| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a repeater device for stably relaying radio waves by preventing oscillation even when a sneak interference signal of strong intensity is generated anew other than an interference signal already suppressed. <P>SOLUTION: The repeater device includes: interference suppression devices 35a, 36a, and 37a for suppressing interference signals by sneak to receiving antenna 21, 22 of transmission signals; an abnormality detection means 51 for detecting abnormality by the interference signal generated anew by a change of surrounding environment; and a variable attenuator 53 for simultaneously controlling the transmission signal and a suppression signal generated by the interference suppression devices 35a, 36a, and 37a to suppress the interference signals and changing attenuation of a receiving signal mixed with the interference signal on the basis of the detection result of the detector 51. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
