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 Home > Achievement > Main Contributions > SCI > A -20 to 30 dBm Input Power Range Wireless Power System With a MPPT-Based Reconfigurable 48% Efficient RF Energy Harvester and 82% Efficient A4WP Wireless Power Receiver With Open-Loop Delay Compensation

Domestic/International 국외  Principal Author Keum Cheol Hwang, Youngoo Yang, Kang-Yoon Lee 
Title A -20 to 30 dBm Input Power Range Wireless Power System With a MPPT-Based Reconfigurable 48% Efficient RF Energy Harvester and 82% Efficient A4WP Wireless Power Receiver With Open-Loop Delay Compensation 
Journal IEEE Transactions on Power Electronics (Impact Factor : 6.373 ; JCR 상위 5%) 
Authors Sang-Yun Kim, Hamed Abbasizadeh, Behnam Samadpoor Rikan, Seong Jin Oh,ByeongGi Jang, Young-Jun Park, Danial Khan, Truong Thi Kim Nga, KyungTaeKang, YoungGun Pu, Sang-Sun Yoo, SungHo Lee, Sung-Chul Lee, Minjae Lee 
Date 2019년 7월 Page 6803 - 6817 
Volume 34   Number 7 

This paper presents a reconfigurable wide input power range radio frequency (RF) energy harvester (EH) with alliance for wireless power (A4WP) wireless power receiver (WPR). A reconfigurable RF-DC converter for RF EH and maximum power point tracking algorithm are proposed to maintain high efficiency over a wide input power range –20 to +20 dBm. The A4WP WPR is designed and merged with the EH to receive power higher than +20 dBm. In order to improve the power conversion efficiency (PCE), the delay between the ac input voltage and current is compensated by the proposed open-loop delay compensation method. The chip is implemented in 0.18 µm bipolar-CMOSdouble-diffused metal-oxide-semiconductor process (DMOS). The die area of the chip is 4.3 mm × 3.2 mm, including the pads. The proposed EH with WPR achieves a measured peak PCE of 48.19% with respect to the input power of 0 dBm at 900 MHz. It also has a peak PCE of 82.14% with respect to the input power of 30 dBm in an A4WP mode operation at 6.78 MHz.

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