Article
Environmental Sciences
Eunhee Kim, Ilkyu Kim, Wansik Kim
Summary: This paper proposes a new method to design arrays with minimum redundancy, which can significantly increase the virtual array aperture while keeping the size of the transmit and receive antennas the same. The application of this method to subarray-type antennas using multi-channel transceivers is described, along with the analysis of the final beam pattern and its benefits and limitations.
Article
Engineering, Electrical & Electronic
Tetsuya Nakamura, Chedlia Ben Naila, Kentaro Kobayashi, Hiraku Okada, Masaaki Katayama
Summary: This article investigates the performance of a newly designed 4 x 4 optical wireless MIMO system based on linear arrangement, achieving long-distance and high data rate transmission. The study highlights the importance of selecting the appropriate arrangement for optical elements, showing that the linear arrangement system is more immune to calibration errors and achieves successful transmission at 65 m.
IEEE PHOTONICS JOURNAL
(2021)
Article
Computer Science, Interdisciplinary Applications
Xianghui Fan, Shining Li, Xiao-Yu Ma, Zi-Yu Pang, Guan-Long Huang, Rui-Sen Chen
Summary: This article presents a conformal MIMO antenna array for wireless avionics intra-communications (WAIC) system application. The array has good isolation and radiation characteristics, making it suitable for wide signal coverage in aircraft cabins.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2022)
Article
Computer Science, Hardware & Architecture
Arjun Singh, Vitaly Petrov, Hichem Guerboukha, Innem V. A. K. Reddy, Edward W. Knightly, Daniel M. Mittleman, Josep M. Jornet
Summary: This article discusses the prospects and challenges of Terahertz band communications. Despite progress in hardware design, channel models, and signal processing, there are still difficulties in implementing widespread communication systems.
IEEE WIRELESS COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Jue Wang, Ye Li, Yuyu Jia, Jun Zhang, Shi Jin, Tony Q. S. Quek
Summary: The study investigates wireless energy transfer in extra-large massive MIMO Rician channels, proposing different schemes such as training-based WET, LOS beamforming, and energy harvesting. Analytical expressions and a path loss threshold for switching between schemes are derived, with an algorithm proposed for multi-ER scenarios to minimize power consumption. Simulation results show near-optimal performance with reduced implementation complexity.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Fang Fang, Bibo Wu, Shu Fu, Zhiguo Ding, Xianbin Wang
Summary: This paper investigates the energy efficient potential of simultaneous transmission and reflection-reconfigurable intelligent surface (STAR-RIS) in a MIMO enabled NOMA system. An algorithm is proposed to optimize the transmit beamforming and phases of the low-cost passive elements on the STAR-RIS for maximizing system energy efficiency. Simulation results demonstrate the superior energy efficiency performance of the proposed algorithm using NOMA technology over OMA scheme and random phase shift scheme.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2023)
Article
Computer Science, Hardware & Architecture
Rahman Doost-Mohammady, Oscar Bejarano, Ashutosh Sabharwal
Summary: Wireless communications engineering has been a major success story, with a bright future ahead but facing challenges in experiment-based research. Efforts are being made to address these challenges by deploying massive MIMO technology on a city-scale experimental platform for testing and tool development.
Article
Computer Science, Information Systems
Abdullah G. Alharbi, Vishal Sorathiya
Summary: This work investigates the design and performance analysis of an ultra-wideband micro-sized circular patch-shaped Yagi-like MIMO antenna based on graphene. Through mathematical analysis, it is shown that the antenna performs well in three frequency bands within the range of 1-30 THz and meets the criteria for MIMO antennas. Experimental results demonstrate that the antenna has good isolation and gain in the operating bands of 1-10 THz and 15-30 THz.
Article
Engineering, Electrical & Electronic
Vishnu Raj, Nancy Nayak, Sheetal Kalyani
Summary: This paper proposes a blind beam alignment method based on RF fingerprints and utilizes deep reinforcement learning in a multi-base station environment. The method can handle both continuous and discrete actions and achieves high-speed data transmission without any overheads.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2022)
Article
Computer Science, Information Systems
Atoosa Dalili Shoaei, Duc Tuong Nguyen, Tho Le-Ngoc
Summary: This paper proposes an efficient reconfigurable access scheme for massive machine-type communication networks, which divides the frame into grant-based and grant-free segments to maximize the expected throughput and utilizes a sub-optimal solution algorithm with low computational complexity. The performance evaluation demonstrates the advantages of the proposed access scheme in terms of achieved throughput and average packet delay under different conditions.
Article
Engineering, Electrical & Electronic
Jiachi Zhang, Liu Liu, Zhenhui Tan, Kai Wang, Tao Zhou
Summary: This paper proposes a 3-dimensional channel model based on ray-tracing for beamforming in millimeter-wave communication. The distribution of angles between reflection rays and the line-of-sight path is studied through channel simulation with omnidirectional antennas. The results show that the gamma distribution is a better fit for the quasiarrival angular distribution. Additionally, a Gaussian mixture model and expectation-maximization algorithm are used to characterize the relationship between departure and arrival angles.
INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION
(2022)
Article
Biochemical Research Methods
Koji Yamashita, Hirohito Sawahata, Shota Yamagiwa, Shohei Yokoyama, Rika Numano, Kowa Koida, Takeshi Kawano
Summary: This study presents an approach using a 5 μm-diameter needle electrode for stable and long-term recording by reducing tissue damage and implementing a floating electrode architecture.
Article
Computer Science, Information Systems
Wan Amirul Mahyiddin, Ahmad Loqman Ahmad Mazuki, Kaharudin Dimyati, Fuad Erman
Summary: The research proposed a ML method for estimating the location of mobile users based on statistical properties of transmission signal AOD and RSS, combined with MIMO systems. The ML method with AOD and RSS has lower RMSE and can achieve close to theoretical values.
Article
Engineering, Electrical & Electronic
Xufeng Zhou, Lan Tang, Yechao Bai, Ying-Chang Liang
Summary: This paper investigates methods to embed communication signals in FD-MIMO radar for improved performance, achieving the best tradeoff between radar and communication performance through optimizing the transmit beamforming.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2021)
Article
Optics
Tianyu Hou, Xiangteng Li, Hao Luo, Yufeng Hao, Hongchen Chu, Yun Lai
Summary: This study proposes a wireless communication scheme using an optically-transparent metasurface to construct a functionalized metal window, which can significantly enhance the intensity of microwave signals and improve network and data transfer speeds.
Article
Engineering, Electrical & Electronic
Yi-Fan Tsao, Heng-Tung Hsu, Arpan Desai
Summary: This paper proposes a beam-switching antenna module for 5G NR FR2 applications. The module utilizes a single-pole-quadruple-throw switch with high power handling capability, low insertion loss, and higher isolation, integrated with a 4 x 4 Butler matrix and an end-fire antenna array to achieve beam switching characteristics. The system is realized on the Rogers RO3010 substrate, achieving a compact size and a decent impedance bandwidth. Experimental results demonstrate promising RF performance for 5G NR n260 band communication applications.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Yuan Wang, Heng-Tung Hsu, Arpan Desai, Yi-Fan Tsao
Summary: This article presents a new transceiver configuration based on the low-noise power amplifier (LNPA) approach. The LNPA remains always at the ON state and the single-pole-double-throw (SPDT) switches control the conversion between transmitting (Tx) and receiving (Rx) modes. An OTA durability test of the transceiver module is proposed for the first time to ensure the stable operation of the LNPA under such condition.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Multidisciplinary
C. Zebiri, M. L. Bouknia, D. Sayad, I. Elfergani, Moustafa H. Aly, Preecha Yupapin, Sarawoot Boonkirdram, Arpan Desai, J. Rodriguez
Summary: This paper surveys a new class of electromagnetic materials, focusing on the application of the bianisotropic medium in antenna design. The behavior of the magnetoelectric elements in the medium is investigated, revealing their effects on the input impedance and mutual coupling of a printed dipole antenna. The research highlights the significance of this medium in device matching, as well as its impact on input impedance and antenna array coupling.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Md. Ahsan Halimi, Taimoor Khan, Merih Palandoken, Ahmed A. A. Kishk, Yahia M. M. Antar
Summary: RF-based wireless energy harvesting (WEH) and wireless power transfer (WPT) are being recognized for their ability to power a variety of sensors and devices. WEH enables low-power devices to be wirelessly powered by capturing ambient RF energy, while WPT provides the necessary power for high-power devices through intentional RF sources.
IEEE MICROWAVE MAGAZINE
(2023)
Article
Engineering, Electrical & Electronic
A. Amroun, C. Zebiri, Djamel Sayad, Issa T. E. Elfergani, A. Desai, M. L. Bouknia, R. Zegadi, J. Rodriguez
Summary: This paper presents a small-sized MIMO antenna design for UWB applications. The antenna is carefully optimized using HFSS simulation software and achieves a wide bandwidth spanning from 3.1 to 16.3 GHz. Experimental results show good accordance with simulation results, proving the effectiveness of the proposed design. The antenna design also exhibits attractive features such as compact size and good isolation between the radiators.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2023)
Article
Chemistry, Analytical
Ahmed Jamal Abdullah Al-Gburi, Norhanani Abd Rahman, Zahriladha Zakaria, Merih Palandoken
Summary: This article presents the design, fabrication, and measurement of a triple-rings complementary split-ring resonator (CSRR) microwave sensor for detecting semi-solid materials. The sensor operates at 2.5 GHz in transmission mode and shows high sensitivity for Di-water and Turmeric samples. The incorporation of a defective ground structure (DGS) improves the performance of the sensor in microstrip circuits, resulting in a high Q-factor magnitude.
Article
Computer Science, Information Systems
Arpan Desai, Yi-Fan Tsao, Heng-Tung Hsu
Summary: In this study, a high-gain slotted waveguide antenna in substrate-integrated waveguide (SIW) configuration with enhanced bandwidth is proposed. Two different cases fabricated using Rogers RO 4003 substrate are discussed. The results show that the proposed hourglass-shaped slot effectively enhances the operation bandwidth without using additional complicated mechanisms. The proposed antenna exhibited an impedance bandwidth of 3.18% at 38 GHz with 5.8 dBi antenna gain, showing a 1.08% improvement in bandwidth.
