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

Gustavo C. Martins, Wouter A. Serdijn

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

13 Citations (Scopus)
82 Downloads (Pure)


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
Number of pages5
ISBN (Electronic)978-1-5386-4881-0
ISBN (Print)978-1-5386-4882-7
Publication statusPublished - 2018
EventISCAS 2018: IEEE International Symposium on Circuits and Systems - Florence, Italy
Duration: 27 May 201830 May 2018


ConferenceISCAS 2018
Abbreviated titleISCAS 2018
Internet address

Bibliographical note

Accepted author manuscript


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


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