Review
Biochemical Research Methods
Fei Liu, Monika Heiner, David Gilbert
Summary: Integrated modelling of biological systems is crucial for obtaining a holistic understanding of their dynamics. This paper reviews popular hybrid modelling methods, discussing their significance, formation from single modelling formalisms, and simulation techniques. Future research requirements for promoting integrated modelling of biological systems are also identified.
BRIEFINGS IN BIOINFORMATICS
(2022)
Review
Computer Science, Information Systems
Akinola Segun, Arnesh Telukdarie
Summary: The application of various mechanisms in healthcare is gaining attention due to breakthroughs in digitalizing healthcare. This paper aims to investigate mechanisms for digital healthcare and wearable devices with antenna applications, providing an update on recent developments in healthcare and exploring the potential for future epidemic control with bio-electromagnetic applications.
Article
Engineering, Electrical & Electronic
Chen Yang, Kwok Wa Leung
Summary: A 3-D-printed wideband circularly polarized (CP) multiple-input-multiple-output (MIMO) antenna is proposed, which consists of two CP dielectric resonator antennas (DRAs) covered by a dielectric decoupler. The center-to-center distance between the two DRAs can be made as small as 0.33?(0) with a high isolation using the decoupler. The measured results of a prototype operating in X-band show a -10-dB impedance bandwidth of 21.7% (8.88-11.04 GHz), with an axial-ratio (AR) bandwidth and mutual coupling both less than 3 and -21.4 dB, respectively. The impedance and AR have a wide overlapping bandwidth of 21.7%.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Reza Zaker, Ali Kheirdoost
Summary: The novel broadband matching and decoupling network (MDN) is designed for a symmetric two-element array of microstrip patch antennas, achieving increased efficiency and isolation through the excitation of new half-modes with parallel shorting posts. A resonator-based equivalent-circuit model is used to study the coupling mechanism. Overall, the proposed design outperforms other state-of-the-art approaches.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2021)
Article
Computer Science, Information Systems
Yi Lei, Yang Yang, Yanzhe Wang, Kai Guo, Yubin Gong, Zhongyi Guo
Summary: This experimental letter demonstrates the performance enhancement of 2x2 MIMO communication based on orbital angular momentum (OAM) by utilizing the diversity of different OAM modes. By using a versatile OAM antenna, the throughput of MIMO communication can be improved by up to 30.50% or 6.59% respectively.
IEEE WIRELESS COMMUNICATIONS LETTERS
(2021)
Article
Automation & Control Systems
Fujin Jia, Junwei Lu, Yongmin Li
Summary: In this article, a control algorithm is proposed to solve the global stabilization control problem of MIMO nonlinear systems with UFVs. The algorithm is based on a Lemma dealing with UFVs and the backstepping method. It effectively solves the global stabilization control problem, reduces conservatism in UFV assumptions, and addresses the explosion of terms problem of backstepping. The algorithm ensures that all signals of the closed-loop system converge to the origin.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Review
Chemistry, Multidisciplinary
Rahul Dev Mukhopadhyay, Ayyappanpillai Ajayaghosh
Summary: Metallo-supramolecular polymers have gained attention and development in the field of soft materials due to their well-defined topologies and dynamic metallosupramolecular interactions. These stimuli-responsive supramolecular structures have potential applications in optoelectronic device fabrication, but challenges remain in developing systems with offbeat applications and achieving precise control. Controlling the morphology of these soft materials also presents challenges. This review discusses recent developments and future directions, including synthetic methodologies and programmed synthesis techniques, for constructing stimuli-responsive metallosupramolecular systems.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Chemistry, Analytical
Rong Yang, Shuqi Xi, Qibo Cai, Zhizhou Chen, Xiaohang Wang, Gui Liu
Summary: The proposed compact dual-band MIMO antenna, with high isolation and small size, is suitable for 5G and 4G applications.
Article
Engineering, Electrical & Electronic
Wenliang Song, Xiao-Wei Zhu, Lei Wang, Wei Hong
Summary: A simple structure E-plane decoupled millimeter wave (mmW) MIMO antenna based on current cancellation model is proposed in this communication. The coupling current model is established by analyzing the coupling current, and a decoupling branch antenna is designed using current cancellation method. The applicability of the antenna in large arrays is verified through measurement results, achieving high isolation requirements.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Xiao Tan, Xide Mei, Ke-Li Wu
Summary: In this article, a new scheme for enhancing the cross-polarization discrimination (XPD) of a dual-polarized dipole antenna pair is proposed and applied to a dipole antenna array. The scheme induces coherent currents on a pair of vertical monopoles from the feeding line, effectively compensating for the electric field component in a wide scanning angle. Simulation and experimental results demonstrate the effectiveness of the proposed scheme.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Review
Medicine, General & Internal
Xian-Mei Qi, Ya Luo, Mei-Yue Song, Ying Liu, Ting Shu, Jun-Ling Pang, Jing Wang, Chen Wang
Summary: Pneumoconiosis is a spectrum of pulmonary diseases caused by inhaling mineral dust, with chronic inflammation and progressive fibrosis leading to respiratory or heart failure and high mortality. The global threat of pneumoconiosis is attributed to inadequate occupational protection and lack of early diagnostic and effective treatment methods.
