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

Sang Yun Kim, Hamed Abbasizadeh, Behnam Samadpoor Rikan, Seong Jin Oh, Byeong Gi Jang, Young Jun Park, Danial Khan, Truong Thi Kim Nga, Kyung Tae Kang, Young Gun Pu, Sang Sun Yoo, Sungho Lee, Sung Chul Lee, Minjae Lee, Keum Cheol Hwang, Youngoo Yang, Kang Yoon Lee

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

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-CMOS-double-diffused metal-oxide-semiconductor process. 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.
Original languageEnglish (US)
Pages (from-to)6803-6817
Number of pages15
JournalIEEE Transactions on Power Electronics
Volume34
Issue number7
DOIs
StatePublished - Jul 1 2019
Externally publishedYes

Bibliographical note

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

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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