Ambient Backscattering Transponder with Independently Switchable Rx and Tx Antennas

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This article presents an ambient backscattering transponder with independently beam-switchable receive and transmit antennas. The independently switchable antennas make it possible to collect ambient waves from the direction where they are the strongest and further modulate and redirect the waves toward the receiver possible in a direction other than the ambient source. The transponder consists of patch antennas, circulators, low-power RF switches, and a diode-based modulator
Original languageEnglish
Article number3500704
Number of pages4
JournalIEEE Sensors Letters
Issue number5
Early online date2019
Publication statusPublished - 1 May 2019
MoE publication typeA1 Journal article-refereed


  • Transponders
  • Antenna measurements
  • Radio frequency
  • Backscatter
  • Receiving antennas
  • Loss measurement
  • Modulation
  • Ambient backscatter
  • beam steering
  • internet-of-things (IoT)
  • modulation
  • radio frequency identification (RFID)
  • wireless sensor network (WSN)


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