CHINESE MEDICAL JOURNAL
(2021)
Article
Computer Science, Interdisciplinary Applications
Wen-Feng Zeng, Qing-Xin Chu
Summary: An antenna decoupling method based on modal control is proposed in this paper, which excites a pair of decoupling modes simultaneously to achieve decoupling. The effectiveness of this method is validated through the analysis and design of a head-to-head antenna pair. Additionally, an eight-element MIMO antenna is designed, fabricated, and measured to demonstrate the good performance of the proposed method.
INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
(2022)
Article
Computer Science, Information Systems
Ming Xu, Jingwei Zhang
Summary: This paper presents a circularly polarized multiple-input multiple-output dielectric resonator antenna for 5G millimeter-wave applications. The antenna achieves wideband impedance and optimized axial ratio performance through the use of modified cross slots and complementary split ring resonators.
Review
Oncology
D. R. Mani, Karsten Krug, Bing Zhang, Shankha Satpathy, Karl R. Clauser, Li Ding, Matthew Ellis, Michael A. Gillette, Steven A. Carr
Summary: Genomic analyses have greatly impacted cancer research by identifying driver mutations and developing targeted therapies. However, the functions of most somatic mutations and copy number variants in tumors remain unknown. Proteogenomics, which integrates proteins and their modifications with genomic data, has emerged as a new field and is providing valuable insights into malignant transformation and therapeutic outcomes.
NATURE REVIEWS CANCER
(2022)
Review
Biology
Yiheng Zhao, Linchan Yu, Shuchen Zhang, Xiangyu Su, Xiang Zhou
Summary: This review summarizes the formation and modes of action of eccDNA in eukaryotic cells, as well as its role as a disease biomarker and its regulatory mechanism. The authors discuss the future prospects of eccDNA, suggesting that it holds great promise in biomedical research and clinical application.
Article
Engineering, Electrical & Electronic
Samaneh Sadeghi-Marasht, Mohammad Reza Rahimi, Mohammad S. Sharawi, Anding Zhu
Summary: This paper proposes a novel single-layer planar lens antenna that can maintain circular polarization (CP) of the incoming CP wave and enhance the antenna gain. The symmetric design of the lens unit cell ensures a 90-degree phase difference and high amplitude between two modes of the incoming CP wave. The phase variations created by the designed unit cells result in antenna gain enhancement. The proposed lens is tested with two different feeding antennas and achieves high gains and an impedance bandwidth below 3 dB.
IET MICROWAVES ANTENNAS & PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Kanishka Katoch, Naveen Jaglan, Samir D. Gupta, Mousa Abdollahvand, Mohammad S. Sharawi
Summary: This paper presents an ultraminiaturized bandstop closed-loop 2.5D frequency-selective surface (FSS) for sub-6 GHz 5G wireless communication. The proposed structure forms a modified closed-loop design by interconnecting metallic elements with four metallic vertical vias. It achieves a resonant notch at 3.62 GHz and effectively blocks the entire sub-6 GHz 5G band. The prototype shows good agreement between simulated and measured results and exhibits polarization insensitivity.
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Rakhesh Singh Kshetrimayum, Mohit Mishra, Sonia Aissa, Shiban K. Koul, Mohammad S. Sharawi
Summary: This letter calculates the diversity order (DO) and diversity measure (DM) of multiple-input multiple-output (MIMO) antennas in various practical scenarios of single-user, multiuser, and massive MIMO wireless communications. These metrics are computed using the antenna correlation coefficient (ACC) matrix. The DO is obtained from the rank of the ACC matrix, while the DM is derived from the trace and Frobenius norm of the ACC matrix. Numerical results are presented, highlighting that the DM captures the impact of antenna correlation on diversity gain more effectively than the DO.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(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
Mohit Mishra, Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Mohammad S. Sharawi, Ahmed A. Kishk
Summary: This paper presents a sector-shaped compact p /8 partial substrate integrated waveguide cavity antenna from the TM220 diagonal mode of the SIW cavity. A 61% size miniaturization is achieved compared to the SIW rectangular cavity in its complete mode configuration. The compact cavity radiator is used as an element of a compact 8-port multiple-input-multiple-output (MIMO) antenna.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Chao Li, Mohammad S. Sharawi, Raj Mittra
Summary: An adaptive frequency sampling (AFS) strategy is proposed to reduce the solution time for wideband scattering from objects buried in layered media. The AFS algorithm selects frequency samples (FSs) based on error-estimators, minimizing the number of required samples while guaranteeing solution convergence. Numerical results show significant reduction in sample requirements without compromising accuracy.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Mohammad Moradi, Mohammad S. Sharawi, Ke Wu
Summary: This article presents and derives an analytical model for accurately analyzing lossy dielectric waveguides in the THz regime. By considering the dielectric loss of waveguides and applying the impedance boundary condition (IBC), the proposed method can accurately simulate the waveguiding behavior. The efficiency of the proposed method in terms of simulation runtime is significantly improved compared with some commercial EM software packages, while maintaining a minimum accuracy of 95%.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2023)
Article
Computer Science, Information Systems
Saeed Haydhah, Ryan Gold, Zhiyong Dong, Fabien Ferrero, Leonardo Lizzi, Mohammad S. Sharawi, Ahmed A. Kishk
Summary: A new compact multifunctional pattern reconfigurable 2x2 antenna array at 3.65 GHz with high gain and 16 MIMO modes is proposed. The array consists of single-element antennas with U-slots etched on the ground plane and fed using a reconfigurable feeding network. The antenna array achieves high efficiency, peak gain, and impedance-bandwidth, making it suitable for small cell base-station applications.
