衛星通信用可搬アンテナへ適用した分散ァレー構成技術の実験的検証

摘要

This paper presents the a Distributed Array Antenna (DAA) that is applied for portable type satellite communication antennas. The DAA consists of several small antennas, an array controller and a modem. The array controller controls the phase of each antenna's transmitting and receiving signal appropriately to realize in-phase combining. To enhance versatility, we allow to utilize existing antennas and a modem by employing the array controller at IF band. The array controller compensates each antenna's phase drift, that degrades DAA's gain, by monitoring loopback receiving signal level. To verify the DAA constructing technique, we fabricated a DAA which consisted of two portable type antennas and tested the antenna using a Ku-band satellite link. These result showed the DAA offered desired performances.%本報告では，衛星通信地球局用の複数の可搬アンテナを連係動作させて利得向上を図る分散アレーァンテナ技術を適用し，Ku帯衛星回線を用いた評価を行った.評価した分散アレーアンテナは，変復調装置の入出力信号に対して，分散アレー制御装置を介してアンテナ装置を接続した構成であり，分散アレー制御装置は，2つのアンテナ装置間の相対位相変動を常に補償するように動作する.衛星回線を用いた実験的評価の結果，アンテナ数に応じた利得向上を実現できていることを確認した.