A 162 GHz ring resonator based high resolution dielectric sensor

Hai Yu, Bo Yu, Xuan Ding, Juan Sebastian Gomez-Diaz, Qun Jane Gu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


This paper introduces a high-resolution dielectric sensor at 162GHz. The proposed system consists of a fundamental oscillator as the transmitter, a ring resonator based dielectric sensor, and a low noise super-regenerative receiver. A sinusoidal tone, generated by the transmitter, passes through the sensor and gets different attenuation due to the resonant frequency shift resulting from materials of different dielectric constants. The super-regenerative receiver then detects the resulting small signal difference caused by different dielectric constants to complete the sensing operation. The active transmitter and receiver are fabricated in CMOS technologies. Thanks to the ring resonator's high sensitivity and receiver's ultra-low noise, the sensor can achieve the best dielectric constant sensing resolution of 3.10×10-4 at the frequency range above 100GHz. The sensing system consumes total of 9mW DC power.

Original languageEnglish (US)
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781728168159
StatePublished - Aug 2020
Externally publishedYes
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: Aug 4 2020Aug 6 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X


Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
Country/TerritoryUnited States
CityVirtual, Los Angeles


  • Dielectric ring resonator
  • Dielectric sensing
  • Sub-THz sensing
  • Super-regenerative receiver

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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