| 摘要 |
A hybrid polar I-Q transmitter includes an I-Q derivation circuit configured to receive a first and second I-Q data components comprising a first I-Q data pair, generate a first and second I-Q derived data components comprising a second I-Q data pair, respectively, based thereon, by utilizing a resolution information of a digital-to-analog converter (DAC) and a design criteria. The I-Q derivation circuit is further configured to determine a residual angle corresponding to a phase angle difference between the first I-Q pair and the second I-Q pair. Each I-Q data pair corresponds to a point in an I-Q constellation diagram and the first I-Q data pair defines a first phasor having a first radius and a first phase angle associated therewith and the second I-Q data pair defines a second phasor having a second radius and a second phase angle associated therewith. The hybrid polar I-Q transmitter further comprises a modulation circuit configured to compensate the determined phase angle difference in the I-Q derivation circuit. |
