Cage-Embedded Crown-Type Dual Coil Wireless Power Transfer Based Microwave Brain Stimulation System for Untethered and Moving Mice

Kim, Jinhyun; Park, Sanggeon; Oh, Seongwoog; Huh, Yeowool; Cho, Jeiwon; Oh, Jungsuek

doi:10.1109/tbcas.2023.3255248

Cited by 6 publications

(2 citation statements)

References 51 publications

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“…Implantable medical devices (IMDs) have demonstrated remarkable potential in diagnosing and treating organ dysfunctions and have obtained significant research and attention [1][2][3][4]. These devices, including cochlear implants [1], pacemakers [2], deep brain stimulators [3], and retinal prostheses [4], rely on wireless power transmission (WPT) for extended operation, as shown in Figure 1. IMD power consumption generally ranges from microwatts to hundreds of milliwatts, depending on the application.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Wireless Power and Data Transmission System for Medical Implant Devices Using ASK Modulation

Zhu,

Tahir,

et al. 2024

Energies

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Wireless power and data transmission (WPDT) solutions for medical implants are highly desired. However, achieving a high-power transmission efficiency and data rate simultaneously over an inductive link remains a significant challenge. This paper presents an innovative WPDT circuit that incorporates additional MOSFETs with an inductor in a Class-E power amplifier (PA), achieving amplitude-shift keying (ASK) modulation to address this issue. Firstly, the efficiency of the inductive power transmission link and Class-E PA was analyzed, providing design insights. Then, leveraging the insights, the proposed circuit was designed in such a way that it could effectively switch between two load networks to maintain high transfer efficiency for ASK modulation. Based on the load networks, the relationship between introducing the inductor’s value and the data modulation index (MI) was derived to help achieve the desired high-power transmission efficiency. Additionally, the design and calculation of the proposed circuit are also presented. Finally, the proposed circuit was validated through simulations and experiments, demonstrating a power delivery to a load of 84.1 mW with a power transmission efficiency of 70.8% at a data rate and carrier frequency of 3 Mbps and 16 MHz, respectively. Furthermore, the bit error rate (BER) is less than 10−6 with an MI of 10%.

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Section: Introductionmentioning

confidence: 99%

High-Performance Wireless Power and Data Transmission System for Medical Implant Devices Using ASK Modulation

Zhu,

Tahir,

et al. 2024

Energies

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“…Using multiple links for SWPDT is a possible solution for this trade-off, as we can design the power and data links separately. Some state-of-theart works [10], [11], [12] have been reported using multiple links for SWPDT design, unfortunately, these designs are complex to implement and suffer from crosstalk between the different links [10]. Therefore, for the requirement of simpler design and smaller size of IMDs, it is necessary to design SWPDT over a single inductive link and to address this trade-off at the same time [13], [14], [15], [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous High-Efficiency Power Delivery and Energy-Efficient Forward Data Transmission Over Single Inductive Link

et al. 2023

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This paper presents a system for simultaneous wireless power and data transfer (SWPDT) over a single inductive link. We design the frequency-splitting inductive link to address the trade-off between high power transfer efficiency (PTE) and high data rate (DR). An active rectifier is designed for high power conversion efficiency. Forward data communication is based on frequency-shift keying (FSK) modulation to support high DR transmission while delivering uninterrupted power. Moreover, we proposed low-power FSK demodulation circuits to further improve the energy efficiency of the data demodulation. The system is implemented with 180nm CMOS process and occupies an area of 0.836mm 2 . The post-layout simulation results show that the overall PTE (including the resonant tanks and the active rectifier) of the SWPDT system can be up to 76.5% while delivering 40mW power to the load. Meanwhile, a data rate of 1.11Mbps can be achieved. The power consumption for data demodulation is 69.1µW, showing an energy efficiency of 62.2pJ/bit. The proposed SWPDT system based on a single inductive link shows potential for implantable biomedical applications.INDEX TERMS Simultaneous wireless power and data transfer (SWPDT), frequency splitting, energy efficient, active rectifier, injection lock, shifted limiter.

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Advancements in non-invasive microwave brain stimulation: A comprehensive survey

Pereira,

Jagatheesaperumal,

Benjamin

et al. 2024

Physics of Life Reviews

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Cage-Embedded Crown-Type Dual Coil Wireless Power Transfer Based Microwave Brain Stimulation System for Untethered and Moving Mice

Cited by 6 publications

References 51 publications

High-Performance Wireless Power and Data Transmission System for Medical Implant Devices Using ASK Modulation

High-Performance Wireless Power and Data Transmission System for Medical Implant Devices Using ASK Modulation

Simultaneous High-Efficiency Power Delivery and Energy-Efficient Forward Data Transmission Over Single Inductive Link

Advancements in non-invasive microwave brain stimulation: A comprehensive survey

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