| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication device in which a high-frequency power amplifying part can operate in a suitable state and which has high electric power utilization efficiency. SOLUTION: The radio communication device has an antenna, an amplifying part which supplies transmission signal to the antenna, a rectifying part which converts an AC signal into DC power, and a circulator part. The circulator part has a first terminal connected to the amplifying part side, a second terminal connected to the antenna side, and a third terminal connected to the rectifying part side, where the input from the first terminal is output to the second terminal and an input from the second terminal is output to the third terminal. Furthermore, the radio communication device may be equipped with a phase shifting part which puts a transmission signal, reflected by the antenna in phase with a transmission signal sent from the first terminal, to the third terminal of the circulator part. When there are a plurality of carrier bands available, the radio communication device needs to be provided only with amplifying parts, circulator parts, and phase shifting parts by the bands. COPYRIGHT: (C)2009,JPO&INPIT
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