Patent ID: 11863134
Assignee: SHANGHAI VANCHIP TECHNOLOGIES CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A balanced radio frequency power amplifier, comprising: a control unit, a first driver stage unit, a 90-degree power splitter unit, a first power stage unit, a second power stage unit, and an adjustable 90-degree power combiner unit, wherein the control unit is separately connected to the first driver stage unit, the first power stage unit, the second power stage unit, and the adjustable 90-degree power combiner unit, an input end of the first driver stage unit is connected to a radio frequency signal input end, an output end of the first driver stage unit is connected to an input end of the 90-degree power splitter unit, an output end of the 90-degree power splitter unit is separately connected to input ends of the first power stage unit and the second power stage unit, output ends of the first power stage unit and the second power stage unit are separately connected to an input end of the adjustable 90-degree power combiner unit, and an output end of the adjustable 90-degree power combiner unit is connected to a radio frequency transmission path;
a switch module unit is disposed between the adjustable 90-degree power combiner unit and the radio frequency transmission path, an input end of the switch module unit is connected to the output end of the adjustable 90-degree power combiner unit, and an output end of the switch module unit is separately connected to the radio frequency transmission path and a radio frequency receiving path, the switch module unit comprises n groups of transmit/receive switches, common ends of each group of transmit/receive switches are separately connected to the output end of the adjustable 90-degree power combiner unit, one output end of the each group of transmit/receive switches is respectively connected to a corresponding radio frequency transmission path, and the other output end of the each group of transmit/receive switches is respectively connected to a corresponding radio frequency receiving path; and
a radio frequency input signal is inputted to the 90-degree power splitter unit after being amplified by the first driver stage unit, and the 90-degree power splitter unit divides the radio frequency input signal into two equal-amplitude radio frequency input signals that have a phase difference of 90 degrees, correspondingly inputs the two equal-amplitude radio frequency input signals to the first power stage unit and the second power stage unit to amplify, inputs the two equal-amplitude radio frequency input signals to the adjustable 90-degree power combiner unit, and controls the adjustable 90-degree power combiner unit by using the control unit, so that when the two equal-amplitude radio frequency input signals at different frequencies have a minimum phase difference and a minimum amplitude difference, the two radio frequency input signals are synthesized into one radio frequency input signal to be inputted to the radio frequency transmission path.