A 5GHz to 6GHz CMOS transmitter for full-duplex wireless with wideband digital 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 transmitter, assisted by a digital equalization and predistortion self-interference cancellation technique for Full-Duplex wireless applications. An analysis of design trade-offs between low receiver (Rx) loss and high transmitter (Tx) efficiency is laid out and demonstrated on a 5GHz to 6GHz class AB power amplifier implemented in 180nm CMOS. Wideband cancellation of >48dB and >57dB at 20dBm and 10dBm Tx output power, respectively, is measured in CW. Cancellation of >30dB for an actual 160MHz 802.11ac OFDM packet around a carrier frequency of 5.2GHz together with EVM of-33dB is demonstrated. Measured Tx power added efficiency (PAE) for concurrent Tx-SIC operation is 35% and 6.4% at peak and RMS (10dB backoff) power, respectively. Rx loss is lower than 1.6dB at RMS Tx power within the signal frequency band.

Original languageEnglish
Title of host publication2019 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages87-90
Number of pages4
ISBN (Electronic)9781728117010
DOIs
StatePublished - Jun 2019
Externally publishedYes
Event2019 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2019 - Boston, United States
Duration: 2 Jun 20194 Jun 2019

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2019-June
ISSN (Print)1529-2517

Conference

Conference2019 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2019
Country/TerritoryUnited States
CityBoston
Period2/06/194/06/19

Keywords

  • full-duplex
  • output impedance
  • power amplifier
  • self-interference cancellation

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