| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission output detection apparatus that supplies a DC current between the transmission route side and a detection circuit. Ž<P>SOLUTION: A transmission output detection apparatus includes an FET 31 with the source or drain connected with a terminal 11 on the power amplification circuit side, the other connected with a terminal 12 on the antenna side to form a transmission route for passing a transmission signal, and the gate connected with a control terminal 15, an FET 33 with the drain connected with a terminal 11 on the power amplification circuit side and the gate connected with a control terminal 16, and a detection unit 40, i.e., a means connected with the source of the FET 33 for detecting a transmission signal which leaks from the FET 33. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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