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Detection of Ethanol Concentration in Liquid Using a Double-Layered Resonator Operating at 5G-mm-Wave Frequencies

Qureshi, Suhail Asghar; Abidin, Zuhairiah Zainal; Majid, Huda A.; Ashyap, Adel Y. I.; See, Chan Hwang


Suhail Asghar Qureshi

Zuhairiah Zainal Abidin

Huda A. Majid

Adel Y. I. Ashyap


A new sensing technique for rapidly detecting ethanol concentration in aqueous solutions based on electromagnetic resonance is discussed. The sensor has two substrate layers and operates at 5G-mm-wave frequencies. An experimental study of the new resonator's configuration determines the sensor's sensitivity. During the measurements, 6 samples were modeled with varying amounts of ethanol concentration in the water. The results showed that S 11 resonance moves linearly towards higher frequencies as the ethanol content increases. The resonant frequency shifted at 0.178 GHz per 10% increase in ethanol towards higher frequencies. As a result, the proposed 5G-mm-wave-sensing technique based on a replaceable sensing layer was proved to be suitable for rapid, accurate, and low-cost alcohol content detection in liquids.

Journal Article Type Article
Acceptance Date Sep 1, 2022
Online Publication Date Sep 26, 2022
Publication Date 2022-12
Deposit Date Sep 27, 2022
Journal Journal of Electronic Materials
Print ISSN 0361-5235
Electronic ISSN 1543-186X
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 51
Pages 7028-7036
Keywords Resonator, 5G-mm-wave, Ethanol, Liquid, Sensor
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