Article
Physics, Multidisciplinary
Ata Ollah Mirzaei, Mahdi Asadi, Hamed Ghanbarpour, Amir Musa Abazari, Hadi Tavakkoli
Summary: This paper proposes a new method for calculating the mutual inductance between two arbitrarily positioned, non-identical n-sided planar spiral coils, and verifies the accuracy of the calculation results. The method is not only applicable to coils of different shapes, but also capable of handling errors such as lateral displacement and angular rotation. Experimental results show that the method has a significant advantage in terms of computational time.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Engineering, Electrical & Electronic
Shuo Liu, Jianhui Su, Jidong Lai, Jian Zhang, Haibo Xu
Summary: This article establishes an accurate model for mutual inductance of planar spiral coils and proposes an expression for mutual inductance of planar spiral coils under arbitrary relative positions using Euler Angles. The influence of precession and spin angle on mutual inductance is studied, as well as the differences in calculation results between the accurate model and traditional approximation models.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Telecommunications
Swathi Sugumar, Sakthivel Murugan Santhanam
Summary: A novel approach of using compact coils for magnetic induction underground communication is proposed, with an enhanced model to investigate the influence of soil properties. Analyzing self-inductance and mutual inductance of different coils reveals the superior performance of the filamentary planar spiral square coil in terms of received power.
WIRELESS PERSONAL COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Xin Wang, Junqi Pang, Qiulin Tan, Helei Dong, Nan Zhao, Tao Xue
Summary: A novel double-layer parallel coil model is proposed in this study to enhance the quality factor of the coils, improve the transmission efficiency, and increase the output power of the system for efficient wireless power transfer. Experimental validations and simulation analysis show that the double-layer parallel coil outperforms the conventional single-layer coil under specific conditions.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Computer Science, Information Systems
Nahed H. H. Solouma, Haile Baye Kassahun, Abdulhameed S. S. Alsharafi, Abeer Syed, Michael R. R. Gardner, Sadeq S. S. Alsharafi
Summary: This work introduces a new approach to optimizing the coupling coefficient between the transmitter and receiver coils in wireless power transmission (WPT) systems. By changing the geometries and locations of the coils, a quasi-elliptical parameter value is used to achieve geometry variations from a rhombus to a circular and then a rectangular shape. The configuration with the highest coupling coefficient is selected at the end of the optimization process. The proposed approach is validated through electromagnetic and AC analysis simulations using Ansys software, showing increased power transfer efficiency in WPT.
Article
Energy & Fuels
Jacek Maciej Stankiewicz, Agnieszka Choroszucho
Summary: This study presented the results of numerical and analytical analysis of the Wireless Power Transfer System (WPT). It found that circular coils had higher efficiency in periodic models, while square coils had higher efficiency in aperiodic models, with aperiodic models overall showing higher efficiency values compared to periodic models.
Article
Engineering, Electrical & Electronic
Zhiguang Xing, Yiming Ji, David McCoul, Tao Jin, Jianwen Zhao
Summary: This study optimized the distribution of EMF in planar spiral coils using a model of two coupled coils and a genetic algorithm, which proved to be faster and more efficient compared to traditional optimization methods based on finite element analysis.
ELECTRIC POWER COMPONENTS AND SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Alexis Narvaez, Claudio Carretero, Ignacio Lope, Jesus Acero
Summary: The article presents the optimization procedure of an inductive power transmission (IPT) system using large size spiral printed circuit board (PCB) coils for high-power transfer. The use of PCBs for coil assembly provides advantages in the manufacturing process and offers a low-profile device suitable for space-constrained applications. The study explores the application of Litz-structure braiding techniques to achieve high energy efficiency in the PCB-based IPT system coils.
IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION
(2023)
Article
Energy & Fuels
Jacek Maciej Stankiewicz, Adam Steckiewicz, Agnieszka Choroszucho
Summary: This paper analyzes the conceptual application of a wireless power transfer system with multiple resonators supplying outdoor sensors using a mobile charger. By using a group of identical planar coils as transmitters and receivers, connected to independent power supply circuits, energy transfer can be realized simultaneously, improving the reliability and flexibility of the weather station. The efficiency and load power of the system were compared and discussed, showing that while the solution can provide power to ultra-low-power devices, the efficiency still needs improvement.
