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Article

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

1
Department of Nanoscience and Engineering, Centre for Nano Manufacturing, Inje University Gimhae, Gimhae 50834, Korea
2
Department of Electronics and Communication Engineering, National Institute of Technology Karnataka, Surathkal, Mangaluru, Karnataka 575025, India
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2020, 10(18), 6154; https://doi.org/10.3390/app10186154
Received: 1 July 2020 / Revised: 31 August 2020 / Accepted: 2 September 2020 / Published: 4 September 2020
(This article belongs to the Section Nanotechnology and Applied Nanosciences)
In this paper, a conceptual investigation of the interface between wireless power devices and a retina complementary metal oxide semiconductor (CMOS) neuron integrated circuit (IC) have been presented. The proposed investigation consists of three designs: design-I, design-II, and design-III. Design-I involves a slotted loop monopole antenna as per American National Standards Institute (ANSI) guidelines, which achieve an ultra-wide band ranging from 3.1 GHz to 10.6 GHz. The biocompatible antenna is made on silicon-nitride substrate using on-wafer packaging technology and it is used as a receiver device. The performance of antenna provides a wideband, sufficient power to receive, and low losses due to the avoidance of printed circuit board (PCB) fabrication. A CMOS based multi-stack power harvesting circuit achieves the output power ranging from 4 mW to 2.7 W and corresponds from the selected Radio Frequency (RF) bands of loop antenna is exhibited in design-II. The power efficiency of 40% to 82%, with respect to output powers of 4 mW to 2.7 W, is achieved. Design-III includes a CMOS based retina neuron circuit that employs a dynamic feedback technique and support to achieve the number of read-out spikes. At the end of the interface between wireless power devices and a CMOS retina neuron IC, 50 mV read-out spikes are achieved, with varying light intensity, from 0 mW/cm2 to 2 mW/cm2. The proposed design-II and design-III are implemented and fabricated using commercial CMOS 0.065 µm, Samsung process. The antenna and RF power harvesting IC could be placed on a contact lens platform while retina neuron IC can be implanted after ganglions cells inside the eye. The antenna and harvesting IC are physically connected to the retina circuit in the form of light. This conceptual investigation could support medical professionals in achieving an interfacing approach to restore the image visualization. View Full-Text
Keywords: integrated circuit (IC); CMOS (complementary metal oxide semiconductor); image acquisition; retina neuron; wireless power devices; on-wafer antenna; RF power harvesting integrated circuit (IC); CMOS (complementary metal oxide semiconductor); image acquisition; retina neuron; wireless power devices; on-wafer antenna; RF power harvesting
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MDPI and ACS Style

Al-Shidaifat, A.; Kumar, S.; Chakrabartty, S.; Song, H. A Conceptual Investigation at the Interface between Wireless Power Devices and CMOS Neuron IC for Retinal Image Acquisition. Appl. Sci. 2020, 10, 6154. https://doi.org/10.3390/app10186154

AMA Style

Al-Shidaifat A, Kumar S, Chakrabartty S, Song H. A Conceptual Investigation at the Interface between Wireless Power Devices and CMOS Neuron IC for Retinal Image Acquisition. Applied Sciences. 2020; 10(18):6154. https://doi.org/10.3390/app10186154

Chicago/Turabian Style

Al-Shidaifat, AlaaDdin, Sandeep Kumar, Shubhro Chakrabartty, and Hanjung Song. 2020. "A Conceptual Investigation at the Interface between Wireless Power Devices and CMOS Neuron IC for Retinal Image Acquisition" Applied Sciences 10, no. 18: 6154. https://doi.org/10.3390/app10186154

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