A study on the effect of water on the received power characteristics of water level gauge antennas installed in underpass

抄録

In this paper, we investigate the change in received power at the access point when the sensor terminal is submerged in water by electromagnetic field simulation, aiming to realize an underpass flooding monitoring system using IoT wireless access technology and obtaining design guidelines for such a system. In particular, since the relative permittivity and electrical conductivity of muddy water are unknown, simulations were performed by changing these parameters. As a result, it was confirmed that the received power decreased by approximately 5dB when the bottom of the antenna was submerged and by approximately 20dB when the antenna feed point was submerged.