A metamaterial-inspired miniaturized wide-band microwave interferometry sensor for liquid chemical detection

Ali Pourghorban Saghati, Jaskirat Singh Batra, Jun Kameoka, Kamran Entesari

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

5 Citations (Scopus)

Abstract

This paper presents a miniature wide-band interferometry sensor for dielectric spectroscopy and detection of liquid chemicals based on utilizing two composite right/left-handed (CRLH) transmission lines (TLs) in a zero-IF mixing configuration. The equivalent series capacitance of the CRLH TLs, constructed by using microstrip interdigital capacitors, is loaded with microfluidic channels, and exposed to the material under test (MUT) to act as the sensing element. Due to the nonlinear dispersion relation of the artificial TLs with respect to the sensing capacitor, higher sensitivity over a frequency band as wide as 4-8 GHz is achieved, compared to the previously-reported resonator- or capacitor-based sensors. The final fabricated system prototype is 4 cm×8 cm. Moreover, a calibration method is presented based on measurement results, which shows an rms error less than ∼1.5% for liquid-chemical permittivity detection. To the best of author's knowledge, this is the first disclosure of wide-band and highly-sensitive microwave interferometry sensor suitable for portable lab-on-board applications.

Original languageEnglish
Title of host publication2016 IEEE MTT-S International Microwave Symposium, IMS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509006984
DOIs
Publication statusPublished - 2016 Aug 9
Externally publishedYes
Event2016 IEEE MTT-S International Microwave Symposium, IMS 2016 - San Francisco, United States
Duration: 2016 May 222016 May 27

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2016-August
ISSN (Print)0149-645X

Other

Other2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Country/TerritoryUnited States
CitySan Francisco
Period16/5/2216/5/27

Keywords

  • Composite right/left-handed transmission line
  • interferometry sensor
  • permittivity measurement

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'A metamaterial-inspired miniaturized wide-band microwave interferometry sensor for liquid chemical detection'. Together they form a unique fingerprint.

Cite this