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A highly integrated CMOS direct digital RF quadrature modulator

Författare:
Publiceringsår: 2003
Språk: Engelska
Sidor: 573-576
Publikation/Tidskrift/Serie: ESSCIRC 2004 - 29th European Solid-State Circuits Conference
Dokumenttyp: Konferensbidrag
Förlag: IEEE

Sammanfattning

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

Disputation

Nyckelord

  • Technology and Engineering
  • 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

Övriga

ESSCIRC 2004 - 29th European Solid-State Circuits Conference
2003-09-16/2003-09-18
Estoril, Portugal
Published
Yes
  • ISBN: 0-7803-7995-0

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