| 摘要 |
FIELD: physics. ^ SUBSTANCE: IQ-modulator pre-distortion device includes two digital filters for compensating for IQ-modulator generated amplitude errors and filtering intermodulation from quadrature to the inphase component of the signal, a first shift compensator for compensating for shift errors of the inphase signal component and a second shift compensator for compensating for shift errors of the quadrature signal component, two iteratively updated digital filters (gQ0, gQ1, gl0, gl1) for filtering each branch of the IQ-signal to compensate for IQ-modulator generated amplitude errors in each branch. ^ EFFECT: compensation for amplitude and phase errors. ^ 12 cl, 8 dwg |
