An RF Energy Harvester with MPPT Operating Across a Wide Range of Available Input Power

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21 Downloads (Pure)

Abstract

In this paper we present the design and simulation results of an RF energy harvesting circuit that operates across a wide range of available input power, from -27 dBm to 6 dBm. The system comprises an adaptive impedance matching network, a single-stage cross-connected differential rectifier, a start-up charge pump, an adaptive buck-boost converter and a Maximum Power Point Tracking (MPPT) circuit. The MPPT circuit controls the switching frequency of the buck-boost converter and configures the impedance matching network, optimizing the interfaces between the rectifier and antenna and between the rectifier and the storage capacitor, thereby guaranteeing that maximum power is being harvested. The system is designed in a standard 0.18 pm CMOS technology. The peak efficiency is 49.1% at an available input power of -18 dBm and signal frequency of 403.5 MHz.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
Subtitle of host publicationProceedings
Place of PublicationPiscataway, NJ
PublisherIEEE
Pages1-5
Number of pages5
Volume2018-May
ISBN (Electronic)978-1-5386-4881-0
ISBN (Print)978-1-5386-4882-7
DOIs
Publication statusPublished - 2018
EventISCAS 2018: IEEE International Symposium on Circuits and Systems - Florence, Italy
Duration: 27 May 201830 May 2018
http://www.iscas2018.org

Conference

ConferenceISCAS 2018
Abbreviated titleISCAS 2018
CountryItaly
CityFlorence
Period27/05/1830/05/18
Internet address

Keywords

  • Maximum power point trackers
  • Impedance
  • Impedance matching
  • Antennas
  • Radio frequency
  • Simulation
  • Pins

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