Invention Grant
US08559488B1 On-chip IQ imbalance and LO leakage calibration for transceivers 有权
用于收发器的片上IQ不平衡和LO泄漏校准

On-chip IQ imbalance and LO leakage calibration for transceivers
Abstract:
The disclosure can provide methods and systems for autocalibrating a transceiver. The method can include upconverting a bandpass input signal by mixing the bandpass input signal with a first local oscillator signal to form an initial transmitter signal. The initial transmitter signal can be looped back to a receiver and downconverted with a second local oscillator signal having a frequency that is different from the first local oscillator to form an intermediate frequency signal. At least one of a gain and a phase of the transmitter can be adjusted based on a transmitter image sideband of the intermediate frequency signal to generate a calibrated transmitter signal having minimized transmitter image sideband.
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