公开(公告)号：US10326482B2

公开(公告)日：2019-06-18

申请号：US16003623

申请日：2018-06-08

Applicant: STMicroelectronics (Alps) SAS

Inventor： Herve Jacob

IPC: H04K1/02 ,  H04B1/04 ,  H03F1/22 ,  H03F1/32 ,  H03F3/195 ,  H03F3/24 ,  H03F3/45

Abstract: A transmission chain receives an incident signal to be transmitted having a first power and a first bandwidth. A first modulator frequency shifts a first signal derived from the incident signal to generate a first shifted signal at a modulation output. A power amplifier coupled to the modulation output amplifies an intermediate signal to generate an amplified output signal. A predistortion-signal-generating circuit generates, from the incident signal and from the amplified output signal in a second bandwidth that is larger than the first bandwidth, a predistortion signal having a second power lower than the first power. A second modulator frequency shifts a second signal derived from the predistortion signal to generate a second shifted signal for combination with the first shifted signal at said modulation output to produce the intermediate signal.