A Full-duplex Transceiver with Integrated Active Quasi-circulator Achieving Self-interference RF Cancellation over Wide Bandwidth

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Abstract

To improve the RF self-interference cancellation (SIC) of the full-duplex transceiver and extend the operating bandwidth, we propose an orthogonal-vector-synthesis (OVS)-based cancellation strategy, where an active quasi-circulator is integrated to shrink the system area and reduce the hardware overhead. The full-duplex transceiver is designed in a standard 180-nm CMOS process with layout size of 1.5mm \times 1.75 mm including pads. A total SIC of more than 65 dB over wide bandwidth of 82 MHz is achieved. The noise Figure (NF) is only deteriorated by 1.5 dB.

Original languageEnglish
Title of host publicationProceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages9-10
Number of pages2
ISBN (Electronic)9781728180328
DOIs
StatePublished - 23 Nov 2020
Event3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020 - Virtual, Nanjing, China
Duration: 23 Nov 202025 Nov 2020

Publication series

NameProceedings of 2020 IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020

Conference

Conference3rd IEEE International Conference on Integrated Circuits, Technologies and Applications, ICTA 2020
Country/TerritoryChina
CityVirtual, Nanjing
Period23/11/2025/11/20

Keywords

  • active quasi-circulator
  • broadband
  • full-duplex
  • low noise degradation
  • self-interference cancellation

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