Article
Engineering, Electrical & Electronic
Qiang Chen, Jianping Xu, Fei Zeng, Rui Huang, Lei Wang
Summary: An improved three-phase buck rectifier (3ph-BR) is proposed to reduce the voltage stress on switching devices such as MOSFETs. The proposed design allows for the use of cost-efficient and low voltage rating MOSFETs with low on-resistance, making it suitable for high-efficiency and high-density applications. A 1.5-kW experimental prototype is built to verify the analysis results.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Review
Engineering, Biomedical
Amanda Singer, Jacob T. Robinson
Summary: Advancements in implanted bioelectronic technology present opportunities for personalized electronic medicine, with wireless battery-free devices offering advantages such as smaller sizes and reduced failures. However, tradeoffs must be made in power, miniaturization, depth, alignment tolerance, and transmitter distance to ensure safety and efficiency in different devices for specific biological targets. Multiple forms of wireless power transfer are necessary for optimal performance in bioelectronic implants.
ADVANCED HEALTHCARE MATERIALS
(2021)
Article
Engineering, Biomedical
Gyeongho Namgoong, Woojin Park, Franklin Bien
Summary: In this paper, a 13.56 MHz wireless power transfer system with adaptive power delivery and output voltage regulation is presented. The system includes transmitter and receiver chips designed with fully integrated reconfigurable single power stage. The reconfiguration frequency is locked by a phase-locked-loop-based controller to mitigate electromagnetic interference, and circuit delay and power switch size were calibrated in the receiver chip to enhance system efficiency.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2022)
Review
Polymer Science
Brendan Turner, Srivatsan Ramesh, Stefano Menegatti, Michael Daniele
Summary: Resorbable elastomers are a new class of materials used for transient implantable medical devices, known for their tissue-matching mechanical properties that reduce the risks associated with implant removal and promote functional tissue integration. These materials efficiently support all the functions required in IMDs, while offering beneficial mechanical properties and a programmed degradation that eliminates the need for surgical removal.
POLYMER INTERNATIONAL
(2022)
Review
Engineering, Biomedical
Seungwon Yoo, Jonghun Lee, Hyunwoo Joo, Sung-Hyuk Sunwoo, Sanghoek Kim, Dae-Hyeong Kim
Summary: Implantable bioelectronic devices are promising solutions for diseases, but the bulky and rigid conventional devices pose challenges. Recent advances in RF-based power transfer and telemetry offer potential solutions for these issues.
ADVANCED HEALTHCARE MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Qiuting Duan, Changjin Chen, Xu Han, Lin Cheng
Summary: This paper presents a 40.68 MHz active rectifier with a near-zero-quiescent-current inverter-based conduction-time generator for wirelessly powered implantable devices. The proposed scheme achieves near-optimum switching operation with high power conversion efficiency even at very high frequency. The active rectifier is fabricated in a standard 0.18 μm CMOS process and achieves high efficiency throughout the input range.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Engineering, Electrical & Electronic
Abdul Basir, Izaz Ali Shah, Hyoungsuk Yoo
Summary: This study introduces a sphere-shaped (Rxs) coil to improve the power transfer efficiency of wireless power transfer systems for implantable devices, along with a high-efficiency voltage doubler as a rectifier. The Rxs coil shows improved and stabilized PTE under different misalignment conditions.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2022)
Article
Engineering, Electrical & Electronic
O. Pereira-Rial, J. M. Carrillo, P. Lopez, D. Cabello
Summary: The circuit presented is a small size, low-power voltage generator for implantable applications based on a PTAT cell, featuring self-cascode and self-biased design. It uses a cutoff transistor to determine biasing current and keeps self-cascode cells in the subthreshold region, eliminating the need for dedicated startup circuitry. All transistors are regular threshold voltage devices to reduce the impact of process variations on performance. The circuit has been fabricated in standard CMOS 180 nm technology, consuming a total power of 152 pW at an average human body temperature of 36 degrees C, with a minimum supply voltage of 0.6 V and a total layout area of only 1060 square micrometers.
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Vijayanandam Nithiyanandam, Vidhya Sampath
Summary: This article provides a philosophical analysis of recent methodologies and techniques for efficient WPT in implantable devices based on different approaches. The working principle and outcomes of each recent powering method are discussed and mapped, while highlighting the performance, efficiency, operating frequency, and stability of the systems.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
Amit Degada, Himanshu Thapliyal
Summary: This article proposes a low-energy and secure lightweight cryptographic coprocessor design, called 2-SPGAL, which can protect encryption keys, save energy, and resist correlation power analysis attacks. This design can be used for implantable medical devices (IMDs).
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS
(2022)
Article
Chemistry, Analytical
RaviPrakash Magisetty, Sung-Min Park
Summary: Bioelectronic devices have become indispensable in medical preparation, making significant achievements through the integration of engineering and scientific knowledge, as well as advancements in micro and nanotechnologies. In the future, bioelectronics will lead the way to more efficient diagnosis and treatment.
Article
Automation & Control Systems
Amin Ashraf Gandomi, Leila Parsa, Keith A. Corzine
Summary: This article proposes a bidirectional isolated dc-dc converter for shipboard power systems. It utilizes an active 5-level T-type converter and a high-frequency transformer. The converter is optimized to minimize power losses by considering transformer core loss, reactive power, and rms current. Wide band gap devices are used to minimize switching losses. A control method based on Fourier series and decomposition theorem is proposed. The converter features higher efficiency, fault tolerance, and smaller filter size compared to common dual active bridge converters. Experimental results verify its step-up and step-down operations.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Review
Physics, Multidisciplinary
Carly Baker, Klaudia Wagner, Pawel Wagner, David L. Officer, Damia Mawad
Summary: Conducting polymers have shown significant progress in their interaction with biological tissues, with biofunctionalization reducing foreign body response and improving device performance. The covalent attachment of biocompatible or biofunctional groups to the polymer backbone has led to materials with enhanced physical and electronic properties, making them valuable for commercial implantable bioelectronic devices.
ADVANCES IN PHYSICS-X
(2021)
Article
Engineering, Electrical & Electronic
Xun Gao, Hongfei Wu, Shang Gao, Zuoqian Zhang, Yan Xing
Summary: This article proposes a novel two-stage pulsed power supply scheme, utilizing an intermediate bus capacitance and an interleaved half-bridge converter to balance power differences and reduce the value of the storage capacitance. Voltage feedforward control and current preregulation control are introduced to suppress input current fluctuations and improve efficiency.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Izaz Ali Shah, Muhammad Zada, Syed Ahson Ali Shah, Abdul Basir, Hyoungsuk Yoo
Summary: This article presents a highly efficient near-field wireless power transfer system for miniaturized implantable medical devices. The system achieves simultaneous wireless power reception and data telemetry using a flexible metasurface slab and an in-body receiver. Experimental results demonstrate a significant improvement in power transmission efficiency in various scenarios.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2023)
