Patent ID: 8213927
Filing Date: 2012-07-03
Classification: H04B,H04W

Abstract:
1. A mobile phone adapted to calibrate maximum output power using a base station tester in a test mode and a microwave chamber in an operation mode, the mobile phone comprising: a front end circuit comprising a power amplifier, a coupler, a duplexer and an antenna; a central processing unit (CPU) to receive output power of the mobile phone measured from the base station tester; a power detector to detect power output from the power amplifier via the coupler and converts the power to voltage to transmit to the CPU; a radio frequency (RF) chip to transceive RF signals via the front end circuit; a testing connector; a high voltage circuit connected to the testing connector, to provide a high voltage signal continuously; and a detection circuit connected between the testing connector and the CPU, to determine connection status of the base station tester and the testing connector and output the high voltage signal to the CPU according to the connection status; wherein the CPU determines a mode of the mobile phone based on the output of the detection circuit, and provides a maximum output power according to a test mode maximum output power calibration table or an operation mode maximum output power calibration table.