SYSTEM FOR THE CORRECTION OF AMPLITUDE AND PHASE ERRORS OF IN-QUADRATURE SIGNALS, CORRESPONDING RECEIVER AND METHOD
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Abstract
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.
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Citations
33 Claims
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1-12. -12. (canceled)
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13. A system for correction of phase and amplitude errors, the system comprising:
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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, and multiply 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; the third coefficient of said second adder configured to enable correction of the amplitude errors. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A receiver system comprising:
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a receiver circuit; and an error correction circuit coupled to said receiver circuit and for phase and amplitude correction, the error correction circuit 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, and multiply 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; the third coefficient of said second adder configured to enable correction of the amplitude errors. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A method for correction of phase and amplitude errors, the method comprising:
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operating each of first and second adders 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, and multiply the weighted sum by a third coefficient; setting at least one of the first coefficient and the second coefficient of the first adder to enable correction of the phase errors; and setting the third coefficient of the second adder to enable correction of the amplitude errors. - View Dependent Claims (29, 30, 31, 32, 33)
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Specification