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http://dx.doi.org/10.12673/jant.2019.23.1.69

Design of Microstrip Defected Ground Structure-based Sensor with Enhanced-Sensitivity for Permittivity Measurement  

Yeo, Junho (School of Computer and Communication Engineering/Information and Communication Research Center, Daegu University)
Lee, Jong-Ig (Division of Mechatronics Engineering, Dongseo University)
Publication Information
Journal of Advanced Navigation Technology / v.23, no.1, 2019 , pp. 69-76 More about this Journal
Abstract
In this paper, a design method for an enhanced-sensitivity microwave sensor based on microstrip defected ground structure was studied for the permittivity measurement of planar dielectric substrates. The proposed sensor was designed by modifying the ridge structure of an H-shaped aperture into the shape of a capacitor symbol. The sensitivity of the proposed sensor was compared with that of a conventional sensor based on a double-ring complementary split ring resonator(DR-CSRR). Two sensors were designed and fabricated on a 0.76-mm-thick RF-35 substrate so that the transmission coefficient would resonate at 1.5 GHz in the absence of the substrate under test. Five types of taconic substrates with a relative permittivity ranging from 2.17 to 10.2 were selected asthe substrate under test. Experiment results show that the sensitivity of the proposed sensor, which is measured by the shift in the resonant frequency of the transmission coefficient, is 1.31 to 1.62 times higher than that of the conventional DR-CSRR-based sensor.
Keywords
Enhanced-sensitivity; Capacitor-symbol shape; Defected ground structure; Microstrip line; Permittivity measurement;
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1 Z. Akhter and M. J. Akhtar, "Free-space time domain position insensitive technique for simultaneous measurement of complex permittivity and thickness of lossy dielectric samples," IEEE Transactions on Instrumentation and Measurement, Vol. 65, No. 10, pp. 2394-2405, Oct. 2016.   DOI
2 T. W. Athey, M. A. Stuchly, and S. S. Stuchly, "Measurement of radio frequency permittivity of biological tissues with an open-ended coaxial line: Part I," IEEE Transactions on Microwave Theory and Technology, Vol. 30, No. 1, pp. 82-86, Jan. 1982.   DOI
3 A. Raj, W. Holmes, and S. Judah, "Wide bandwidth measurement of complex permittivity of liquids using coplanar lines," IEEE Transactions on Instrumentation and Measurement, Vol. 50, No. 4, pp. 905-909, Aug. 2001.   DOI
4 K. T. Mathew and U. Raveendranath, "Waveguide cavity perturbation method for measuring complex permittivity of water," Microwave and Optical Technology Letters, Vol. 6, No. 2, pp. 104-106, Feb. 1993.   DOI
5 E. Fratticciolli, M. Dionigi, and R. Sorrentino, "A simple and low-cost measurement system for the complex permittivity characterization of materials," IEEE Transactions on Microwave Theory and Technology, Vol. 53, No. 4, pp. 1071-1077, Aug. 2004.
6 W. Withayachumnankul, K. Jaruwongrungsee, A. Tuantranont, C. Fumeaux, and D. Abbott, "Metamaterial-based microfluidic sensor for dielectric characterization," Sensors and Actuators A: Physical, Vol. 189, pp. 233-237, Jan. 2013.   DOI
7 K. T. M. Shafi, A. K. Jha, and M. J. Akhtar, "Improved planar resonant RF sensor for retrieval of permittivity and permeability of materials," IEEE Sensors Journal, Vol. 17, No. 17, pp. 5479-5486, Sep. 2017.   DOI
8 M. S. Boybay and O. M. Ramahi, "Material characterization using complementary split-ring resonators," IEEE Transactions on Instrumentation and Measurement, Vol. 61, No. 11, pp. 3039-3046, Nov. 2012.   DOI
9 C. Li and F. Li, "Characterization and modeling of a microstrip line loaded with complementary split-ring resonators (CSRRs) and its application to highpass filters," Journal of Physics D: Applied Physics, Vol. 40, pp. 3780-3787, Jun. 2007.   DOI
10 C.-S. Lee and C.-L. Yang, "Complementary split-ring resonators for measuring dielectric constants and loss tangents," IEEE Microwave and Wireless Components Letters, Vol. 24, No. 8, pp. 563-565, Aug. 2014.   DOI
11 A. Salim and S. Lim, "Complementary split-ring resonator-loaded microfluidic ethanol chemical sensor," Sensors, Vol. 16, pp. 1802, Oct. 2016.   DOI
12 Sensors play key role in pushing industry into fourth age [Internet]. Available: http://crown.co.za/images/magazines/electricity-control/SpotOn/Sensors_play_key_role_in_pushing_industry_into_Fourth_Age.pdf.
13 K. Saeed, M. F. Shafique, M. B. Byrne, and I. C. Hunter, Planar microwave sensors for complex permittivity characterization of materials and their applications, in Applied Measurement Systems, London, United Kingdom: IntechOpen, ch. 15, pp. 319-350, 2012.
14 J. Baker-Jarvis, E. Vanzura, W. Kissick, "Improved technique for determining complex permittivity with the transmission/reflection method," IEEE Transactions on Microwave Theory and Technology, Vol. 38, No. 8, pp. 1096-1103, 1990.   DOI
15 A. Ebrahimi, J. Scott, and K. Ghorbani, "Differential sensors using microstrip lines loaded with two split ring resonators," IEEE Sensors Journal, Vol. 18, No. 14, pp. 5786-5793, May 2018.   DOI
16 Taconic PTFE laminates [Internet]. Available: http://www.taconic.co.kr/pages/sub02_03.php.