| 摘要 |
A radio communication device and a power supplying method for a radio communication device are provided to be capable of operating a high-frequency power amplifier in an optimum state and having high power utilization efficiency. A radio communication device(100) has an antenna(110), a high-frequency power amplifying part(120) that supplies a transmission signal to the antenna, a rectifying part(130) that converts a high-frequency signal power into a direct current power, a circulator(140), a signal source(150) that generates a transmission signal, and a power supply unit(160). The signal source modulates an input voice signal to convert it into a high-frequency signal of a predetermined frequency band, for example. The amplifying part power-amplifies the high-frequency signal given from the signal source and provides the amplified high-frequency signal to the circulator. In the circulator, a 1st port P1 is connected to the output terminal of the amplifying part, a 2nd port P2 is connected to the antenna, and a 3rd port P3 is connected to the rectifying part. In general, a circulator transfers a signal input to a 1st port to a second port and a signal input to a 2nd port a 3rd port. Thus, the circulator outputs the high frequency signal from the 1st port P1 to the 2nd port P2. |