Article
Engineering, Electrical & Electronic
Basma M. Yousef, Allam M. Ameen, Arpan Desai, Heng-Tung Hsu, Vigneswaran Dhasarathan, Ahmed A. Ibrahim
Summary: This paper proposes a circularly-polarized (CP) wideband 4-port Multi-input multi-output (MIMO) antenna, which achieves CP through an L-shaped feedline and an orthogonally placed slotted ground plane geometry. The single-fed CP antenna is converted to a 4-port MIMO antenna to achieve higher isolation. The antenna demonstrates an impedance bandwidth of 65.01% and an axial ratio bandwidth of 20.10%. The measured results of the fabricated structure show good agreement with the simulated results.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Samira Mekki, Rami Zegadi, Said Mosbah, Djamel Sayad, Issa Elfergani, Mohamed Lamine Bouknia, Jonathan Rodriguez, Arpan Desai, Merih Palandoken, Chemseddine Zebiri
Summary: In this study, a metamaterial complementary split ring resonator (CSRR) microwave planar sensor for dielectric liquid characterization is investigated using HFSS software. The sensor design allows for different orientations and multiple size possibilities of the test tube, making it possible to explore different resonant frequencies in the 2.1 GHz frequency band. An optimization study is carried out to achieve a high sensitivity and a high-quality factor of the proposed sensor. A parallel RLC resonant circuit is used to better understand the operation and verify the feasibility of the equivalent circuit.
Article
Engineering, Electrical & Electronic
Merih Palandoken, Cem Gocen, Taimoor Khan, Zahriladha Zakaria, Issa Elfergani, Chemseddine Zebiri, Jonathan Rodriguez, Raed A. Abd-Alhameed
Summary: In this article, a 2.45-GHz band microwave sensor (MWS) is introduced for determining the dielectric constant of ethanol-water solutions. The MWS consists of two directly coupled split-ring resonators with a circular ring-shaped detection area for the solution. The prototype of the MWS is fabricated on a Rogers RO4003 substrate with a total size of 12 x 30 mm. The MWS shows good performance in both numerical evaluation and experimental validation, offering the feasibility of identifying complex dielectric parameters and ethanol content concentration.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Multidisciplinary
Amit V. Patel, Arpan Desai, Issa Elfergani, Hiren Mewada, Chemseddine Zebiri, Keyur Mahant, Jonathan Rodriguez, Raed Abd-Alhameed
Summary: This paper proposes a four-element compact dual-band patch antenna operating at 28/38 GHz for millimeter-wave communication systems. The antenna structure consists of a slotted ellipse enclosed within a hollow circle with a connected partial ground at the back. The antenna covers dual-band with a fractional bandwidth of 15.7% (27.12-31.34 GHz) and 4.2% (37.21-38.81 GHz) and achieves a gain of more than 4 dBi at both bands.
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
(2023)
Article
Engineering, Multidisciplinary
Mahmoud A. Abdelghany, Mohamed Fathy Abo Sree, Arpan Desai, Ahmed A. Ibrahim
Summary: A 4-port MIMO antenna with low mutual coupling and UWB performance is designed and developed in this study. Octagonal-shaped antenna elements are arranged rotationally to achieve orthogonal polarization for improved MIMO system performance. The antenna has a wideband impedance bandwidth of 7.5 GHz with good isolation between elements. The simulated and measured results validate the suggested antenna's performance in terms of radiation patterns, gain, and envelope correlation coefficient. Time-domain analysis also confirms the antenna's suitability for wideband applications.
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
(2023)
Article
Computer Science, Information Systems
Meltem Tekcin, Merih Palandoken, Senem Kursun
Summary: In this study, a wearable textile RFID sensor for detecting wetness has been developed and tested. The sensor showed reliable performance in detecting wetness states and can be integrated into remote health monitoring systems.
Article
Multidisciplinary Sciences
Vishal Sorathiya, Malek G. Daher, Issa Elfergani, Chemseddine Zebiri, Arpan Desai, Zoran Vujicic, Jonathan Rodriguez
Summary: This study proposes a log-periodic dipole antenna-shaped MIMO antenna employing graphene resonator material, which operates in the 1-30 THz frequency range and features multiband operation and miniaturization. Numerical analysis of four types of antenna structures is conducted, and various antenna parameters are investigated to check their compatibility for short-distance communication. The proposed THz MIMO antenna demonstrates strong isolation values, a maximum gain of 14 dBi, and an overall bandwidth of 13 THz.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Computer Science, Information Systems
Arpan Desai, Jayshri Kulkarni, M. M. Kamruzzaman, Stepan Hubalovsky, Heng-Tung Hsu, Ahmed A. Ibrahim
Summary: This paper presents a coplanar waveguide (CPW) fed flexible interconnected 4-port MIMO antenna for UWB, X, and Ku band applications. The antenna is characterized and validated using real measurements. The antenna demonstrates good performance and MIMO capability, and performs well under bending conditions.
