A Compact Dual-Band Antenna Sensor for Multiband Sensing Application

This work presents the design and execution of a triangular, inexpensive microwave sensor for multiband sensing applications. The suggested sensor makes use of a Triangular Shape Split Ring Resonator (TSSRR) as radiating patch, which gives a high Q factor. The design with footprint of 0.08 λL x 0.3 λL size make it very small and hence useful for portable applications. The sensor's substrate is chosen as a low loss Arlon material with a dielectric constant of 2.5 and a loss tangent of 0.0013. In order to characterize various oil samples, toluene, and ethanol etc., the sensor provides a strong sensing characteristic at the ISM bands with a high Q value of 43.24. The highest sensitivity of 10.62% is obtained with proposed sensor by submerging it within the sample material and hence make it very convenient for real-time monitoring in industrial, agricultural, and healthcare applications because to their affordability and small size, especially when it comes to guaranteeing food safety. The efficiency of the sensors is confirmed by experimental results, which also show that they have the potential to be widely used in a variety of sensing applications.