Article
Engineering, Electrical & Electronic
Seyedfakhreddin Nabavi, Sharmistha Bhadra
Summary: This study proposes two topologies for planar micro-coils, non-spiral and quasi-spiral, for wireless power transfer applications. The micro-coils can be fabricated on a silicon substrate using a simple microfabrication process and distribute electrical potential and magnetic flux density uniformly. Experimental results show that the proposed micro-coils can wirelessly receive higher power compared to a commercial coil and efficiently charge a super-capacitor in a shorter period.
IEEE SENSORS JOURNAL
(2022)
Article
Computer Science, Information Systems
Qi Le, Ruiming Wu, Jiangyu Chen, Meiling Huang, Yang Fu, Feng Huang, Lijun Wang, Shan Du, Qipeng Li
Summary: This study proposes a multi-transmitter coil array to establish a more uniform magnetic flux density and enhance the performance of wireless power transmission system (WPTS) in the case of coil-couple malposition. The magnetic field distributions of the proposed WPTS with different coil arrays are compared using numerical simulations. Experimental results show that WPTS with a seven-coil array can provide a more uniform magnetic field, with a relative deviation of output power less than 28.55%. This study provides clues for improving the performance of WPTS through different arrangements of transmitter coils.
Article
Engineering, Electrical & Electronic
Jia-Jing Kao, Chun-Liang Lin, Jamie Yang
Summary: This article presents a novel wireless power transmission scheme that incorporates both relay transmission and magnetic field data communication. A resonant inverter with pulsewidth modulation is used to induce longer distance alternating current for power transmission. For data transmission, a magnetic field communication system based on impedance changes and not reliant on extra radio frequency links is realized. Experimental prototype tests verify simultaneous transmission of power and data in compliance with SAE TIR J2954 specifications.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Engineering, Biomedical
Minye Yang, Zhilu Ye, Nabeel Alsaab, Mohamed Farhat, Pai-Yen Chen
Summary: This study addresses the challenge of signal reproducibility and robustness in passive wireless intracranial pressure monitoring by introducing a novel biotelemetry system. The system leverages the unique properties of non-Hermitian radio-frequency electronic systems with PT symmetry to achieve absolute accuracy. In-vitro experimental results show sub-mmHg resolution and ultra-robust wireless data acquisition. This research provides a practical pathway for reliable, real-time wireless monitoring of intracranial pressure and other vital signals from bio-implants and wearables.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Multidisciplinary Sciences
Danilo Brizi, Agostino Monorchio
Summary: This paper presents a general equivalent-circuit interpretation of finite magnetic metasurfaces interacting with an arbitrary arrangement of RF coils operating in the near-field regime. The introduced model provides a physical interpretation and guidelines for the design and understanding of such interactions. The validity of the model is demonstrated through test cases and comparison with experimental measurements.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Electrical & Electronic
Jingjing Li, Shixing Yu, Na Kou, Zhao Ding, Zhengping Zhang
Summary: In this paper, a magnetically coupled resonant wireless power transfer system based on flexible printed circuit coils on a conformal cylindrical surface is designed. The relationship between the self-inductance/mutual inductance of the flexible coil and the bending radius of the conformal cylindrical surface is explored through mathematical analysis and simulations. The results show that as the bending radius decreases, the self-inductance and mutual inductance of the coil decrease nonlinearly. The transmission efficiency also decreases, and the resonant frequency shifts to a higher range.
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2022)
Article
Engineering, Electrical & Electronic
Fanpeng Kong, Maysam Ghovanloo, Gregory D. Durgin
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2020)
Article
Engineering, Electrical & Electronic
Jaemyung Lim, Byunghun Lee, Maysam Ghovanloo
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2020)
Article
Engineering, Electrical & Electronic
Jaemyung Lim, Coskun Tekes, Evren F. Arkan, Ahmad Rezvanitabar, F. Levent Degertekin, Maysam Ghovanloo
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2020)
Article
Engineering, Electrical & Electronic
Ulkuhan Guler, Yaoyao Jia, Maysam Ghovanloo
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2020)
Article
Engineering, Electrical & Electronic
Yuhua Cheng, Chunwu Liu, Minghao Wang, Gaofeng Wang, Maysam Ghovanloo, Wenjun Li
Summary: To accurately capture the activity of large neural populations, researchers have developed a three-layer power transmitting array system capable of generating an omnidirectional and homogeneous magnetic field within the brain, thus improving wireless power transfer efficiency.
