A 0.18μm CMOS fully integrated RFDAC and VGA for WCDMA transmitters

Shahin Mehdizad Taleie, Han Yongping, Tino Copani, Bertan Bakkaloglu, Sayfe Kiaei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

A digital IF to RF converter architecture with an RF VGA targeted for WCDMA transmitters is presented. The RFDAC consists of a 1.5-bits current steering DAC with an embedded semi-digital FIR filter and a mixer with an LC load. The VGA controls the output power in 10dB steps. The prototype is fabricated in 0.18μm CMOS technology and achieves 0dBm output power at 2GHz and 33dB image rejection. The measured rms EVM and ACPR show the system fulfills the standard specifications for the WCDMA. The chip draws 123.9mA from 1.8V supply. The die area is 0.8 × 1.6 mm2.

Original languageEnglish (US)
Title of host publicationDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Pages157-160
Number of pages4
DOIs
Publication statusPublished - 2008
Event2008 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2008 - Atlanta, GA, United States
Duration: Jun 15 2008Jun 17 2008

Other

Other2008 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2008
CountryUnited States
CityAtlanta, GA
Period6/15/086/17/08

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Keywords

  • CMOS
  • Digital to analog converters
  • Linearity
  • Transmitter
  • VGA
  • WCDMA

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Taleie, S. M., Yongping, H., Copani, T., Bakkaloglu, B., & Kiaei, S. (2008). A 0.18μm CMOS fully integrated RFDAC and VGA for WCDMA transmitters. In Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium (pp. 157-160). [4561408] https://doi.org/10.1109/RFIC.2008.4561408