Article
Engineering, Electrical & Electronic
Reza Shamsaee Malfajani, Hamed Niknam, Sampada Bodkhe, Daniel Therriault, Jean-Jacques Laurin, Mohammad S. S. Sharawi
Summary: This paper presents the design and implementation of a dual wide-band mushroom-shaped antenna. The antenna consists of a cylindrical dielectric resonator (cDRA), a cylindrical dielectric rod as a waveguide (cDR), and a dielectric lens (DL). The antenna operates at sub-6GHz and mm-wave frequencies, achieving high gains. The dual wide-band antenna is designed and fabricated with different dielectric constants, and 3D printing is used to control the dielectric constant of printed components. Measurement results show significant gains and bandwidths in both frequency bands.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Reza Shamsaee Malfajani, Hamed Niknam, Sampada Bodkhe, Daniel Therriault, Jean-Jacques Laurin, Mohammad S. S. Sharawi
Summary: This paper presents the concept of encapsulated dielectric resonator antennas (E-DRAs) where smaller-sized DRAs with a specific permittivity are embedded inside a larger DRA with a lower permittivity, enabling efficient radiation at two widely separated and widely covered frequency bands. The proposed E-DRAs cover the sub-6-GHz band and mm-wave band for 5G and beyond applications, and are fabricated using fused filament fabrication (FFF) 3D printing process. The measurements show high gain and efficiency at both bands, with the achieved bandwidths being the highest among previous works on dual-band antennas.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Reza Shamsaee Malfajani, Jean-Jacques Laurin, Mohammad S. S. Sharawi
Summary: This paper presents the design and implementation of a wideband single-mode dielectric resonator antenna (DRA) with a substrate integrated cavity-backed structure. The DRA is excited by two short-circuited striplines inside the substrate integrated cavity (SIC) to provide stable radiation characteristics and low cross polarization levels. The coupling between the cavity and the cylindrical DRA is achieved through an annular slot, resulting in the excitation of the fundamental HEM11 delta mode over a wide frequency band. The measured performance shows a high gain of 8.2 dBi at 5.45 GHz and a 1-dB bandwidth of 23%.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Usman Qureshi, Muhammad Umar Khan, Mohammad S. Sharawi, Shah Nawaz Burokur, Raj Mittra
Summary: This paper presents a broadband graded index all-dielectric (GID) lens that enables field decorrelation and decoupling of closely spaced wideband multiple-input-multiple-output (MIMO) antenna elements. The proposed technique achieves a reduction in correlation coefficient rho by tilting the individual antenna element radiation patterns and suppressing surface wave propagation inside the antenna substrate using the concept of transformation electromagnetics (TE). Simulated and measured results validate the effectiveness of the proposed technique, which provides reduced rho for both isotropic and non-isotropic propagation environments and enhanced port isolation without reducing the fractional bandwidth (FBW).
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2023)
Article
Engineering, Electrical & Electronic
Md Rasheduzzaman Al-Amin, Chao Li, Mohammad S. Sharawi
Summary: A lumped element-based equivalent circuit model for connected slot antenna arrays (CSAA) is proposed, which accurately represents the impedance and reflection characteristics. It provides a generalized design procedure for antenna design and analysis in microwave and millimeter wave bands.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Mohammad Reza Rahimi, Mohammad S. Sharawi, Ke Wu
Summary: This work investigates the application of high-order space harmonics to a hybrid nonradiative dielectric waveguide and substrate-integrated square waveguide for the design of multi-functional dually polarized leaky-wave antennas. The study demonstrates the flexibility in design and feasibility through two case studies, showcasing the diverse characteristics of LWAs with different polarization effects on unit-cell geometrical structures.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
Reza Shamsaee Malfajani, Farhad Bin Ashraf, Mohammad S. Sharawi
Summary: In this work, a shared aperture, dual-band antenna system targeting the sub-6GHz and mm-wave bands is proposed. The system is compact and has multiband operation capabilities.
IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION
(2022)