公开(公告)号：US20250070731A1

公开(公告)日：2025-02-27

申请号：US18941540

申请日：2024-11-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yiping SUN ,  Chuan HE ,  Jie SUN

IPC: H03F3/24 ,  H03F1/32 ,  H03F1/56

Abstract: A power amplifier circuit includes a power amplifier unit and a broadband improvement unit. The power amplifier unit includes a signal input port, a signal output port, a power transistor, and a first inductor. The power transistor is configured to perform power amplification on radio frequency signals in a plurality of frequency bands. The broadband improvement unit adjusts a parallel resonance frequency of the power amplifier unit, to reduce envelope impedance of the power amplifier unit between a first target frequency and a second target frequency. The first target frequency is a maximum frequency difference between the plurality of frequency bands, and the second target frequency is a minimum frequency difference between the plurality of frequency bands.