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
Este artigo analisa os problemas subjacentes de captação de energia de RF em níveis de potência ambiente de entrada abaixo de 0 dBm, onde a degradação da eficiência é severa. O projeto proposto visa melhorar a sensibilidade da retena, a eficiência e a potência CC de saída. Da mesma maneira, estamos usando um design de retena simples e de tamanho compacto. A antena receptora é uma antena monopolo de slot de guia de onda coplanar (CPW) com propriedade de supressão de harmônicos e um ganho de pico medido de 3 dBi. Além disso, são observadas características melhoradas de radiação da antena, por exemplo, padrão de radiação e ganho cobrindo a banda operacional desejada (ISM 2.45 GHz). O retificador é um circuito duplicador de tensão baseado na estrutura microstrip (MS). Duas arquiteturas de retena foram cuidadosamente projetadas, fabricadas e testadas. O primeiro layout; antena e retificador foram fabricados separadamente e depois conectados por meio de um conector. A eficiência máxima (40% a -5 dBm) alcançada é inferior ao esperado. Para melhorar a eficiência, uma alta compacidade e integração simples entre antena e retificador são alcançadas usando uma transição suave de CPW-MS. Este projeto mostra resultados de medição de eficiência de conversão aprimorados que normalmente concordam com os resultados da simulação. A eficiência de conversão de pico medida é de 72% no nível de potência de RF de -7 dBm e uma resistência de carga de 2 kΩ.
Mohamed M. MANSOUR
Electronics Research Institute, Microelectronics Department,Kyushu University
Haruichi KANAYA
Kyushu University
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Mohamed M. MANSOUR, Haruichi KANAYA, "Efficiency-Enhancement of 2.45-GHz Energy Harvesting Circuit Using Integrated CPW-MS Structure at Low RF Input Power" in IEICE TRANSACTIONS on Electronics,
vol. E102-C, no. 5, pp. 399-407, May 2019, doi: 10.1587/transele.2018ECP5065.
Abstract: This paper looks into the underlying RF energy harvesting issues at low input ambient power levels below 0 dBm where efficiency degradation is severe. The proposed design aims to improve the rectenna sensitivity, efficiency, and output DC power. In the same manner, we are using a straightforward and compact size rectenna design. The receiving antenna is a coplanar waveguide (CPW) slot monopole antenna with harmonic suppression property and a peak measured gain of 3 dBi. Also, an improved antenna radiation characteristics, e.g radiation pattern and gain covering the desired operating band (ISM 2.45 GHz), is observed. The rectifier is a voltage doubler circuit based on microstrip (MS) structure. Two architectures of rectenna were carefully designed, fabricated and tested. The first layout; antenna, and rectifier were fabricated separately and then connected using a connector. The peak efficiency (40% at -5 dBm) achieved is lower than expected. To improve the efficiency, a high compactness and simple integration between antenna and rectifier are achieved by using a smooth CPW-MS transition. This design shows improved conversion efficiency measurement results which typically agree with the simulation results. The measured peak conversion efficiency is 72% at RF power level of -7 dBm and a load resistance of 2 kΩ.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2018ECP5065/_p
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@ARTICLE{e102-c_5_399,
author={Mohamed M. MANSOUR, Haruichi KANAYA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Efficiency-Enhancement of 2.45-GHz Energy Harvesting Circuit Using Integrated CPW-MS Structure at Low RF Input Power},
year={2019},
volume={E102-C},
number={5},
pages={399-407},
abstract={This paper looks into the underlying RF energy harvesting issues at low input ambient power levels below 0 dBm where efficiency degradation is severe. The proposed design aims to improve the rectenna sensitivity, efficiency, and output DC power. In the same manner, we are using a straightforward and compact size rectenna design. The receiving antenna is a coplanar waveguide (CPW) slot monopole antenna with harmonic suppression property and a peak measured gain of 3 dBi. Also, an improved antenna radiation characteristics, e.g radiation pattern and gain covering the desired operating band (ISM 2.45 GHz), is observed. The rectifier is a voltage doubler circuit based on microstrip (MS) structure. Two architectures of rectenna were carefully designed, fabricated and tested. The first layout; antenna, and rectifier were fabricated separately and then connected using a connector. The peak efficiency (40% at -5 dBm) achieved is lower than expected. To improve the efficiency, a high compactness and simple integration between antenna and rectifier are achieved by using a smooth CPW-MS transition. This design shows improved conversion efficiency measurement results which typically agree with the simulation results. The measured peak conversion efficiency is 72% at RF power level of -7 dBm and a load resistance of 2 kΩ.},
keywords={},
doi={10.1587/transele.2018ECP5065},
ISSN={1745-1353},
month={May},}
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TY - JOUR
TI - Efficiency-Enhancement of 2.45-GHz Energy Harvesting Circuit Using Integrated CPW-MS Structure at Low RF Input Power
T2 - IEICE TRANSACTIONS on Electronics
SP - 399
EP - 407
AU - Mohamed M. MANSOUR
AU - Haruichi KANAYA
PY - 2019
DO - 10.1587/transele.2018ECP5065
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E102-C
IS - 5
JA - IEICE TRANSACTIONS on Electronics
Y1 - May 2019
AB - This paper looks into the underlying RF energy harvesting issues at low input ambient power levels below 0 dBm where efficiency degradation is severe. The proposed design aims to improve the rectenna sensitivity, efficiency, and output DC power. In the same manner, we are using a straightforward and compact size rectenna design. The receiving antenna is a coplanar waveguide (CPW) slot monopole antenna with harmonic suppression property and a peak measured gain of 3 dBi. Also, an improved antenna radiation characteristics, e.g radiation pattern and gain covering the desired operating band (ISM 2.45 GHz), is observed. The rectifier is a voltage doubler circuit based on microstrip (MS) structure. Two architectures of rectenna were carefully designed, fabricated and tested. The first layout; antenna, and rectifier were fabricated separately and then connected using a connector. The peak efficiency (40% at -5 dBm) achieved is lower than expected. To improve the efficiency, a high compactness and simple integration between antenna and rectifier are achieved by using a smooth CPW-MS transition. This design shows improved conversion efficiency measurement results which typically agree with the simulation results. The measured peak conversion efficiency is 72% at RF power level of -7 dBm and a load resistance of 2 kΩ.
ER -