DEVICE FOR CONTROLLING AN OUTPUT OF A HIGH-POWER AMPLIFIER IN A MOBILE COMMUNICATION TERMINAL, SPECIFICALLY CONCERNED WITH COMPENSATING FOR A TRANSMISSION OUTPUT BY DETECTING AN OUTPUT LEVEL OF THE HIGH-POWER AMPLIFIER

摘要

PURPOSE: A device for controlling an output of a high-power amplifier in a mobile communication terminal is provided to compensate for a transmission output by detecting an output level of a high-power amplifier, thereby preventing a call disconnection caused by the deterioration of a transmission output level while suppressing power consumption caused by an excessive output. CONSTITUTION: An output level detector(270) detects an output level of a high-power amplifier(232). A logic unit(260) consists of a memory(261) for storing preset fixed data to compare with the detected output level and a register(262) for storing a control command for output gain controlling. A gain controller(280) comprises as follows. FETs for a switch use receive control signals of the logic unit(260) as each input to control an output gain of the high-power amplifier(232), and wherein a reference voltage is applied to commonly connected sources. A plurality of power dividing resistances supply driving voltages to the FETs by dividing the reference voltage, and control an output level of the control signal.