| 摘要 |
Provided is a multi band mobile communications terminal in which a plurality of power amplifiers used according to each band are controlled using a minimized number of control signals, whereby fabrication cost can be reduced and a General Purpose Input/Output (GPIO) port can efficiently be used, the multi band mobile communications terminal comprising: a controller for outputting transmission signals according to each band and one amplification enable signal; a plurality of power amplifiers for amplifying transmission signals according to each band, respectively; selection devices for selecting each power amplifier according to levels of the transmission signals; and a switching device for supplying a power supply voltage to each power amplifier according to the amplification enable signal, the power amplifier and the selection device being further connected whenever one transmission signal according to each band is added.
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