| 摘要 |
<p>A gain compensating apparatus for use with an amplifying portion corresponding to code division multiple access system is disclosed, that comprises a spreading/combining portion for outputting amplitude data that has been spread and quantized and transmission average value information, a D/A converting portion for outputting an analog base band signal, a modulating portion for outputting a modulation signal, a variable ATT portion for controlling the attenuation amount with a control signal and controlling the level of the modulation signal, an amplifying portion for amplifying a power, a HYB for branching an output signal of the amplifying portion, one output signal of the HYB being a transmission signal, a detecting portion for detecting an output signal of the HYB and outputting a detected signal, an A/D converting portion for converting the detected signal into quantized transmission power data, and a comparing/controlling portion for comparing the transmission power data with the transmission average value information, outputting data for compensating the difference, and controlling the variable ATT portion. <IMAGE></p> |
