Communication between moving vehicles is very important for safety. In this paper, a bidirectional antenna that can be installed\ninside a vehicle is proposed and tested in a real vehicular environment at 5.8 GHz. The forward link and backward link seated by\ntwo persons and three persons were compared in terms of received RF power and the peak-to-average power ratio (PAR). It was\nfound that, even with three persons, the power link fulfilled the communication requirements using the proposed antenna.
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