A novel method for water impurity concentration using microstrip resonator sensor

Water pollution is one of the severe problems that have a crippling effect on public hygiene. The detection of impurities present in the water is of high priority to battle its effects. In this paper, we propose a novel method to perform detection of such impurities by exploiting the dielectric constant variations caused by its presence. We present a microstrip resonator that measures the dielectric constant (relative permittivity) of the water by means of variation in resonant frequency. The design makes use of Defected ground structure (DGS) for enhanced resonance. The electromagnetic field distribution, resonant frequency and quality factor of the design are computed and analyzed. The microstrip resonator presented here has some virtues such as simple structure, easy manufacture, low cost etc. The resonator has been simulated using HFSS 9.