58-GHz Up-Conversion Mixer Using Capacitive Cross-Coupling Neutralization in 180-nm CMOS Technology

Kenta Sahara, Kyoya Takano, Yohtaro Umeda, Shinsuke Hara, Akifumi Kasamatsu

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

Abstract

In the millimeter-wave band, the parasitic capacitances of MOSFETs cause degradation of the frequency bandwidth and the conversion gain of an up-conversion mixer. To improve the performance of an up-conversion mixer, we presents an up-conversion mixer with cross-coupled capacitors adopted in the local-oscillator (LO) input ports The cross-coupled capacitors cancel out the gate-to-drain capacitances of nMOSFETs for the LO input. It is verified by simulations that the bandwidth and the conversion gain are improved. The proposed mixer is fabricated by using a 180-nm CMOS process. It is shown that the proposed mixer has the-3 dB bandwidth of 5.9 GHz and the conversion gain of-8.2 dB. This work demonstrates the possibility of realizing 60-GHz transceivers in a mature, low-cost process.

Original languageEnglish
Title of host publicationGSMM 2021 - 2021 Global Symposium on Millimeter-Waves and Terahertz, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665437431
DOIs
Publication statusPublished - 23 May 2021
Event13th Global Symposium on Millimeter-Waves and Terahertz, GSMM 2021 - Nanjing, China
Duration: 23 May 202126 May 2021

Publication series

NameGSMM 2021 - 2021 Global Symposium on Millimeter-Waves and Terahertz, Proceedings

Conference

Conference13th Global Symposium on Millimeter-Waves and Terahertz, GSMM 2021
Country/TerritoryChina
CityNanjing
Period23/05/2126/05/21

Keywords

  • CMOS
  • Capacitive neutralization
  • cross-coupled capacitor
  • millimeter-wave band
  • up-conversion mixer

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