A Conceptual Investigation at the Interface between Wireless Power Devices and CMOS Neuron IC for Retinal Image Acquisition

Al-Shidaifat, AlaaDdin; Kumar, Sandeep; Chakrabartty, Shubhro; Song, Hanjung

doi:10.3390/app10186154

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Numerous antennas for wireless communication have been reported to be fabricated using textile materials [83,90]. Some studies have combined a textile antenna with a rectifier circuit built on a printed circuit board (PCB) to create a wearable device for power harvesting [67].…”

Section: Rf Textile-based Wearable Energy Harvestermentioning

confidence: 99%

Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Nwalike,

Ibrahim,

Crawley

et al. 2023

Energies

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Wireless energy harvesting enables the conversion of ambient energy into electrical power for small wireless electronic devices. This technology offers numerous advantages, including availability, ease of implementation, wireless functionality, and cost-effectiveness. Radio frequency energy harvesting (RFEH) is a specific type of wireless energy harvesting that enables wireless power transfer by utilizing RF signals. RFEH holds immense potential for extending the lifespan of wireless sensors and wearable electronics that require low-power operation. However, despite significant advancements in RFEH technology for self-sustainable wearable devices, numerous challenges persist. This literature review focuses on three key areas: materials, antenna design, and power management, to delve into the research challenges of RFEH comprehensively. By providing an up-to-date review of research findings on RFEH, this review aims to shed light on the critical challenges, potential opportunities, and existing limitations. Moreover, it emphasizes the importance of further research and development in RFEH to advance its state-of-the-art and offer a vision for future trends in this technology.

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Section: Rf Textile-based Wearable Energy Harvestermentioning

confidence: 99%

Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Nwalike,

Ibrahim,

Crawley

et al. 2023

Energies

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Ultra-Efficient Low-Power Retinal Nano Electronic Circuit for Edge Enhancement and Detection Using 7 nm FinFET Technology

Turiqul Islam,

Al-Shidaifat,

Jooq

et al. 2024

Journal of Nanoelectronics and Optoelectronics

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This study proposed a 7 nm FinFET based analog one pixel circuit block inspired by lateral inhibition phenomenon to perform edge enhancing and edge detection of optoelectronic image. This plays a crucial role in retinomorphic applications like artificial human retinal functions. Proposed Edge enhancement and edge detection circuits are constructed using two distinct 750×750-pixel silicon networks. First the single pixel circuit cell is reconstructed with the lateral inhibition phenomenon, then the circuit using GPDK (Generic Process Design Kit) in 180 nm, 90 nm, and 45 nm CMOS technology is designed. We used 3×3 convolution process for image masking in digital and analog image signal processing which gives more accuracy in term of object recognition. The power consumption in each case is obtained to be approximately 19.71 μW, 4.18 μW and 1.62 μW for edge enhancing and 23.76 μW, 7.99 μW and 3.41 μW for edge detection which is much larger than the power consumed by the same circuit is implemented with 7 nm FinFET (Fin Field Effect Transistor) technology, 21.91 pW and 24.85 pW. In addition, the size reduction of the circuit reduced by 84% compared with 45 nm CMOS, increases the accuracy of the circuit by 30%. Results confirm that FinFET based single pixel circuit consumes less power, reduces size, and gives higher accuracy. The output from all the circuits has been matched with the biological response.

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Modeling and Measurement of an Ultrasound Power Delivery System for Charging Implantable Devices Using an AlN-Based pMUT as Receiver

et al. 2022

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Ultrasound power delivery can be considered a convenient technique for charging implantable medical devices. In this work, an intra-body system has been modeled to characterize the phenomenon of ultrasound power transmission. The proposed system comprises a Langevin transducer as transmitter and an AlN-based square piezoelectric micro-machined ultrasonic transducer as receiver. The medium layers, in which elastic waves propagate, were made by polydimethylsiloxane to mimic human tissue and stainless steel to replace the case of the implantable device. To characterize the behavior of the transducers, measurements of impedance and phase, velocity and displacement, and acoustic pressure field were carried out in the experimental activity. Then, voltage and power output were measured to analyze the performance of the ultrasound power delivery system. For a root mean square voltage input of approximately 35 V, the power density resulted in 21.6 µW cm−2. Such a result corresponds to the data obtained with simulation through a one-dimensional lumped parameter transmission line model. The methodology proposed to develop the ultrasound power delivery (UPD) system, as well as the use of non-toxic materials for the fabrication of the intra-body elements, are a valid design approach to raise awareness of using wireless power transfer techniques for charging implantable devices.

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A Conceptual Investigation at the Interface between Wireless Power Devices and CMOS Neuron IC for Retinal Image Acquisition

Cited by 3 publications

References 24 publications

Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Ultra-Efficient Low-Power Retinal Nano Electronic Circuit for Edge Enhancement and Detection Using 7 nm FinFET Technology

Modeling and Measurement of an Ultrasound Power Delivery System for Charging Implantable Devices Using an AlN-Based pMUT as Receiver

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