RF-DAC challenges for mm-Wave transmitter in CMOS process

Tomer Ben-Oz, Emanuel Cohen, Eran Socher

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

1 Scopus citations

Abstract

This paper presents a part of the digital concept in the form of a mm-Wave Digital to Analog Radio Frequency Converter design. The mm-Wave transmitter is I/Q Cartesian RFDAC based on all-digital modulator concepts and challenges in the 28 nm CMOS process. Results and ideas presented are based on simulations and design requirements. The RFDAC implementation is a direct Base Band to RF conversion which offers a competitive solution to the classical RF transmitter chain. Final design is a class B current steering RFDAC for improved efficiency. In addition, the linearity vs. efficiency tradeoffs of the IQ Cartesian combining is discussed, assuming the simplified model of IQ interactions presented as well as considerations for beamforming architecture. Expected ENOB limitation before calibration would be of 7 bits reaching an EVM of 30dB.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479974733
DOIs
StatePublished - 17 Dec 2015
EventIEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015 - Tel-Aviv, Israel
Duration: 2 Nov 20154 Nov 2015

Publication series

Name2015 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015

Conference

ConferenceIEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems, COMCAS 2015
Country/TerritoryIsrael
CityTel-Aviv
Period2/11/154/11/15

Keywords

  • CMOS
  • Digital Beamforming
  • Quadrature modulator
  • mm-Wave DAC

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