A Two-Way Power Combined <italic>Ka</italic>-Band Rectifier for Low Input Power Energy Harvesting

Tal Elazar, Edoh Shaulov, Eran Socher

Research output: Contribution to journalArticlepeer-review

Abstract

In this letter, we propose an RF power combining approach for energy harvesting at <italic>Ka</italic>-band frequencies. A two-way 28-nm CMOS rectifier is presented, utilizing ultralow threshold voltage (ULVT) transistors for efficient rectification of low voltage swing input signals. The power combiner is a compact voltage summation design that minimizes the losses associated with transformer-based power combiners at mm-Wave frequencies. The rectifier achieves a record 13% power conversion efficiency (PCE) for <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>20 dBm input power per port, and peak PCE of 24% for <inline-formula> <tex-math notation="LaTeX">$-$</tex-math> </inline-formula>14 dBm input power per port.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalIEEE Microwave and Wireless Technology Letters
DOIs
StateAccepted/In press - 2024

Keywords

  • Antennas
  • Energy harvesting
  • Energy harvesting
  • Inductors
  • mm-Wave
  • Power combiners
  • power conversion efficiency (PCE)
  • Radio frequency
  • rectenna arrays
  • Rectennas
  • rectifier
  • Rectifiers

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