Calibration circuit and calibration method of wireless transceiver

Abstract

A calibration circuit and a calibration method for a wireless transceiver are provided. The wireless transceiver includes a transmission path and a reception path, and the transmission path includes a radio frequency (RF) circuit and a baseband amplifier. The calibration method includes the following steps: setting a target gain of the RF circuit according to a first gain setting value; receiving a first input signal through a coupling path and the reception path; measuring first power of the first input signal; setting the target gain of the RF circuit according to a second gain setting value; receiving a second input signal through the coupling path and the reception path; measuring second power of the second input signal; calculating a power difference between the first power and the second power; and adjusting at least one of the baseband amplifier and a digital circuit according to the power difference.

Dependencies are inferred from the claim text.