| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio transmission apparatus for efficiently monitoring an operating state of an analogue transmitting section, with a simple structure. <P>SOLUTION: The radio transmission apparatus is provided with the analogue transmitting section for converting a D/A converted transmission signal into an intermediate-frequency signal and a radio frequency signal and amplifying them, a monitor signal extracting section for extracting the amplified radio frequency signal and converting it to the intermediate frequency signal to form a monitor signal, and a determining section for determining whether or not the analogue transmitting section is abnormal by comparing a frequency component of the monitor signal with an expectation value preliminarily set to the frequency component. <P>COPYRIGHT: (C)2009,JPO&INPIT |
