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A Terahertz Direct Detector in 22nm FD-SOI CMOS

  • Ritesh Jain
  • , Robin Zatta
  • , Janusz Grzyb
  • , David Harame
  • , Ullrich R. Pfeiffer
  • University of Wuppertal
  • Global Foundries, Inc.

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

39 Scopus citations

Abstract

This paper reports on the design and characterization of a CMOS based direct terahertz detector in an advanced 22nm FD-SOI technology. The nFET detector is implemented with an on-chip ring antenna fully compliant with the technology density rules. At 0.855 THz, a maximum optical responsivity and a minimum noise equivalent power (NEP) of 1.51 kV/W and 22.65 pW/HZ 1/2 respectively were measured in a voltage mode readout at a chopping frequency of 3 kHz. In the current mode readout, a maximum responsivity of 180 mA/W and minimum NEP of 12 pW/HZ 1/2 were measured at a chopping frequency of 120 kHz. Additionally, the effect of transistor back-gate biasing on the detector responsivity is also characterized. The detector sensitivity is comparable to the best reported room-temperature THz direct detectors in any silicon integrated technology, along with the highest reported RF operational bandwidth with NEP below 40 pW/HZ 1/2 in the measured frequency band of 0.7-1 THz.

Original languageEnglish
Title of host publicationEuMIC 2018 - 2018 13th European Microwave Integrated Circuits Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages25-28
Number of pages4
ISBN (Electronic)9782874870521
DOIs
StatePublished - Nov 16 2018
Event13th European Microwave Integrated Circuits Conference, EuMIC 2018 - Madrid, Spain
Duration: Sep 24 2018Sep 25 2018

Publication series

NameEuMIC 2018 - 2018 13th European Microwave Integrated Circuits Conference

Conference

Conference13th European Microwave Integrated Circuits Conference, EuMIC 2018
Country/TerritorySpain
CityMadrid
Period09/24/1809/25/18

Keywords

  • 22FDX
  • 22nm
  • CMOS
  • FD-SOI
  • NEP
  • Terahertz detector
  • on-chip antenna

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