Harmonic Reflection Detection from 915-MHz SDR- Based RF Energy Harvesting Prototype System

Dong Yan Li, Yi Yuan Lin, Tzuen Hsi Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper the reflection detection of second harmonic from a 915-MHz radio-frequency (RF) energy harvesting prototype system is demonstrated. The prototype system contains an RF power emitter and a power receiver. The power receiver is composed of a rectenna and a commercial power management demoboard. The power emitter includes two commercial software-defined radio (SDR) transceivers to act as a RF power radiator and a harmonic detector for energy harvesting and harmonic reflection detection, respectively. From the experimental results, the transmission power of about +18 dBm are delivered to the rectenna to start up the power management demo board to hunting electrical energy at a distance of 50 cm. By directly reading the measured harmonic power strength with a SDR tool, a detectable harmonic power level difference can be observed. The difference over 10 dB can be obtained. Thus, it can be used as an index signal to identify the directional position of the power receiver.

Original languageEnglish
Title of host publication2020 IEEE Wireless Power Transfer Conference, WPTC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages106-108
Number of pages3
ISBN (Electronic)9781728142388
DOIs
Publication statusPublished - 2020 Nov 15
Event2020 IEEE Wireless Power Transfer Conference, WPTC 2020 - Seoul, Korea, Republic of
Duration: 2020 Nov 152020 Nov 19

Publication series

Name2020 IEEE Wireless Power Transfer Conference, WPTC 2020

Conference

Conference2020 IEEE Wireless Power Transfer Conference, WPTC 2020
Country/TerritoryKorea, Republic of
CitySeoul
Period20-11-1520-11-19

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Radiation

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