensor, two distinct resonant modes are excited, and perturbation of the fundamental mode is used to determine the permittivity. The sensitivity of the sensor is enhanced four-fold by constructing a tri-composite split-ring resonator.
Article
Computer Science, Hardware & Architecture
K. Mahendran, R. Gayathri, H. Sudarsan
Summary: This paper presents a quad band Triangular Microstrip antenna for multi-functional communication devices, with a compact design and high performance, achieving good return and gain in multiple frequency bands.
MICROPROCESSORS AND MICROSYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Hakim Kharroubi, Tarik Bouzian Berbar, Azzeddine Nacer, Hocine Moulai
Summary: A new approach to enhance the radiation efficiency of microstrip patch antennas by a quarter-wavelength antireflection superstrate is proposed in this paper, based on dielectric right-handed metamaterial (MM) built with U-shaped cells. The moments method in the spectral domain predicts a maximum radiation efficiency of 78% for disk microstrip antenna combined with quarter-wavelength dielectric antireflection superstrate. The design, optimisation, and characterisation of the metamaterial layer are well described in the study.
INTERNATIONAL JOURNAL OF ELECTRONICS
(2022)
Article
Telecommunications
S. Karthigaiveni, R. Pandeeswari, S. Deivalakshmi
Summary: A two-element metamaterial antenna with aperture coupling is proposed for multiple input multiple output applications in the frequency band of 7.525-9.1 GHz. It achieves a maximum of 47 dB isolation, 18.94% fractional impedance bandwidth, and a peak gain of 8.15 dB. The low-profile antenna is suitable for X-band military applications.
WIRELESS PERSONAL COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Chao Ni, Jiayue Jiang, Wei-Jun Wu, Luyu Zhao, Zexing Fan
Summary: This paper presents a method using metamaterial screen to address the coupling problem between shipborne antennas, which effectively reduces the interference between shipborne antennas.
Article
Engineering, Electrical & Electronic
Wen-Jing Wu, Wen-Sheng Zhao, Da-Wei Wang, Bo Yuan, Gaofeng Wang
Summary: The paper introduces an ultrahigh sensitivity microwave sensor for retrieving the complex permittivity of liquid samples. By combining complementary split-ring resonators and complementary electric-LC resonators, the proposed sensor achieves high precision detection and accurate extraction of complex permittivity through optimized structural design.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Mohammad Ameen, Raghvendra Kumar Chaudhary
Summary: This work presents a new efficient approach for enhancing antenna bandwidth and reducing cross-polarization in the 2.4 GHz ISM band, utilizing ENG-TL antenna with loaded meander line inductor and mushroom meta-resonator. The proposed antenna achieves extended bandwidth, low cross-polarization levels, improved gain, and high gain-to-area ratio, making it suitable for the specified frequency range.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Asim Ghalib, Mohammad S. Sharawi, Raj Mittra, Hussein Attia, Atif Shammim
Summary: A novel four-element collocated travelling wave SIW MIMO antenna for mm-wave bands with a matching bandwidth of over 4 GHz and a measured gain of 15 dBi is presented. The antenna elements are collocated to reduce size, beams are spatially isolated to lower correlation coefficients, and tilted beams eliminate the need for a beam switching network. The compact design forms four distinct beams towards +/- 10 degrees and +/- 30 degrees.
IET MICROWAVES ANTENNAS & PROPAGATION
(2021)
Article
Nanoscience & Nanotechnology
Muhirah A. Almessiere, Yassine Slimani, Norah A. Algarou, Maksim G. Vakhitov, Denis S. Klygach, Abdulhadi Baykal, Tatyana I. Zubar, Sergei V. Trukhanov, Alex V. Trukhanov, Hussein Attia, Murat Sertkol, Ismail A. Auwal
Summary: This study investigates the synthesis and magnetic properties of Sr0.5Ba0.5ScxFe12-xO19/NiFe2O4 hard-soft nanocomposites, revealing that samples with Sc3+ doping exhibit complete exchange coupling behavior, while the saturation and remanent magnetizations decrease with increasing Sc content. Strong electromagnetic absorption was observed in all samples, with potential applications in high-frequency devices and radar-absorbing technology.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Mus'ab G. Magam, Hussein Attia, Khurram Karim Qureshi, Sharif Iqbal M. Sheikh
Summary: A novel electromagnetic-based method is proposed to monitor sulfur deposition in natural gas pipelines. The method exploits the alteration of antenna resonance behavior caused by the deposited sulfur, and can accurately estimate the thickness of the sulfur layer.
IEEE SENSORS JOURNAL
(2022)
Article
Computer Science, Information Systems
Yasser Nabil, Hesham ElSawy, Suhail Al-Dharrab, Hassan Mostafa, Hussein Attia
Summary: This article studies data aggregation in large-scale IoT networks and develops a novel mathematical model to characterize the interplay between data granularity, transmission reliability, and delay. Two accurate approximations based on Poisson point process are proposed for transmission reliability analysis. A PH/PH/1 queueing model is proposed for delay analysis.
IEEE INTERNET OF THINGS JOURNAL
(2022)
Article
Multidisciplinary Sciences
Muhammed S. Boybay, Kenan Cicek
Summary: A microwave hydrogen sensor has been proposed in this study for detecting hydrogen leakage, and its performance has been investigated using analytical modeling and numerical analysis tools. The results show that a wide range of sensitivity levels can be achieved with optimal geometrical parameters of the sensor structure, providing a potential solution for future uses.
