Reflection investigation of modified greinacher charge pump using frequency doubler for an elegant full-duplex WPT system

Hao Zhang, Si Ping Gao, Jian Wang, Zheng Zhong, Wen Wu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The power reflection from a 90q hybrid coupler based modified Greinacher (MG) charge pump is investigated by using a frequency doubler, which provides a potential for an elegant full-duplex wireless power transfer (WPT) system. The hybrid coupler is employed as an equal power divider to evenly distribute the RF signal captured by the receiving (RX) antenna for the successive cascaded charge pump, and couple the power reflection from the charge pump's mismatch simultaneously. The frequency doubler absorbs the portion reflection and converts it to second-harmonic frequency, which could drive another transmitting (TX) antenna to enable the second-harmonic feedbacks. The measurement result shows that the second-harmonic generation of -27 dBm is ensured with input power of 4 dBm, which is sufficient for the link budget to realize simultaneous wireless power and information transfer.

Original languageEnglish
Title of host publication2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1414-1416
Number of pages3
ISBN (Electronic)9784902339451
DOIs
StatePublished - 2 Jul 2018
Externally publishedYes
Event30th Asia-Pacific Microwave Conference, APMC 2018 - Kyoto, Japan
Duration: 6 Nov 20189 Nov 2018

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2018-November

Conference

Conference30th Asia-Pacific Microwave Conference, APMC 2018
Country/TerritoryJapan
CityKyoto
Period6/11/189/11/18

Keywords

  • Frequency doubler
  • Full-duplex
  • Hybrid coupler
  • Modified Greinacher (MG) charge pump
  • Wireless power transfer (WPT)

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