| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication apparatus that implements improved transmission power characteristics or reduced resources required to improve transmission power characteristics.SOLUTION: The radio communication apparatus includes, for example, a bias detection circuit SENS for detecting a bias supplied to a high frequency power amplifier HPA; an error amplifier EAb for amplifying an error between the detection result and a predetermined reference voltage Vref; and a correction circuit CC for searching for a bit correction value &Dgr;BC that minimizes the error detected by EAb. During a normal operation, a digital-analog conversion circuit DAC receives a bias instruction code VBCD from a baseband unit BBU, and reflects &Dgr;BC in VBCD for outputting a bias setting voltage Vb, so that a corresponding bias is supplied to HPA. |
