Measurement of received polarization characteristics by a vehicle-mounted antenna in cellular communication environments

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  • セルラ通信環境における車載アンテナの受信偏波特性の測定
  • セルラ ツウシン カンキョウ ニオケル シャサイ アンテナ ノ ジュシン ヘンパ トクセイ ノ ソクテイ

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We carried out measurements of the received power at three different antenna positions. By the measurement, we clarified the dependency of the XPD characteristics on the installation situation of a receiving antenna in a vehicle. We also evaluate the gain where the dual polarizations are ideally received and utilized. It is equivalent to the diversity gain of the maximal ratio combing. Therefore, using the measured data, we evaluated the gain of the space diversity and the polarization diversity. Based on these considerations, we discuss the effectiveness of the horizontal polarization focusing on the antenna installation situation.

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