| 摘要 |
The invention relates to an emission device, especially for mobile telephony, comprising a quadrature modulator (1) and a compensation path (4) for compensating the modulator in terms of the suppression of the vestigial sideband and the carrier. To this end, compensation means (7, 15) are controlled according to intermodulation products which are generated at the output of a non-linear component (6) which is connected to the output of the quadrature modulator (1), in such a way that fractions of the first frequency (f1) of the input signal of the quadrature modulator (1) or fractions of the double first frequency (2f1) are minimised. To this end, the compensation means (7, 15) comprise means for influencing the identical fraction of the signal in addition to the amplitude and phase position of the signal. |
