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A study on small sensor node antenna performance camouflaged under grassland fire

Oliveira, T.O. ; Vala, M. ; Faria, S. ; Reis, J. R. ; Leonor, N. ; Caldeirinha, Rafael

A study on small sensor node antenna performance camouflaged under grassland fire, Proc International Federation for Information Processing IFIP International Internet of Things Conference IFIP IOT, Amsterdam, Netherlands, Vol. , pp. - , November, 2021.

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Abstract
In this paper, the impact of vegetation and  re on the radiation pattern of a small antenna to be used in a WSN sensor node, is studied. The proposed antenna used in this study is based on a differential patch design, tuned to operate in the 2.4 GHz frequency band. The antenna presents a reduced size of 45 x 45 mm2 (0.36  x 0.36 ). The simulations were carried using a full-wave EM solver (CST MWS) considering four di erent scenarios: the  rst scenario only containing the antenna placed on the ground to serve as reference; in the second scenario vegetation was introduced to serve as the ormal" state of the terrain surrounding the sensor node; the third scenario includes the impact of surrounding  re considering the permittivity expected during such an event; and the last simulation was performed to include all the previous components simultaneously.