ADVANCED THEORY AND SIMULATIONS
(2022)
Article
Engineering, Electrical & Electronic
Yaqub Mahnashi, Khurram Karim Qureshi, Abdullah A. Al-Shehri, Hussein Attia
Summary: This article presents a microwave-based system that can detect the glucose level in aqueous solutions noninvasively. The system generates a microwave signal and transmits it through the sample under test. The received signal is conditioned and the change in the dc output voltage is used to detect the glucose level. The system is experimentally verified and compared with previous systems.
IEEE SENSORS JOURNAL
(2023)
Article
Computer Science, Information Systems
Hussein Attia, Ahmad Abdalrazik, Mohammad S. Sharawi, Ahmed A. Kishk
Summary: This paper proposes a novel millimeter-wave wideband circularly polarized antenna array for Internet of Things applications. The design uses elliptically shaped dielectric resonator antennas to improve radiation characteristics and achieve circular polarization. Two different sequential-phase corporate feed networks are studied to obtain wider impedance, gain, and axial ratio bandwidths. The proposed antenna exhibits an impedance bandwidth of 35%, a gain bandwidth of 19.3%, and an axial ratio bandwidth of 22.6%. The results show that this wideband circularly polarized antenna has potential in preventing polarization mismatch losses between IoT devices and satellites.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Mousa Al-Omari, Hussein Attia, Khurram K. Qureshi, Sharif I. M. Sheikh
Summary: This letter presents the design and experimental verification of a frequency-reconfigurable patch antenna printed on a composite substrate made of a dielectric and a magnetic metamaterial. The proposed antenna achieves a 158% increase in the frequency tuning range by optimizing the constructive coupling between magnetized ferrite slabs and split-ring resonators. The composite substrate has negligible effects on the antenna radiation characteristics.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Yasser Nabil, Hesham ElSawy, Suhail Al-Dharrab, Hussein Attia, Hassan Mostafa
Summary: This article proposes a URDC-UL communication scheme for airborne networks, where base stations are mounted on UAVs for UL transmissions and data collection. Novel spatiotemporal mathematical models are developed to account for various factors such as UAV-BS densities, mobility, altitude, antenna directivity, ground-to-air channel, and temporal traffic. The results show the sensitivity of the URDC-UL scheme to the hovering to traveling time ratio, which should be carefully adjusted for maximizing performance gains.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Proceedings Paper
Computer Science, Interdisciplinary Applications
Yasser Nabil, Hesham ElSawy, Suhail Al-Dharrab, Hussein Attia, Hassan Mostafa, Ahmed Khalil, Ibrahim Qamar
Summary: This paper proposes mobile aerial base stations (BSs) for ultra-reliable device-centric downlink communication. The BSs are carried on unmanned aerial vehicles (UAVs) that transmit data to devices when they are hovering close to the scheduled device. The performance of the proposed system is compared to a network-centric downlink scheme, and the transmission success probability is derived using stochastic geometry, taking into account various factors. The device-centric scheme outperforms the network-centric one in terms of downlink energy efficiency and offers constant performance for all devices regardless of their locations.
2023 IEEE INTERNATIONAL CONFERENCE ON SMART MOBILITY, SM
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Yaqub Mahnashi, Khurram Karim Qureshi, Abdullah Al-Shehri, Hussein Attia
Summary: This study presents a non-invasive method using a microwave-based system to measure the glucose level in water solutions. The glucose sensor is created by placing the glucose-water solution between two RF microstrip patch antennas resonating at 5.7 GHz. A conditioning circuit is used to process the received signal and the variation in DC output voltage on the receiver side is observed to measure the glucose concentration. Experimental validation using glucose-water testing samples confirms the relationship between glucose concentration and DC output voltage within the range of 0-5000 mg/dL.
2023 INTERNATIONAL MICROWAVE AND ANTENNA SYMPOSIUM, IMAS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Oludayo Sokunbi, Hussein Attia, Abubakar Hamza, Atif Shamim, Ahmed A. Kishk
Summary: This study presents a low-cost innovative MIMO antenna configuration with minimal separation between the radiating elements and high isolation over a wide frequency band. The use of precisely designed slots on the radiating patches improves interelement isolation throughout the mm-wave band. The proposed self-isolation method achieves elements isolation better than 70 dB with a small inter-element spacing.
2023 INTERNATIONAL MICROWAVE AND ANTENNA SYMPOSIUM, IMAS
(2023)
Article
Engineering, Electrical & Electronic
Oludayo Sokunbi, Hussein Attia, Abubakar Hamza, Atif Shamim, Yiyang Yu, Ahmed A. A. Kishk
Summary: This paper proposes a simple novel technique for self-isolating a MIMO antenna for mm wave applications. The technique involves designing rigorously optimized slots on the radiating patch of the antenna to enhance inter-element isolation and increase bandwidth. The novel mm-wave antenna exhibits high impedance bandwidth, isolation, efficiency, and low envelope correlation coefficient.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Abubakar Hamza, Abdelhalim Chaabane, Hussein Attia
Summary: A new design of a patch antenna with a broad bandwidth and high gain is demonstrated in this work. The proposed antenna achieves a wide impedance bandwidth of 32-43.1 GHz and a 3-dB radiation bandwidth of 12.6%. It utilizes a novel single layer metamaterial-based superstrate to significantly improve gain over a wide bandwidth.
2022 16TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)
(2022)
Article
Computer Science, Hardware & Architecture
Kamal M. Harb, Sheikh Sharif Iqbal Mitu, Mahfuz Ullah, Hussein Attia
Summary: This article proposes an analytical model for layer-based DUSA storms to monitor electromagnetic attenuation. Experimental validation using a lab-based setup showed agreement with a professional simulator model. The simulation allowed for monitoring of attenuation due to different particles in different layers.
IEEE CANADIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING
(2021)
