A 65 nm CMOS transmitter chain for scalable 28 GHz phased-array systems

Avraham Sayag, Itamar Melamed, Emanuel Cohen

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

Abstract

A compact, scalable, and low power direct conversion transmitter chain for 28 GHz phased-array systems is presented. The chain comprises a sub-sampling PLL operating from a 1 GHz reference clock, a high-side double-balanced up-conversion mixer with an IF input at 5 GHz, and a two-sage class AB power amplifier. A chip prototype was fabricated in TSMC's 65 nm bulk CMOS and characterized in measurement. The transmitter chain supports up to 2 GHz signal bandwidth, consumes 70 mW at OP1dB of 11 dBm, and achieves -32 dB EVM for a 480 MHz OFDM signal at 8 dB backoff from OP1dB.

Original languageEnglish
Title of host publicationProceedings of the 2020 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems
Subtitle of host publicationMaking Waves in Texas, WMCS 2020
ISBN (Electronic)9781728161921
DOIs
StatePublished - May 2020
Event2020 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2020 - Virtual, Online, United States
Duration: 26 May 202028 May 2020

Publication series

NameProceedings of the 2020 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems: Making Waves in Texas, WMCS 2020

Conference

Conference2020 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2020
Country/TerritoryUnited States
CityVirtual, Online
Period26/05/2028/05/20

Keywords

  • 5G
  • 5G technologies and architectures
  • NR
  • beamforming
  • direct conversion
  • mm-Wave
  • phased array
  • transmitter

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Instrumentation

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