Publication

Abstract : Wireless communication plays a significant role in a wide range of applications in today's life. It is achieved by maintaining the transmission and reception of the electromagnetic signals. It is influenced by the frequency of operation, the medium at which the signal propagates and the material characterization of the biotic/abiotic components that exist in the environment. When the electromagnetic wave (EM) propagates through a dielectric medium like biotic components, the material properties vary based on permittivity (ε) and permeability (μ) of that medium. The propagation of an EM wave in a dielectric medium is characterized by the velocity of propagation, attenuation, and dispersion, which is influenced by the medium's permittivity and permeability. The velocity of the propagation varies, as it is inversely proportional to the square root of the product of permeability and permittivity. The antennas that exist in the wireless communication systems are the source of the electromagnetic signals. Based on the literature, it is identified that the antenna resonance at 2.45 GHz showed a relative change in the return loss from 2.8 % to 73.68 % by the influence of plant species when compared with the free space characteristics. This variation is reported based on the study performed on 25 different plant species. It is based on the physical and morphological characteristics of the plant species. So this study focuses on analyzing the material characteristics of the different plant species based on the frequency of exposure of electromagnetic signals at 2.45 GHz. For the experimental validation, the plant is exposed over the period of 14 hours and analyzed the material characteristics using the Keysight N1500A-001 Solid dielectric probe kit. The observed value is compared with the material characterization of the specific plant species without the influence of electromagnetic signals.