| 摘要 |
The invention relates to a polar transmission apparatus having a polar transformer for transformation of a baseband signal to an amplitude signal and a phase signal. The apparatus includes a frequency synthesizer for production of a radio-frequency signal from the phase signal, having a modulator for amplitude modulation of the radio-frequency signal. The modulation is selectively carried out either by a mixer mixing the radio-frequency signal with the amplitude signal or by an amplifier amplifying the radio-frequency signal and modulating the gain with the amplitude signal.
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