| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a transmitter-receiver that can obtain a desired wave by suppressing an interference wave, even when a signal level of the interference wave is higher than that of the desired wave to a degree that the level exceeds a dynamic range of an analog/digital converter. SOLUTION: This transmitter-receiver is provided with a transmission signal generating means 1, a 1st digital/analog converter 2a that applies digital/analog conversion to an output of the transmission signal generating means 1, a 1st transmitter 3a that transmits an output of the 1st digital/analog converter 2a, a transmission antenna 4 that emits an output of the 1st transmitter 3a, a receiving antenna 6 that receives an object received signal and an interference signal emitted from the transmitting antenna 4, an adaptive filter 5 that converts the output of the transmission signal generating means 1 into a signal with an opposite phase to and equal amplitude to those of the interference signal, a 2nd digital/analog converter 2b that applies digital/ analog conversion to an output of the adaptive filter 5, a 2nd transmitter 3b that transmits an output of the 2nd digital/analog converter 2b, a synthesizer 7 that synthesizes an output of the 2nd transmitter 3b with an output of the reception antenna 6, a receiver 8 that receives an output of the synthesizer 7 and an analog/digital converter 9, that applies analog/digital conversion to an output of the receiver 8.</p> |
