Specific Absorption Rate Induced in a Plant Leaf from a Wearable Antenna for Smart Agriculture

Wearable plant sensors are expected to play an essential role in the future development of precision agriculture. Given that plant wearable antennas function on the leaves, the electromagnetic interaction between the antennas and the leaves needs to be studied. This work presents the results for specific absorption rate (SAR) in a ZZ plant leaf from a wearable antenna for “smart” agriculture which is very important for both potential applications and constraints for crop monitoring and management using this emerging technology. The results show that the overall average SAR values for the plant leaf at 2.4 GHz and 2.48 GHz are 1.106 W/kg and 1.1156 W/kg, respectively. SAR distributions, representative histograms and descriptive statistics in the different layers of the leaf at 2.4 GHz (Fig. 2) and 2.48 GHz are also presented.