Deformation evaluation of embedded antennas in vehicular components

In this paper, an attempt is made to extend the deformation model of an antenna embedded in vehicular component, where the component consists of a viscoelastic thermoset composite polymer commonly known as Sheet Moulding Compound (SMC). The initial model developed takes into account time dependent heat transfer from the tool surface into the SMC charge and the consequent time dependent viscosity propagation during the initial stage of tool closing and subsequent filling. The required model parameters for viscosity and elasticity have been determined from rheological testing. The extended model examines the effects of some process parameters such as tool closing speed, tool temperature and initial charge temperature. The effect of these parameters on the deformation of the antenna is discussed and compared to experimental findings. In addition the signal quality due to antenna deformation is investigated by comparing simulation and experimental results.