Vehicle-caused pattern distortion at 800 MHz

The choice of mounting location and the antenna configuration used will effect system performance. The azimuth plane radiation patterns presented in this paper illustrate that it is possible to reduce the effects of the vehicle by choosing appropriate antennas. History has shown that the roof location gives the most omnidirectional coverage, but reality has shown that some customers, and to a lesser extent some vehicles just do not permit antennas and the associated transmission lines to be neatly installed in the roof. It's at this point that the alternatives must be understood and the patterns presented here are intended to further one's understanding.