Abstract
We study on the transmission antennas for the road race live broadcast in order for high reliability of transmission and reduction of the number of the reception antennas. In this report, we examined an array antenna to give high gain toward forward and backward direction of the OB van. On the other hand, there are many types of equipment on the top of the OB van. Therefore, we consider the influence on the radiation patterns of antennas in the computer simulations. As a result, we confirmed the improvement of the antenna gain even the antennas on the OB van.
