Apparatus and method for i/q mismatch calibration
AssigneeElectronics and Telecommunications Research Institute
InventorsHyun Kyu Yu, Mun Yang Park, Jae Hoon Shim
Life of this patent
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Abstract
There is provided an apparatus and method for In-phase/Quadrature-phase (I/Q) mismatch calibration. The apparatus includes: a symmetrical point extracting part receiving continuous wave signals and extracting an I/Q channel average locus of the continuous wave signals; an error extracting part extracting a degree of distortion of the continuous wave signals from the extracted I/Q channel average locus; and a calibrating part calibrating a mismatch between I-channel signals and Q-channel signals of the continuous wave signals using the degree of distortion of the continuous wave signals.
Claims14
An In-phase/Quadrature-phase (I/Q) mismatch calibration apparatus comprising:
- a symmetrical point extracting part receiving continuous wave signals to extract an I/Q channel average locus of the continuous wave signals;
- an error extracting part extracting a degree of distortion of the continuous wave signals from the I/Q channel average locus extracted through the symmetrical point extracting part;
- and
- a calibrating part calibrating a mismatch between I-channel signals and Q-channel signals of the continuous wave signals using the degree of distortion of the continuous wave signals.
A method of calibrating an In-phase/Quadrature-phase (I/Q) mismatch, the method comprising:
- receiving continuous wave signals to extract an I/Q channel average locus of the continuous wave signals;
- extracting a degree of distortion of the continuous wave signals from the I/Q channel average locus;
- and
- calibrating a mismatch between I-channel signals and Q-channel signals of the continuous wave signals using the degree of distortion of the continuous wave signals.
Dependencies are inferred from the claim text.