FDTD analysis of field distribution in an elevator car by using various antenna positions and orientations

In indoor coverage planning the lift car is considered to be one of the most difficult propagation environments. The authors have studied radiowave propagation in this environment by means of an FDTD simulation. The lift shaft and the transmitting antenna are also modelled. A short dipole antenna is placed at various orientations and positions and the influence of these factors on the electric field distribution in a lift car is examined. It is found that for practical lift car coverage planning purposes, the placement and orientation of a short dipole antenna are not of any significant importance