This paper presents a feasibility study on extending the applicability of the discrete RET (dRET) model to the trunk layer of raised canopy forests. The framework herein presented, proposes a method to predict the scattered signal inside and around a formation of cylinders (mimicking thin tree trunks), which is based on the prior knowledge of the cylinder 2D re-radiation pattern as input parameters to the dRET model. The characterization and modeling of the cylinder 2D re-radiation patterns was performed in an anechoic chamber so that frequency dependent effects could be evaluated. The assessment of the proposed method was performed against measurements within a formation of both metallic and dielectric cylinders mimicking thin tree trunks, at micro- and millimeter wave frequencies, i.e., 9.4, 18.8 and 37.6 GHz.