A highly integrated CMOS direct digital RF quadrature modulator

Zhou Yijun, Jiren Yuan

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

A highly integrated CMOS direct digital RF quadrature modulator, consisting of two 10-bit linear interpolation current steering digital-to-analog converters (DACs) and two Gilbert cell based mixers, is described. By employing linear interpolation, the attenuation of the DAC's image components is significantly increased, and the reconstruction filter is therefore eliminated. The DAC's differential current signals are directly sent to the mixer, which improves the linearity of the modulated RF signal. Measurement results on operations of 16 QAM and GSM are presented. This structure is suitable for system-on-chip (SOC) design
Original languageEnglish
Title of host publicationESSCIRC 2004 - 29th European Solid-State Circuits Conference
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages573-576
ISBN (Print)0-7803-7995-0
DOIs
Publication statusPublished - 2003
EventESSCIRC 2004 - 29th European Solid-State Circuits Conference - Estoril, Portugal
Duration: 2003 Sept 162003 Sept 18

Conference

ConferenceESSCIRC 2004 - 29th European Solid-State Circuits Conference
Country/TerritoryPortugal
CityEstoril
Period2003/09/162003/09/18

Subject classification (UKÄ)

  • Electrical Engineering, Electronic Engineering, Information Engineering

Free keywords

  • direct digital RF quadrature modulator
  • modulated RF signal
  • SOC design
  • differential current signals
  • reconstruction filter
  • Gilbert cell based mixers
  • linear interpolation
  • CMOS
  • digital-to-analog converters

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