公开(公告)号：US20240088840A1

公开(公告)日：2024-03-14

申请号：US18359458

申请日：2023-07-26

Applicant: Apple Inc.

Inventor： Christian Tanzer ,  Julian Zuber ,  Matthias Voelkel ,  Dominic Koehler ,  Harald Pretl ,  Joonhoi Hur ,  Rastislav Vazny

IPC: H03F3/19

CPC classification number: H03F3/19 ,  H03F2200/294 ,  H03F2200/451

Abstract: An electronic device may include wireless circuitry with a processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry may operation in different modes based on its operating environment. Accordingly, the amplifier circuitry may include multiple amplifying cascode stages coupled in parallel, some of which may be selectively enabled. The amplifier circuitry may include an intermodulation distortion suppression circuit coupled to an amplifying cascode stage and an n-path filter coupled to another amplifying cascode stage. One or more of these amplifier circuitry portions may be active depending on its operating mode.