System for the correction of amplitude and phase errors of in-quadrature signals, corresponding receiver and method

摘要

A system may be for the correction of phase and amplitude errors. The system may receive a first input signal and a second input signal and supply a first output signal and a second output signal. The system may include two adders that supply the first and second output signals, respectively. The two adders may be configured for computing a sum of the first and second input signals, and multiplying the weighted sum by a third coefficient. Moreover, the first coefficient or the second coefficient of the first adder may be variable to enable correction of the phase errors, and the third coefficient of the second adder may be variable to enable correction of the amplitude errors.

主权项

1. A system for correction of phase and amplitude errors, the system comprising:
first and second adders each configured to
supply, respectively, a first output signal and a second output signal,compute a sum of a first input signal and a second input signal, the sum being weighted via a respective first coefficient and a respective second coefficient, andmultiply the weighted sum by a third coefficient; at least one of the first coefficient and the second coefficient of said first adder configured to enable correction of the phase errors using variable phase shift in terms of phase correction and a fixed amplitude correction; the third coefficient of said second adder configured to enable correction of the amplitude errors with a fixed phase shift in terms of phase correction and a variable amplitude correction.