Method and system for multi-mode signal transmission

Abstract

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.

What is claimed is: 
     
       1. A multi-mode signal transmission system, wherein said system comprises:
 a transmitter which includes a plurality of transmission modules and transmits signals through a currently used transmission module of the plurality of transmission modules; 
 power amplifier modules which are connected to the transmitter and are used to receive and amplify the signals; 
 a selection device which is set between the transmitter and the power amplifier modules and selects the currently used transmission module while transmitting the signals; and 
 a compensation device having inputs connected to the plurality of transmission modules respectively and an output coupled to an input of the power amplifier modules; wherein the compensation device performs a compensation to the transmission power output by the power amplifier modules according to the transmission module currently used; 
 wherein the compensation device comprises: 
 a selection module having inputs connected to the plurality of transmission modules respectively and an output coupled to the input of the power amplifier modules; the selection module selects the transmission module currently used and transmits a corresponding signal according to the selected transmission module; and 
 a compensation module which is set between the selection module and the input of the power amplifier modules; wherein the compensation module receives the corresponding signal transmitted by the selection module and sends a control signal for compensation of transmission gain to the power amplifier modules. 
 
     
     
       2. The multi-mode signal transmission system as disclosed in  claim 1 , wherein the plurality of the transmission modules share the same or similar frequency band. 
     
     
       3. The multi-mode signal transmission system as disclosed in  claim 1 , wherein inputs of the selection device are connected to a plurality of transmission modules respectively, an output of the selection device is connected to the power amplifier modules; when the transmitter transmits the signals through one of the transmission modules, the selection device selects the corresponding transmission module and switches on the transmission route between the transmission module and the power amplifier modules. 
     
     
       4. The multi-mode signal transmission system as disclosed in  claim 1 , wherein the selection module comprises:
 a selection component having inputs connected to the plurality of the transmission modules respectively and an output connected to the compensation module; wherein the selection component selects the transmission module currently used and inputs a corresponding selected signal according to the selected transmission module. 
 
     
     
       5. The multi-mode signal transmission system as disclosed in  claim 4 , wherein the selected signal is a transmission power parameter output when the transmitter transmits signals through the transmission module. 
     
     
       6. The multi-mode signal transmission system as disclosed in  claim 5 , wherein the compensation module comprises a conversion component which is connected to the selection component and converts the transmission power parameter transmitted by the selection component to a control signal matching with an adjusting signal configured to adjust the transmission gain of the power amplifier modules; and changes to the control signal correspond to changes to the transmission power parameter. 
     
     
       7. The multi-mode signal transmission system as disclosed in  claim 6 , wherein the compensation module is a Ramp Circuit which inputs the control signal into the power amplifier modules. 
     
     
       8. A multi-mode signal transmission method, wherein it adopts a multi-mode signal transmission system comprising a transmitter which includes a plurality of transmission modules and transmits signals through a currently used transmission module of the plurality of transmission modules;
 power amplifier modules which are connected to the transmitter and are used to receive and amplify the signals; 
 a selection device which is set between the transmitter and the power amplifier modules and selects the currently used transmission module while transmitting the signals; and 
 a compensation device having inputs connected to the plurality of transmission modules respectively and an output connected to an input of the power amplifier modules; wherein the compensation device performs a compensation to the transmission power output by the power amplifier modules according to the transmission module currently used; 
 wherein the method comprises the steps of: 
 selecting the currently used transmission module to transmit signals through the transmitter; 
 switching on a transmission route between the currently used transmission module selected by the transmitter and the power amplifier modules through the selection device; 
 performing a compensation to a transmission gain of the power amplifier modules in a preconfigured way based on the currently used transmission module selected by the transmitter through the compensation device; and 
 amplifying and outputting the signals based on the compensated transmission gain through the power amplifier modules; 
 wherein the compensation device comprises: 
 a selection module having inputs connected to the plurality of transmission modules respectively and an output coupled to the input of the power amplifier modules; wherein the selection module selects the transmission module currently used and transmits a corresponding signal according to the selected transmission module; and 
 a compensation module which is set between the selection module and the input of the power amplifier modules; wherein the compensation module receives the corresponding signal transmitted by the selection module and sends a control signal for compensation of transmission gain to the power amplifier modules. 
 
     
     
       9. The multi-mode signal transmission method as disclosed in  claim 8 , wherein the plurality of the transmission modules share the same or similar frequency band. 
     
     
       10. The multi-mode signal transmission method as disclosed in  claim 8 , wherein inputs of the selection device are connected to the plurality of transmission modules respectively, an output of the selection device is connected to the power amplifier modules; when the transmitter transmits the signals through one of the transmission modules, the selection device selects the corresponding transmission module and switches on the transmission route between the transmission module and the power amplifier modules. 
     
     
       11. The multi-mode signal transmission method as disclosed in  claim 8 , wherein the selection module comprises:
 a selection component having inputs connected to the plurality of the transmission modules respectively and an output connected to the compensation module; wherein the selection component selects the transmission module currently used and inputs a corresponding selected signal according to the selected transmission module. 
 
     
     
       12. The multi-mode signal transmission method as disclosed in  claim 11 , wherein the selected signal is a transmission power parameter output when the transmitter transmits signals through the transmission module. 
     
     
       13. The multi-mode signal transmission method as disclosed in  claim 12 , wherein the compensation module comprises a conversion component which is connected to the selection component and converts the transmission power parameter transmitted by the selection component to a control signal matching with an adjusting signal configured to adjust the transmission gain of the power amplifier modules; and wherein changes to the control signal correspond to changes to transmission power parameter. 
     
     
       14. The multi-mode signal transmission method as disclosed in  claim 13 , wherein the compensation module is a Ramp Circuit which inputs the control signal into the power amplifier modules. 
     
     
       15. The multi-mode signal transmission method as disclosed in  claim 14 , wherein the preconfigured way comprises:
 the compensation device controls the selection device to select the corresponding transmission module based on the transmission module selected by the transmitter; 
 the selection component strobes the selected transmission module and outputs the transmission power parameter to the conversion component; 
 the conversion component converts the transmission power parameter to the control signal, and the control signal is output to a matching component through the Ramp Circuit; and 
 the matching component takes the adjusting signal based on the control signal, and the matching component adjusts the transmission gain of the power amplifier modules based on the adjusting signal.