Zobrazeno 1 - 10
of 179
pro vyhledávání: '"Reiji Hattori"'
Publikováno v:
IEEE Access, Vol 11, Pp 57806-57818 (2023)
Capacitive power transfer (CPT) is a near-field wireless power transfer (WPT) technology that has attracted attention in different charging applications. By utilizing electric fields, CPT gives charging systems advantages in terms of cost, weight, fl
Externí odkaz:
https://doaj.org/article/fc84a048ee4a4fb695b57944bcd53ba4
Publikováno v:
Computational and Experimental Research in Materials and Renewable Energy, Vol 5, Iss 2, Pp 78-91 (2022)
The pulse oximetry device has been used for decades to monitor human pulse rate and oxygen saturation. There are two types of pulse oximetry which are transmission and reflection based. However, most devices are unsuitable for daily health monitoring
Externí odkaz:
https://doaj.org/article/b5cad4f09dc247e9ae6b27089eea609e
Autor:
Aam Muharam, Tarek Mahmoud Mostafa, Suziana Ahmad, Mitsuru Masuda, Daiki Obara, Reiji Hattori, Abdul Hapid
Publikováno v:
Journal of Mechatronics, Electrical Power, and Vehicular Technology, Vol 11, Iss 1, Pp 22-29 (2020)
A preliminary study of Class-E radio frequency power amplifier for wireless capacitive power transfer (CPT) system is presented in this paper. Due to a limitation in coupling capacitance value, a high frequency operation of switching power inverter i
Externí odkaz:
https://doaj.org/article/8e4e3a5ce91d499aab26be3765166da7
Publikováno v:
Energies, Vol 14, Iss 15, p 4590 (2021)
In this study, we propose a four-plate structure with two shielding plates to produce shielded capacitive power transfer (S-CPT) at an operating frequency of 6.78 MHz for a 10 W system. By eliminating the inductors at the secondary side to form an as
Externí odkaz:
https://doaj.org/article/4d5b6103f59143d183ba915a0598fa55
Publikováno v:
Nanomaterials, Vol 11, Iss 6, p 1547 (2021)
The temperature dependence thermal conductivity of the indium-gallium-zinc oxide (IGZO) thin films was investigated with the differential three-omega method for the clear demonstration of nanocrystallinity. The thin films were deposited on an alumina
Externí odkaz:
https://doaj.org/article/5fa5f9e2c57c49859c657d293c655a9a
Publikováno v:
Energies, Vol 14, Iss 10, p 2826 (2021)
A capacitive power transfer (CPT) system wirelessly transfers energy between coupling plates and performance issues related to CPT systems are resonance conditions, matching impedance, voltage stress, and power loss. A generalized circuit model is pr
Externí odkaz:
https://doaj.org/article/b32196b7e6894e7db852da576f924be5
Publikováno v:
Energies, Vol 13, Iss 16, p 4240 (2020)
This paper introduces scaling-factor and design guidelines for shielded-capacitive power transfer (shielded-CPT) systems, offering a simplified design process, coupling-structure optimization, and consideration of safety. A novel scaling-factor-analy
Externí odkaz:
https://doaj.org/article/288e198a4c6a4f4ea73c27a65f476b55
Autor:
Fahed Elsamnah, Anubha Bilgaiyan, Muhamad Affiq, Chang-Hoon Shim, Hiroshi Ishidai, Reiji Hattori
Publikováno v:
Biosensors, Vol 9, Iss 3, p 87 (2019)
This paper compares the structural design of two organic biosensors that minimize power consumption in wireless photoplethysmogram (PPG) waveform monitoring. Both devices were fabricated on the same substrate with a red organic light-emitting diode (
Externí odkaz:
https://doaj.org/article/74cbbbada3d14326943fd7a400120317
Autor:
Fahed Elsamnah, Anubha Bilgaiyan, Muhamad Affiq, Chang-Hoon Shim, Hiroshi Ishidai, Reiji Hattori
Publikováno v:
Biosensors, Vol 9, Iss 2, p 48 (2019)
This paper demonstrated a new design structure for minimizing the power consumption of a pulse meter. Monolithic devices composed of a red (625 nm) organic light-emitting diode (OLED) and an organic photodiode (OPD) were fabricated on the same substr
Externí odkaz:
https://doaj.org/article/2863774e895441da8efd20e5675293c4
Publikováno v:
Applied Sciences, Vol 8, Iss 7, p 1131 (2018)
This paper introduces a DC–DC buck converter on the secondary side of the capacitive power transfer system to reduce the voltage and electric field across the interface, and to reduce the circuit Q, and thus the system sensitivity. The system is ma
Externí odkaz:
https://doaj.org/article/d13c69a964944ab3875f483940e374da