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Real‐time low cost compact liquid‐water binary mixture monitoring sensor
Author(s) -
Khuhro Sadam H.,
Sandhu Muhammad Y.,
Afridi Sharjeel,
Ahmed Arslan
Publication year - 2020
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32496
Subject(s) - microstrip , microwave , detector , resonator , power (physics) , binary number , materials science , voltage , electronic engineering , electrical engineering , engineering , optoelectronics , telecommunications , physics , arithmetic , mathematics , quantum mechanics
This work proposes a novel method for detecting the concentration of water present in liquid‐water binary mixture in real time with a low cost, portable measurement setup. The sensing element in the proposed system is a two‐port microstrip bandstop resonator based on coupled line open‐ended quarter wavelength section. Voltage control oscillator and power detector ICs are used to generate and detect the microwave power at specific bandstop frequency. Water concentrations in commercially available liquids are monitored both in batch and continuous mode of operation using separate 3D printed liquid containing fixtures attached to the open end of the microstrip line. The measured results successfully validate the design theory.