A Q-band compact amplifier with +22 dB gain, ± 0.5 dB flatness over 40% Fractional Bandwidth in Tower 130 nm CMOS

S. Jameson, N. Buadana, Z. Eliatim, I. Sarousi, A. Wolfman, O. Shaham

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

Abstract

This paper proposes an enhanced differential Cascode amplifier topology for mm-wave applications requiring wide-band amplification, flatness and compact integration area. It is here shown how to combine positive and negative feedbacks to improve drastically the stable gain of a Cascode amplifier. In addition with the use of compact 4th order transformers, a 2-stages amplifier with up to 11 dB gain per stage over 40 % fractional bandwidth and above fmax /2 is demonstrated while demonstrating as well one of the smallest core area (0.08 mm2). This topology presents currently a record small signal gain per stage at this technology node (fT/fmax of 87/90 GHz). The presented amplifier topology can be used repetitively and reliably to create wide-band amplifiers with state-of-the-art gain, flatness and return loss over small area. The circuit was realized using Tower's 130 nm CMOS.

Original languageEnglish
Title of host publication2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages266-269
Number of pages4
ISBN (Electronic)9780738146720
DOIs
StatePublished - 2021
Externally publishedYes
Event2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021 - Tel Aviv, Israel
Duration: 1 Nov 20213 Nov 2021

Publication series

Name2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021

Conference

Conference2021 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems, COMCAS 2021
Country/TerritoryIsrael
CityTel Aviv
Period1/11/213/11/21

Keywords

  • Amplifier
  • CMOS
  • Cascode
  • Flatness
  • K-band
  • Power amplifier

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