| 摘要 |
PROBLEM TO BE SOLVED: To perform highly accurate self diagnosis by suppressing mixture of noise components, in a FDD system transmitter/receiver performing self diagnosis by using a transmission signal.SOLUTION: A transmitter/receiver 10 includes a transmission mixer 20 which outputs a transmission high frequency wave by admixing a local oscillation wave to a transmission signal, a reception mixer 30 which outputs a reception signal by admixing a local oscillation wave to a reception signal during normal operation, and outputs a signal for self diagnosis by admixing an oscillation wave for self diagnosis to the transmission high frequency wave during self diagnosis, oscillation means 40 which outputs the local oscillation wave or the oscillation wave for self diagnosis, and processing means 50 for processing the reception signal or the signal for self diagnosis. |
