polar transmitter circuit and dual linearly

摘要

A method for upconverting a signal baseband comprising: in a linear mode, mix a baseband signal in-phase (BB I) signal with a local oscillator in-phase (LO I) using a primary mixer; in linear mode, mix a baseband signal quadrature (BB Q) with an oscillator signal localen quadrature (LO Q) using a secondary mixer; in the linear mode, combining the outputs of the primary and secondary mixers to generate a señalconvertida upstream; yen a polar mode, mix a baseband signal amplitude band (BB) with an oscillator signal phase localmodulada (LO) using the primary mixer.