Patent ID: 7123932
Filing Date: 2006-10-17
Classification: H04W

Abstract:
1. An apparatus for stabilizing a transmission power of a code division multiple access mobile communication terminal, comprising: a control section for determining a transmission power according to a received electric field strength, and outputting a reference power according to the determined transmission power; an automatic gain amplifier for amplifying an inputted transmission signal with an automatic gain control value, and outputting the amplified transmission signal; a power amplifier for power-amplifying the transmission signal inputted from the automatic gain amplifier, and outputting a final transmission signal; a current sensing device for detecting a consumed current during power amplification of the power amplifier, and outputting a sensed signal if the detected current exceeds a predetermined current value; a transmission power detector for detecting and outputting a transmission power of the final transmission signal; a switch receiving the transmission power and outputting the transmission power inputted from the transmission power detector if the sensed signal is output from the current sensing device; and a gain controller for comparing the transmission power with the reference power inputted from the control section and generating the automatic gain control value in proportion to a compared value if the transmission power is inputted from the switch, and applying the automatic gain control value in proportion to the reference power if the transmission power is not inputted from the switch.