ANTENNA ADJUSTING METHOD AND COMMUNICATION SYSTEM

• Main Authors: SHIMIZU TATSUYA, IIZUKA MASATAKA, TSUBOI HIDEYUKI, TSUCHIYA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2017
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

PROBLEM TO BE SOLVED: To adjust the position of an axis for transmission and reception of OAM waves.SOLUTION: A communication device 20 receives, with a plurality of antenna elements 22 of an array antenna 21, a signal of an OAM wave transmitted by a communication device 10. An axial displacement estimation and control unit 26 of the communication device 20 finds a phase error between phases of the reception signal of the OAM waves received by the respective antenna elements 22 and a phase of the reception signal when there is no positional displacement between a reception axis of the array antenna 21 and a transmission axis of an array antenna 13 of the communication device 10, and calculates the amount of movement to adjust the position of the array antenna 21 from the found phase error. The axial displacement estimation and control unit 26 adjusts the position in a horizontal direction and the position in a vertical direction of the array antenna 21 on the basis of the calculated amount of movement.SELECTED DRAWING: Figure 1 【課題】ＯＡＭ波の送受信の軸の位置を調整する。【解決手段】通信装置２０は、アレイアンテナ２１の複数のアンテナ素子２２により、通信装置１０が送信したＯＡＭ波の信号を受信する。通信装置２０の軸ズレ推定・制御部２６は、複数のアンテナ素子２２のそれぞれにおいて受信したＯＭＡ波の受信信号の位相と、アレイアンテナ２１の受信軸と通信装置１０のアレイアンテナ１３の送信軸との間に位置ズレがないときの受信信号の位相との位相誤差を求め、求めた位相誤差からアレイアンテナ２１の位置を調整する移動量を算出する。軸ズレ推定・制御部２６は、算出した移動量に基づいて、アレイアンテナ２１の水平方向の位置の調整と垂直方向の位置の調整とを行う。【選択図】図１