| 摘要 |
PURPOSE:To attain better reception by applying diversity reception with two sets of receivers, while utilizing the rest receiver so as to seek an antenna with higher output. CONSTITUTION:Plural directivity antennas A1-A6 are connected to three sets of receivers RX1-RX2 via antenna changeover switches SA-SN. Then diversity reception is applied by using two sets of receivers connected always to a high- order antenna and a directivity antenna not connected is searched by using the 3rd rank receiver. When a directivity antenna having an input larger than the reception input of the high-order two sets is found out, antenna switching controllers CA-CN control the changeover switches SA-SN to reconnect the said antenna with an antenna connected to the two sets of the receivers. Thus, better reception is attained in this way. |
