| 摘要 |
<p>A one frequency repeater includes a receiver (2) for receiving a reception signal through a receiving antenna (1), a variable frequency characteristic filter (5) for generating a signal for cancelling an interference signal caused by leakage of a transmission signal into a receiving antenna (1), an adder (4) for adding the interference signal and the reception signal, a demodulator (7) for demodulating an output signal from the adder, a data converter (9) for converting an output signal from the modulator, a modulator (11) for modulating a carrier according to an output from the data converter (9), and a transmitter (13) for transmitting from a transmitting antenna (15) an output signal modulated by the modulator (11). The variable frequency characteristic filter (5) receives the signal modulated by the modulator (11), is controlled in response to a control signal including the output from the data converter (9), and supplies the interference cancellation signal to the adder (4). </p> |
