公开(公告)号：WO2022271407A1

公开(公告)日：2022-12-29

申请号：PCT/US2022/031204

申请日：2022-05-26

Applicant: QUALCOMM INCORPORATED

Inventor： GOLDBLATT, Jeremy ,  BALASUBRAMANIYAN, Arul ,  MISHRA, Chinmaya ,  CAO, Damin ,  ASURI, Bhushan, Shanti

IPC: H03F1/52 ,  H03F3/24 ,  H03F3/45 ,  H03F3/191 ,  H03F3/21 ,  H03G3/30 ,  H04B17/00 ,  H03F3/68 ,  G01R19/04 ,  H03F1/0238 ,  H03F1/523 ,  H03F2200/435 ,  H03F2200/451 ,  H03F2200/474 ,  H03F2203/211 ,  H03F2203/21127 ,  H03F2203/45054 ,  H03F2203/45182 ,  H03F2203/45674 ,  H03F2203/45676 ,  H03F3/195 ,  H03F3/211 ,  H03F3/245 ,  H03F3/45188 ,  H03F3/45475 ,  H03G2201/103 ,  H03G2201/206 ,  H03G3/3042 ,  H04B1/0475 ,  H04B2001/0416

Abstract: A peak detector for a power amplifier is provided that includes a threshold voltage detector configured to pulse a detection current in response to an amplified output signal from the amplifier exceeding a peak threshold. A plurality of such peak detectors may be integrated with a corresponding plurality of power amplifiers in a transmitter. Should any peak detector assert an alarm signal or more than a threshold number of alarm signals during a given period, a controller reduces a gain for the plurality of power amplifiers.