Broadband High-Efficiency mm-Wave 24-42.5 GHz SiGe PA Design Using Stacked Versus Cascaded Topologies

Jerry Tsay, Jill C. Mayeda, Jerry Lopez, Donald Y.C. Lie

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

Abstract

We present in this work two versions of broadband highly efficient millimeter-wave power amplifiers (mm-Wave PAs) design in a 90-nm SiGe technology. Both the 2-stage cascaded common-emitter (CE) PA and the 2-stacked PA can achieve wide 3-dB bandwidth from 20-45 GHz with POUT above 16-19 dBm in post-layout simulation, but the 2-stacked PA consistently outperforms the cascaded PA in power-added efficiency (PAE), achieving peak PAE at 36.9% (30 GHz) with max PAE remaining above ~30% from 24-45 GHz, which is ~8%-18% better than those of the 2-stage cascaded PA, thus suggesting the stacked PA topology to be rather attractive for high-efficiency broadband mm-wave applications.

Original languageEnglish
Title of host publicationProceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728118031
DOIs
StatePublished - Mar 2019
Event2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019 - Waco, United States
Duration: Mar 28 2019Mar 29 2019

Publication series

NameProceedings of the 2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019

Conference

Conference2019 Texas Symposium on Wireless and Microwave Circuits and Systems, WMCS 2019
Country/TerritoryUnited States
CityWaco
Period03/28/1903/29/19

Keywords

  • 5G
  • SiGe
  • broadband
  • high-efficiency
  • millimeter-wave (mm-wave)
  • power amplifier (PA)
  • stacked PA

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