| 摘要 |
PROBLEM TO BE SOLVED: To provide a relay broadcasting device causing no oscillation phenomenon even when the connection of a transmission antenna is changed over from an active transmitter-receiver to a reserve one, and to provide a sneak reducing device for materializing such a relay broadcasting device. SOLUTION: The relay broadcasting device 1 is equipped with a first transmitter-receiver 42 and a second transmitter-receiver 43. The relay broadcasting device 1 uses any one of the first transmitter-receiver 42 and the second transmitter-receiver 43 as an active transmitter-receiver and uses the other as a reserve transmitter-receiver. A switch 98 selects which one of the first transmitter-receiver 42 and the second transmitter-receiver 43 is to be used as an active transmitter-receiver. While the first transmitter-receiver 42 operates as an active transmitter/receiver, a tap coefficient calculation section 20b of the second transmitter-receiver 43 outputs a tap coefficient of which the value is zero, to an FIR filter 52b and stands by. COPYRIGHT: (C)2009,JPO&INPIT |