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS
(2021)
Article
Engineering, Electrical & Electronic
Pyungwoo Yeon, Sreejith Kochupurackal Rajan, Jessica Falcone, Joe L. Gonzalez, Gary S. May, Ravi V. Bellamkonda, Oliver Brand, Muhannad S. Bakir, Maysam Ghovanloo
Summary: This study presents a micromachining process for small neural probes with a robust design against mechanical and material failures. The probes are made using a silicon die as a substrate supporting components and wound coils, and then hermetically sealed for physical protection. The inductance and Q-factor of the wound coils are studied in relation to power transmission efficiency, and the probe prototypes are estimated for lifetime under accelerated conditions.
IEEE SENSORS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Yuhua Cheng, Wenyu Kang, Gaofeng Wang, Maysam Ghovanloo, Wenjun Li
Summary: The study proposes a method to optimize the efficiency of wireless power transmission systems by varying the trace width and turn-to-turn spacing of the coils and establishing an accurate analytical model. Through validation, it is found that this method can effectively improve system efficiency.
INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS
(2021)
Article
Environmental Sciences
Zhenxuan Zhang, Boris Prilutsky, Andrew J. Butler, Minoru Shinohara, Maysam Ghovanloo
Summary: The study evaluated a tongue-operated exoskeleton system for upper limb rehabilitation, demonstrating successful outcomes in aiding stroke survivors in restoring arm function.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Editorial Material
Engineering, Biomedical
Alison Burdett, Pedram Mohseni, Maysam Ghovanloo, Roman Genov
Summary: The papers in this special section were presented at the 2021 IEEE International Solid-State Circuits Conference.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2021)
Article
Engineering, Biomedical
Ahmad Rezvanitabar, M. Sait Kilinc, Coskun Tekes, Evren F. Arkan, Maysam Ghovanloo, F. Levent Degertekin
Summary: This paper presents an active impedance matching scheme to optimize electrical power transfer and acoustic reflectivity in ultrasound transducers. Leveraging negative capacitance-based impedance matching improves bandwidth and electrical power transfer, while reducing acoustic reflection and crosstalk.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Article
Materials Science, Multidisciplinary
Pyungwoo Yeon, Min-gu Kim, Pingyu Wang, Choongsoon Kim, Oliver Brand, Maysam Ghovanloo
Summary: This paper describes an automated and wireless accelerated heat soak testing system for assessing hermetic failure mechanisms in small mm-sized inductively powered IMDs. The system utilizes a high-throughput readout coil array printed circuit board to test the hermeticity of multiple wireless IMDs simultaneously in harsh environments. An accelerated heat soak test is performed to evaluate electronic durability and estimate the lifetime of the devices.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Proceedings Paper
Computer Science, Information Systems
Ahmad Rezvanitabar, M. Sait Kilinc, Coskun Tekes, Evren F. Arkan, Maysam Ghovanloo, F. Levent Degertekin
Summary: This paper introduces an ultrasound imaging front-end system-on-a-chip that reduces the acoustic reflectivity of the ultrasound transducer array in a broad bandwidth. The system integrates an ultrasound transceiver and an active capacitive impedance cancellation scheme for the first time, designed for low frame rate applications. This system-on-a-chip is used with a CMUT array in the 2-4 MHz range and has successfully demonstrated reduced acoustic reflectivity and imaging capabilities through experiments.
2021 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE (IEEE BIOCAS 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Pengcheng Zhang, Yaoyao Jia, S. Abdollah Mirbozorgi, Maysam Ghovanloo
2020 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Yaoyao Jia, Ulkuhan Guler, Yen-Pang Lai, Yan Gong, Arthur Weber, Wen Li, Maysam Ghovanloo
2020 IEEE INTERNATIONAL SOLID- STATE CIRCUITS CONFERENCE (ISSCC)
(2020)
Article
Computer Science, Information Systems
Ian F. Akyildiz, Maysam Ghovanloo, Ulkuhan Guler, Tevhide Ozkaya-Ahmadov, A. Fatih Sarioglu, Bige D. Unluturk
