Patent ID: 8873610

Claim:
A method for determining gain and/or phase imbalance of a signal generation system and/or a signal digitizing system, the method comprising: (a) after a first output and a second output of the signal generation system has been connected respectively to a first input and a second input of the signal digitizing system using respectively a first electrical conductor and a second electrical conductor, directing the signal generation system to generate a first vector calibration signal and to transmit a first vector output signal via the first output and the second output based on the first vector calibration signal, and directing the signal digitizing system to capture a first set of vector samples from the first input and second input in response to the transmission of the first vector output signal; (b) after the first output and the second output of the signal generation system have been connected respectively to the second input and the first input of the signal digitizing system using the first and second electrical conductors, directing the signal generation system to generate a second vector calibration signal and transmit a second vector output signal based on the second vector calibration signal, and directing the signal digitizing system to capture a second set of vector samples from the first input and second input in response to the transmission of the second vector output signal; (c) computing a measurement of gain and/or phase imbalance of the signal generation system and/or a measurement of gain and/or phase imbalance of the signal digitizing system based on input data including the first set of vector samples and the second set of vector samples.