The present invention discloses a multi-mode signal transmission system and the transmission method thereof. The system comprises a transmitter, a selection device, a compensation device, and power amplifier modules. The transmitter comprises a Ramp Circuit connected to the transmitter and the power amplifier modules respectively. The selection device is configured between the transmitter and the power amplifier modules. The transmission method comprises: selecting a transmission module by the transmitter for transmitting the signal, the selection device strobes a transmission route between the transmission module and the power amplifier modules, and based on different transmission power parameters, the Ramp Circuit transmits different control signals to the power amplifier modules to adjust transmission gain of the power amplifier modules. The present invention has the purpose of improving the integration level of the chip and decreasing the board area and the difficulty of wiring.
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August 1, 2014
February 23, 2016
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