Patent ID: 6892056
Filing Date: 2005-05-10
Classification: H04B

Abstract:
1. A mobile device with duplex antenna amplification comprising a mobile station ( 1 ), a duplex antenna amplifier ( 7 ) both linked by a communication line and an antenna ( 16 ) connected to the duplex antenna amplifier ( 7 ), wherein the mobile station ( 1 ) comprises a controller ( 2 ) whose inputs/outputs are joined with the outputs/inputs of a transmitter ( 3 ) and receiver ( 4 ); the control output of the controller ( 2 ) is linked to the control input of a transmitter ( 3 ); the output of the transmitter ( 3 ) is connected to the input of a first filter ( 5 ) whose output is coupled to the output/input of the mobile station ( 1 ), the input/output of the mobile station ( 1 ) is connected to the input of a second filter ( 6 ) whose output is linked to the input of the receiver ( 4 ); the duplex antenna amplifier ( 7 ) comprises successively linked a first diplexer ( 8 ), composed of third and fourth filters ( 9 , 10 ), a first amplifier ( 11 ), a second diplexer ( 13 ), composed of fifth and sixth filters ( 14 , 15 ), a second amplifier ( 12 ), the output of which is connected to the input of the first diplexer ( 8 ); the output/input of the second diplexer ( 13 ) is linked to the second input/output of the duplex antenna amplifier ( 7 ); the input/output of the first diplexer ( 8 ) is connected to the first input/output of the duplex antenna amplifier ( 7 ), characterizing in that the mobile station ( 1 ) is added with successively linked a first controllable power source ( 17 ) and a first low pass filter ( 18 ) (LPF); the input of the first controllable power source ( 17 ) is combined with the input of the transmitter ( 3 ) control and linked to the control output of the controller ( 2 ); the output of the first LPF ( 18 ) is joined with the output/input of the mobile station ( 1 ); the duplex antenna amplifier ( 7 ) is added with successively linked a second LPF ( 19 ) and second controllable power source ( 21 ), successively linked a third LPF ( 20 ) and stabilizer ( 22 ); the first input/output of the duplex antenna amplifier ( 7 ) is connected to the inputs of the second and third LPFs ( 19 , 20 ); the output of the second controllable power source ( 21 ) is combined with the second input of the first amplifier ( 11 ); the output of the stabilizer ( 22 ) is joined with the second input of the second amplifier ( 12 ).