Signal transceiver device and calibration method thereof

A signal transceiver device, comprising:

• a transceiver circuit comprising a transmitter and a receiver, the transmitter comprising a first in-phase signal baseband path and a first quadrature signal baseband path, and the receiver comprising a second in-phase signal baseband path and a second quadrature signal baseband path;
• a compensation circuit configured to generate a plurality of first compensation coefficients and a plurality of second compensation coefficients according to a first analyzed result and a second analyzed result that are associated with an output of the receiver, wherein each of the first analyzed result and the second analyzed result is associated with the transmitter and the receiver,
• the compensation circuit configured to obtain the first analyzed result if the first in-phase signal baseband path is coupled to the second in-phase signal baseband path, and the first quadrature signal baseband path is coupled to the second quadrature signal baseband path, and the compensation circuit to obtain the second analyzed result if the first in-phase signal baseband path is coupled to the second quadrature signal baseband path, and if the first quadrature signal baseband path is coupled to the second in-phase signal baseband path;
• and
• a calibration circuit configured to calibrate a mismatch between the first in-phase signal baseband path and the first quadrature signal baseband path, and to calibrate a mismatch between the second in-phase signal baseband path and the second quadrature signal baseband path.

A calibration method, comprising:

• coupling, by a switching circuit, a transmitter to a receiver, wherein the switching circuit having a first configuration and a second configuration, wherein the second configuration is that a first quadrature signal baseband path of the receiver is coupled to a first in-phase signal baseband path of the transmitter via the switching circuit, wherein the first configuration is that a second quadrature signal baseband path of the transmitter is coupled to the first quadrature signal baseband path of the receiver via the switching circuit;
• analyzing an output of the receiver to obtain a first analyzed result and a second analyzed result, wherein the first analyzed result corresponds to the first configuration, and the second analyzed result corresponds to the second configuration;
• and
• generating a plurality of first compensation coefficients and a plurality of second compensation coefficients according to the first analyzed result and the second analyzed result, in order to calibrate the transmitter and the receiver, respectively, wherein each of the first analyzed result and the second analyzed result is associated with the transmitter and the receiver.