The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Foi desenvolvido um circuito retificador CMOS de alta eficiência para aplicações RFID UHF. O retificador utiliza um esquema de cancelamento auto-Vth (SVC) no qual a tensão limite dos MOSFETs é cancelada pela aplicação de tensão de polarização de porta gerada a partir da tensão de saída do próprio retificador. Uma configuração de circuito muito simples e características de dissipação de energia zero na polarização permitem excelente eficiência de conversão de energia (PCE), especialmente sob condições de pequena potência de entrada de RF. Em condições de potência de entrada de RF mais altas, o PCE do retificador diminui automaticamente. Esta é a função de auto-regulação de energia integrada. O retificador SVC CMOS proposto foi fabricado com um processo CMOS de 0.35 µm e o desempenho medido foi comparado com aqueles de retificadores convencionais nMOS, pMOS e CMOS e também outros tipos de retificadores de cancelamento Vth. O retificador SVC CMOS atinge 32% de PCE na condição de potência de entrada de RF de -10 dBm. Este PCE é maior do que os retificadores relatados até o momento sob esta condição.
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Koji KOTANI, Takashi ITO, "Self-Vth-Cancellation High-Efficiency CMOS Rectifier Circuit for UHF RFIDs" in IEICE TRANSACTIONS on Electronics,
vol. E92-C, no. 1, pp. 153-160, January 2009, doi: 10.1587/transele.E92.C.153.
Abstract: A high-efficiency CMOS rectifier circuit for UHF RFID applications was developed. The rectifier utilizes a self-Vth-cancellation (SVC) scheme in which the threshold voltage of MOSFETs is cancelled by applying gate bias voltage generated from the output voltage of the rectifier itself. A very simple circuit configuration and zero power dissipation characteristics in biasing enable excellent power conversion efficiency (PCE), especially under small RF input power conditions. At higher RF input power conditions, the PCE of the rectifier automatically decreases. This is the built-in self-power-regulation function. The proposed SVC CMOS rectifier was fabricated with a 0.35-µm CMOS process and the measured performance was compared with those of conventional nMOS, pMOS, and CMOS rectifiers and other types of Vth cancellation rectifiers as well. The SVC CMOS rectifier achieves 32% of PCE at the -10 dBm RF input power condition. This PCE is larger than rectifiers reported to date under this condition.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E92.C.153/_p
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@ARTICLE{e92-c_1_153,
author={Koji KOTANI, Takashi ITO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Self-Vth-Cancellation High-Efficiency CMOS Rectifier Circuit for UHF RFIDs},
year={2009},
volume={E92-C},
number={1},
pages={153-160},
abstract={A high-efficiency CMOS rectifier circuit for UHF RFID applications was developed. The rectifier utilizes a self-Vth-cancellation (SVC) scheme in which the threshold voltage of MOSFETs is cancelled by applying gate bias voltage generated from the output voltage of the rectifier itself. A very simple circuit configuration and zero power dissipation characteristics in biasing enable excellent power conversion efficiency (PCE), especially under small RF input power conditions. At higher RF input power conditions, the PCE of the rectifier automatically decreases. This is the built-in self-power-regulation function. The proposed SVC CMOS rectifier was fabricated with a 0.35-µm CMOS process and the measured performance was compared with those of conventional nMOS, pMOS, and CMOS rectifiers and other types of Vth cancellation rectifiers as well. The SVC CMOS rectifier achieves 32% of PCE at the -10 dBm RF input power condition. This PCE is larger than rectifiers reported to date under this condition.},
keywords={},
doi={10.1587/transele.E92.C.153},
ISSN={1745-1353},
month={January},}
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TY - JOUR
TI - Self-Vth-Cancellation High-Efficiency CMOS Rectifier Circuit for UHF RFIDs
T2 - IEICE TRANSACTIONS on Electronics
SP - 153
EP - 160
AU - Koji KOTANI
AU - Takashi ITO
PY - 2009
DO - 10.1587/transele.E92.C.153
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E92-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2009
AB - A high-efficiency CMOS rectifier circuit for UHF RFID applications was developed. The rectifier utilizes a self-Vth-cancellation (SVC) scheme in which the threshold voltage of MOSFETs is cancelled by applying gate bias voltage generated from the output voltage of the rectifier itself. A very simple circuit configuration and zero power dissipation characteristics in biasing enable excellent power conversion efficiency (PCE), especially under small RF input power conditions. At higher RF input power conditions, the PCE of the rectifier automatically decreases. This is the built-in self-power-regulation function. The proposed SVC CMOS rectifier was fabricated with a 0.35-µm CMOS process and the measured performance was compared with those of conventional nMOS, pMOS, and CMOS rectifiers and other types of Vth cancellation rectifiers as well. The SVC CMOS rectifier achieves 32% of PCE at the -10 dBm RF input power condition. This PCE is larger than rectifiers reported to date under this condition.
ER -