| 摘要 |
PURPOSE: An antenna device of a relay system is provided to offset a beam pattern influencing on antenna isolation, and to closely install a link antenna device and a coverage antenna device, thereby preventing power consumption by reducing transmission lines. CONSTITUTION: A link antenna device(100) transceives electric waves with a base station. A coverage antenna device(200) performs a transceiving with a subscriber terminal. A relay device(300) is connected between the link antenna device(100) and the coverage antenna device(200), and performs a bidirectional amplifying process. The link antenna device(100) comprises duplicating elements and a feeder(150). The feeder(150) controls phases and electric fields of signals received in the duplicating elements, and offsets a beam pattern influencing on isolation. |
