A 5.2 GHz RF energy harvester system using reconfigurable parallel rectenna

Hamed Abbasizadeh; Sang Yun Kim; Truong Thi Kim Nga; Danial Khan; Seong Jin Oh; Sung Jin Kim; Kwan Tae Kim; Dong In Kim; Kang Yoon Lee

doi:10.1109/MWSCAS.2018.8623867

A 5.2 GHz RF energy harvester system using reconfigurable parallel rectenna

Hamed Abbasizadeh, Sang Yun Kim, Truong Thi Kim Nga, Danial Khan, Seong Jin Oh, Sung Jin Kim, Kwan Tae Kim, Dong In Kim, Kang Yoon Lee

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Scopus citations

Abstract

This paper presents a 5.2 GHz band, 67 % efficiency at the input power of +20 dBm RF Energy Harvester (EH) for IoT/wearable devices. In order to keep the high efficiency over the wide RF input range, the reconfigurable 6-parallel rectenna is proposed. The configuration of rectenna is automatically changed depending on the RF input power level. Also, adaptive matching is proposed to adjust the matching network automatically depending on the number of stages of rectenna, RF input frequency, and load current. Each RF-DC converter in rectenna is implemented by two Schottky diodes in a package and with a harmonic control scheme to produce a reasonable output DC voltage. Buck-boost converter is integrated to provide a constant voltage to the IoT/wearable devices. By using reconfigurable structure, different values of efficiency and the output DC voltage can be achieved. The measured efficiency of RF EH is 67 % with an output DC voltage of 6.1 V when the RF input power level is +20 dBm at the frequency of 5.2 GHz single-tone signal. It can charge the wearable devices such as G Watch, Mi band, and SmartThinQ.

Original language	English (US)
Title of host publication	Midwest Symposium on Circuits and Systems
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	436-439
Number of pages	4
ISBN (Print)	9781538673928
DOIs	https://doi.org/10.1109/MWSCAS.2018.8623867
State	Published - Jan 22 2019
Externally published	Yes

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10.1109/MWSCAS.2018.8623867

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title = "A 5.2 GHz RF energy harvester system using reconfigurable parallel rectenna",

abstract = "This paper presents a 5.2 GHz band, 67 % efficiency at the input power of +20 dBm RF Energy Harvester (EH) for IoT/wearable devices. In order to keep the high efficiency over the wide RF input range, the reconfigurable 6-parallel rectenna is proposed. The configuration of rectenna is automatically changed depending on the RF input power level. Also, adaptive matching is proposed to adjust the matching network automatically depending on the number of stages of rectenna, RF input frequency, and load current. Each RF-DC converter in rectenna is implemented by two Schottky diodes in a package and with a harmonic control scheme to produce a reasonable output DC voltage. Buck-boost converter is integrated to provide a constant voltage to the IoT/wearable devices. By using reconfigurable structure, different values of efficiency and the output DC voltage can be achieved. The measured efficiency of RF EH is 67 % with an output DC voltage of 6.1 V when the RF input power level is +20 dBm at the frequency of 5.2 GHz single-tone signal. It can charge the wearable devices such as G Watch, Mi band, and SmartThinQ.",

author = "Hamed Abbasizadeh and Kim, {Sang Yun} and Nga, {Truong Thi Kim} and Danial Khan and Oh, {Seong Jin} and Kim, {Sung Jin} and Kim, {Kwan Tae} and Kim, {Dong In} and Lee, {Kang Yoon}",

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doi = "10.1109/MWSCAS.2018.8623867",

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AU - Abbasizadeh, Hamed

AU - Kim, Sang Yun

AU - Nga, Truong Thi Kim

AU - Khan, Danial

AU - Oh, Seong Jin

AU - Kim, Sung Jin

AU - Kim, Kwan Tae

AU - Kim, Dong In

AU - Lee, Kang Yoon

N1 - Generated from Scopus record by KAUST IRTS on 2023-09-23

PY - 2019/1/22

Y1 - 2019/1/22

N2 - This paper presents a 5.2 GHz band, 67 % efficiency at the input power of +20 dBm RF Energy Harvester (EH) for IoT/wearable devices. In order to keep the high efficiency over the wide RF input range, the reconfigurable 6-parallel rectenna is proposed. The configuration of rectenna is automatically changed depending on the RF input power level. Also, adaptive matching is proposed to adjust the matching network automatically depending on the number of stages of rectenna, RF input frequency, and load current. Each RF-DC converter in rectenna is implemented by two Schottky diodes in a package and with a harmonic control scheme to produce a reasonable output DC voltage. Buck-boost converter is integrated to provide a constant voltage to the IoT/wearable devices. By using reconfigurable structure, different values of efficiency and the output DC voltage can be achieved. The measured efficiency of RF EH is 67 % with an output DC voltage of 6.1 V when the RF input power level is +20 dBm at the frequency of 5.2 GHz single-tone signal. It can charge the wearable devices such as G Watch, Mi band, and SmartThinQ.

AB - This paper presents a 5.2 GHz band, 67 % efficiency at the input power of +20 dBm RF Energy Harvester (EH) for IoT/wearable devices. In order to keep the high efficiency over the wide RF input range, the reconfigurable 6-parallel rectenna is proposed. The configuration of rectenna is automatically changed depending on the RF input power level. Also, adaptive matching is proposed to adjust the matching network automatically depending on the number of stages of rectenna, RF input frequency, and load current. Each RF-DC converter in rectenna is implemented by two Schottky diodes in a package and with a harmonic control scheme to produce a reasonable output DC voltage. Buck-boost converter is integrated to provide a constant voltage to the IoT/wearable devices. By using reconfigurable structure, different values of efficiency and the output DC voltage can be achieved. The measured efficiency of RF EH is 67 % with an output DC voltage of 6.1 V when the RF input power level is +20 dBm at the frequency of 5.2 GHz single-tone signal. It can charge the wearable devices such as G Watch, Mi band, and SmartThinQ.

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U2 - 10.1109/MWSCAS.2018.8623867

DO - 10.1109/MWSCAS.2018.8623867

M3 - Conference contribution

SN - 9781538673928

SP - 436

EP - 439

BT - Midwest Symposium on Circuits and Systems

PB - Institute of Electrical and Electronics Engineers Inc.

ER -

A 5.2 GHz RF energy harvester system using reconfigurable parallel rectenna

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