| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent oscillation due to an interference signal in a direct radio frequency repeater for wireless mobile communication. <P>SOLUTION: A feedback-interference-signal canceled radio frequency repeater with built-in antennas has a downlink path from a base station to a terminal set and an uplink path from the terminal set to the base station, wherein the downlink path and the uplink path are separated and combined by a duplexer. The apparatus has a donor antenna and a coverage antenna, which are built-in as to be integrated with the repeater in one body. The apparatus also has a built-in feedback-interference-signal cancellation module for preventing oscillation due to the feedback signal between the antennas in the radio frequency repeater. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
