A Quadrature Balanced Multi-Mode RF Front-End Architecture with Wideband Ultra Low Power Self Interference Cancellation

Nimrod Ginzberg, Dror Regev, Genadiy Tsodik, Shimi Shilo, Doron Ezri, Emanuel Cohen

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

Abstract

This paper presents a quadrature balanced RF Front-End architecture with a built-in primary isolation for a single antenna Full Duplex and Time Division Duplex wireless communications. Self-interference cancellation is implemented by injecting a digitally synthesized cancellation signal into a dedicated input port that enables wideband cancellation of the leaking transmit signal at the receiver. A closed form analytical expression of the cancellation signal as a function of the channel frequency response is derived, together with a nonlinear analysis that predicts distortion fundamentals at both transmit and receive channels. Simulations at the 5-6GHz Wi-Fi band verify the theoretical results and demonstrate leakage cancellation better than 60dB for 160MHz and 320MHz channels for linear and nonlinear operation conditions.

Original languageEnglish
Title of host publicationProceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728118031
DOIs
StatePublished - Mar 2019
Externally publishedYes
Event2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019 - Waco, United States
Duration: 28 Mar 201929 Mar 2019

Publication series

NameProceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019

Conference

Conference2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019
Country/TerritoryUnited States
CityWaco
Period28/03/1929/03/19

Keywords

  • Full-Duplex
  • Half-Duplex Quadrature Balanced
  • self-interference cancellation
  • simultaneous transmit-receive

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