A 5.3 GHz 16b 1.75 GS/S wideband RF mixing-DAC achieving IMD

E. Bechthum, G.I. Radulov, J. Briaire, Bart Geelen, A.H.M. Roermund, van

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

10 Citations (Scopus)
172 Downloads (Pure)

Abstract

Cellular multicarrier transmitters for communication infrastructure require both high linearity and large bandwidth (BW) at GHz frequencies. The combination of multicarrier GSM, WCDMA and LTE typically requires IMD80dBc in a large transmit bandwidth of 300MHz and at an output frequency of up to 3.5GHz and beyond. Current-Steering (CS) Nyquist DACs have large BW, but their linearity drops for increasing output frequencies [1]. A separate mixer is therefore needed to generate an RF signal with high linearity. A Mixing-DAC integrates the function of the mixer and DAC together. Using a Mixing-DAC can result in different architecture trade-offs which potentially enable a reduction of the cost and power consumption, while improving the linearity at high frequencies. The state-of-the-art Mixing-DACs attain linearity by means of A2 modulation [2,3] or low sample rate [4], but this results in a limited BW and does not result in a linearity better than IMD=-71dBc. Even a GaAs implementation [5] only achieves IMD=-70dBc while consuming 1.2W.
Original languageEnglish
Title of host publication2015 IEEE International Solid-State Circuits Conference (ISSCC), 22-26 Februar 2015, San Francisco
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages1-3
ISBN (Print)978-1-4799-6223-5
DOIs
Publication statusPublished - 2015
Event62nd IEEE International Solid-State Circuits Conference (ISSCC 2015) - San Francisco Marriott, San Francisco, United States
Duration: 22 Feb 201526 Feb 2015
Conference number: 62

Conference

Conference62nd IEEE International Solid-State Circuits Conference (ISSCC 2015)
Abbreviated titleISSCC 2015
Country/TerritoryUnited States
CitySan Francisco
Period22/02/1526/02/15

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