Spectrally Efficient 4-PAM Ambient FM Backscattering for Wireless Sensing and RFID Applications

Spyridion-Nektarios Daskalakis, Ricardo Correia, George Goussetis, Manos M. Tentzeris, Nuno Borges Carvalho, Apostolos Georgiadis

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

10 Citations (Scopus)
61 Downloads (Pure)


Ahstract- This work presents a novel wireless tag operating solely with ambient backscatter signals while featuring high-order modulation capabilities. Specifically, the proposed tag communicates with a low-cost software defined radio reader using backscatter radio principles on ambient commercial FM station signals, while sensing information from sensors can be modulated on the analog signals using 4-pulse amplitude modulation (4-PAM). The tag transceiver implementation is based on an ultra-low-power microcontroller for data processing and an RF frontend for wireless communication. A proof-of-concept prototype was demonstrated indoors over a 2 m tag-reader distance for a low bit rate of 328 bps with a Power consumotion under 20 μA.

Original languageEnglish
Title of host publication2018 IEEE/MTT-S International Microwave Symposium - IMS
Number of pages4
ISBN (Print)9781538650677
Publication statusPublished - 20 Aug 2018
Event2018 IEEE/MTT-S International Microwave Symposium - Philadelphia, United States
Duration: 10 Jun 201815 Jun 2018

Publication series

NameIEEE/MTT-S International Microwave Symposium
ISSN (Print)2576-7216


Conference2018 IEEE/MTT-S International Microwave Symposium
Abbreviated titleIMS 2018
Country/TerritoryUnited States


  • Ambient backscattering
  • backscatter communication
  • high order modulation
  • Internet of Things (ioT)
  • radio frequency (RF) identification (RFID) sensors

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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