The present invention relates to a wireless transmission apparatus. The wireless transmission apparatus is used for transmitting a RF signal by a selected power allocation to meet the requirement of specific transmission standard. The wireless transmission apparatus comprises a memory, a processor and a power data converting module. The memory is used for storing a plurality of predetermined original power data profiles. Each original power data profile comprises a plurality of predetermined first original power ramp data and a corresponding power allocation for transmitting the RF signal. The processor is used for controlling the data flow. The power data converting module converts the data of original power data profile to a corresponding data of transmission power data profile. The power data converting module comprises an interpolation adjusting unit for adjusting and increasing the plurality of predetermined first original power ramp data within each original power data profile to a plurality of second transmission power ramp data with a predetermined interpolating method. The plurality of second transmission power ramp data are more than and comprise the plurality of first original power ramp data. The wireless transmission apparatus further comprises a power amplifier for transmitting the RF signal according to the power allocation defined by the plurality of second transmission power ramp data.