Evolutionary Optimization of Antennas for Structural Health Monitoring

Monitoring and surveillance of buildings, especially in critical infrastructure is crucial to increase the lifetime such structures. This due fact, that concrete like bridges or road tunnels are prone corrosion their exposure elements. For this task, wireless sensor nodes can be employed structural health monitoring. In last few years passive RFID sensors have been proposed gather data from inside However, designing antennas which operational transmit node outside world extremely challenging, fact performance depended on surrounding material. work, fully automatized design an antenna for UHF band with varying electrical properties demonstrated. Using a novel multi-objective optimization method, over wide range dielectric materials. contrast conventional approaches, no air spacers boxes needed around antenna. The parameters carefully obtained during curing drying process, outdoor environment 65% relative humidity. After 157 days drying, reflection coefficient −13 dB gain −84 achieved, at water content 4.2% by mass.