Power calibrating method suitable for multiple signal bandwidth

The invention discloses a power calibration method suitable for various signal bandwidths, which comprises the following steps: a signal bandwidth BW using a calibrating signal source is chosen; the signal of the BW bandwidth is used as a unit, and a STEP is used as the step to scan the whole frequency band to obtain the calibration data; the calibration value of the needed bandwidth is determined according to the obtained calibration data, and the power is calibrated according to the calibration value. After the invention is adopted, hardware does not need to be recovered to a factory for the recalibration and can be upgraded when supporting different applications, the purpose of one hardware platform supporting different applications is achieved, thereby the transportation cost is savedand the upgrading period is shortened, and the upgrading efficiency is improved.