On-chip I-Q imbalance and LO leakage calibration for transceivers

摘要

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.

主权项

1. A method, comprising:
looping back a first signal to a first receiver; bypassing one of a first path and a second path of the first receiver; processing the first signal to form a second signal; injecting a third signal to a second receiver, the third signal being generated based on at least one of the second signal and a fourth signal.