A METHOD AND A APPARATUS OF IMPROVEMENT EFFICIENCY ON POWER AMPLIFIER WITH LOW CURRENT CONSUMPTION FOR MOBILE PHONE

摘要

The invention according to the power amplifier by controlling the impedance matching of the wireless terminal to the output power level of the power consumption reduced by improving the efficiency of a power amplifier for inputting the high-frequency signal, and an output amplifier for mobile communication power to set the desired level; Input matching unit and an output signal of the power amplifier and outputting an impedance matching to set up for a maximum efficiency condition; Connected to the matching unit, and pin diode unit for setting a conduction state by the bias voltage; Variable portion connected to the pin diode unit and adjusts the impedance by the control signal; When detecting the output power amplifier sections set reference level or more, the control unit for outputting a high level of the control signal; Characterized by a configuration consisting of a duplexer that includes the removal of the unnecessary high-frequency output signal of the high frequency signal outputted from the matching unit to the impedance matching condition, and further, the process of detecting the power level output from the power amplifier by the control section of the portable terminal; When the linear outputting the detected output power is more than the reference level of the high level control signal; Outputs a control signal of a low level when the detected output power is less than the reference level and characterized in that said step of determining whether or not to continue with the efficiency, reduce the overall power consumption of the wireless terminal use a current to increase the efficient use of time because the rear has the effect of improving the reliability.