© The Institution of Engineering and Technology
In this Letter, a non-destructive microwave resonant sensor based on the modified complementary split-ring resonator has been proposed and analysed with respect to its sensitivity for detecting the aqueous biochemicals. This technique is based on the perturbation theory and only requires to measure resonant frequency and hence, achieving a substantial reduction in the computation time and cost. The proposed sensor is designed to achieve high sensitivity performance with a measured quality factor of the sensor in the bare state, Q B = 631.5, at the centre frequency of f o = 6.31 GHz. The proposed sensor has a maximum sensitivity of S = 6.23 MHz with respect to a unit change in the dielectric constant value. A numerical model is developed for the dielectric constant of the biochemicals as a function of the resonant frequency. The proposed sensor, therefore, provides high sensitivity, simple structure layout and real-time response with cost effectiveness. The proposed structure can be a potential candidate for the non-intrusive sensing of aqueous biochemicals.
References
-
-
1)
-
2. Mehrotra, P., Chatterjee, B., Sen, S.: ‘EM-wave biosensors: a review of RF, microwave, mm-wave and optical sensing’, Sensors, 2019, 19, (5), pp. 1–46.
-
2)
-
3. Abdolrazzaghi, M., Daneshmand, M., Iyer, A.K.: ‘Strongly enhanced sensitivity in planar microwave sensors based on metamaterial coupling’, IEEE Trans. Microw. Theory Technol., 2018, 66, (4), pp. 1843–1855, doi: 10.1109/TMTT.2018.2791942.
-
3)
-
9. Samant, H., Jha, A.K., Ansari, M.A.H., et al: ‘Design of CPW fed IDC resonator for non-invasive testing of chemical solvents’. 2015 IEEE 16th Annual Wireless and Microwave Technology Conf. (WAMICON), Cocoa Beach, FL, 2015, pp. 1–4, doi: 10.1109/WAMICON.2015.7120405.
-
4)
-
5. Zhou, R., Zhang, H., Xin, H.: ‘Liquid-based dielectric resonator antenna and its application for measuring liquid real permittivities’, IET Microw. Antennas Propag., 2014, 8, (4), pp. 255–262.
-
5)
-
7. Bahar, A.A.M., Zakaria, Z., Arshad, M.K.Md., et al: ‘Real time microwave biochemical sensor based on circular SIW approach for aqueous dielectric detection’, Sci. Rep., 2019, 9, p.5467.
-
6)
-
4. Iqbal, A., Smida, A., Saraereh, O.A., et al: ‘Cylindrical dielectric resonator antenna-based sensors for liquid chemical detection’, Sensors, 2019, 19, p. 1200.
-
7)
-
6. Memon, M.U., Lim, S.: ‘Substrate-integrated-waveguide based chemical sensor’. KIEES Summer Conf., Jeju Island, Republic of Korea, 2016, pp. 2–4, doi.:10.13140/RG.2.1.3196.3762.
-
8)
-
1. Guarin, G., Hofmann, M., Nehring, J., et al: ‘Miniature microwave biosensors: noninvasive applications’, IEEE Microw. Mag., 2015, 16, (4), pp. 71–86.
-
9)
-
8. Ansari, M.A.H., Jha, A.K., Akhtar, M.J.: ‘Design and application of the CSRR-based planar sensor for noninvasive measurement of complex permittivity’, IEEE Sens. J., 2015, 15, (12), pp. 7181–7189, doi: 10.1109/JSEN.2015.2469683.
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2020.1661
Related content
content/journals/10.1049/el.2020.1661
pub_keyword,iet_inspecKeyword,pub_concept
6
6