A 1.5-3 GHz Quadrature Balanced Switched-Capacitor CMOS Transmitter for Full Duplex and Half Duplex Wireless Systems

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

Abstract

This work proposes a reconfigurable multi-mode digital transmitter based on quadrature balanced switched-capacitor power amplifiers (QB-SCPA), supporting both full duplex (FD) and half duplex (HD) operation. The QB-SCPA architecture provides built-in passive transmit-receive isolation along with an embedded and wideband self-interference cancellation (SIC) signal injection mechanism. In addition, it allows for phase noise suppression at the RX through clock sharing and exhibits excellent TX and RX linearity. In FD mode, we demonstrate >72 dB of total TX-RX isolation over a BW larger than 1 GHz at 21 dBm peak TX power with 17.4% system PAE. In HDTX mode, the system achieves 23 dBm peak TX power with 26.5% PAE.

Original languageEnglish
Title of host publicationRFIC 2020 - 2020 IEEE Radio Frequency Integrated Circuits Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages111-114
Number of pages4
ISBN (Electronic)9781728168098
DOIs
StatePublished - Aug 2020
Event2020 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2020 - Virtual, Los Angeles, United States
Duration: 4 Aug 20206 Aug 2020

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2020-August

Conference

Conference2020 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2020
Country/TerritoryUnited States
CityVirtual, Los Angeles
Period4/08/206/08/20

Keywords

  • Full duplex
  • Half Duplex
  • Quadrature Balanced
  • Quadrature Hybrid
  • Self-Interference Cancellation
  • Switched Capacitors Power Amplifier

All Science Journal Classification (ASJC) codes

  • General Engineering

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