| 摘要 |
The RFDAC includes: a multi-phase radio-frequency signal generator configured to generate radio-frequency signals that are different in phase; a vector selector configured to select two radio-frequency signals therefrom, cause each of the two radio-frequency signals to pass through at least one transmission path, combine the two radio-frequency signals; a test signal generator configured to output a test signal; a multiplexer configured to select either the test signal or the baseband signal; a vector controller configured to control the vector selector based on the selected signal and a predetermined selection pattern such that the two radio-frequency signals, and transmission paths thereof are selected; a detector configured to detect an output signal from the vector selector; and a calibrator configured to calibrate a phase error between the selected two radio-frequency signals, based on an envelope of the output signal.
|
