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    A Compact, Passive Frequency-Hopping Harmonic Sensor Based on a Microfluidic Reconfigurable Dual-Band Antenna

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    Name:
    Sensors-32893-2020.R1_Proof_hi.pdf
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    2.546Mb
    Format:
    PDF
    Description:
    Accepted manuscript
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    Type
    Article
    Authors
    Zhu, Liang
    Farhat, Mohamed
    Chen, Yi-Chao
    Salama, Khaled N. cc
    Chen, Pai-Yen
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Sensors Lab
    Date
    2020-06-08
    Online Publication Date
    2020-06-08
    Print Publication Date
    2020-11-01
    Permanent link to this record
    http://hdl.handle.net/10754/663448
    
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    Abstract
    We propose here a fully-passive wireless liquid sensor using a harmonic transponder, which comprises a dual-band microstrip antenna reconfigured by different types of liquids injected in a fluidic cavity. Different from traditional radio-frequency (RF) backscatter sensors, the proposed harmonic-transponder sensor (or harmonic sensor) receives frequency-hopped RF monotones and backscatters their second harmonics, with the peak frequency shifted by dielectric properties of liquid mixtures. This microstrip antenna has a hybrid-feed structure, of which an outer split-ring patch exhibits a narrow-band TM310 mode at the fundamental frequency (f0) and an inner elliptical patch displays a wideband resonance centered at the second-harmonic frequency (2f0), achieved with hybridization of TMe110 and TMo110 modes. In particular, the outer split-ring patch is loaded with a fluidic channel system to tune the resonance frequency of the TM310 mode (f0). We demonstrate that the type of liquid mixture filling in the fluidic cavity can be clearly perceived by reading the peak received signal strength indicator (RSSI) in the spectrum of second harmonics. Our results show the potential for deploying this passive wireless sensor in noisy environments that include clutters, multiple reflections, jamming, and crosstalks.
    Citation
    Zhu, L., Farhat, M., Chen, Y.-C., Salama, K. N., & Chen, P.-Y. (2020). A Compact, Passive Frequency-Hopping Harmonic Sensor Based on a Microfluidic Reconfigurable Dual-Band Antenna. IEEE Sensors Journal, 20(21), 12495–12503. doi:10.1109/jsen.2020.3000778
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Sensors Journal
    DOI
    10.1109/JSEN.2020.3000778
    Additional Links
    https://ieeexplore.ieee.org/document/9110883/
    https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9110883
    ae974a485f413a2113503eed53cd6c53
    10.1109/JSEN.2020.3000778
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; Sensors Lab; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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