摘要 |
The present invention relates to a polar signal generator and method of deriving phase and amplitude components from in-phase (I) and quadrature-phase (Q) components of an input signal, wherein the I and Q components are generated at a first sampling frequency based on the input signal, and are then up-sampled in accordance with a predetermined first interpolation factor (N), to generate up-sampled I and Q components at a second sampling frequency higher than the first sampling frequency. The up-sampled I and Q components are converted into the phase and amplitude components, wherein the converting step is operated at the second sampling frequency. Moreover, the phase and amplitude components can be further up-sampled, optionally by different sampling frequencies, to a third and a fourth sampling frequency. Thereby, I-Q generation and cartesian-to -polar transformation can be performed at lower frequencies, which reduces power consumption. |
申请人 |
NXP B.V.;COLLADOS ASENSIO, MANEL;PAVLOVIC, NENAD;VIDOJKOVIC, VOJKAN;VAN ZEIJL, PAULUS, T., M. |
发明人 |
COLLADOS ASENSIO, MANEL;PAVLOVIC, NENAD;VIDOJKOVIC, VOJKAN;VAN ZEIJL, PAULUS, T., M. |