公开(公告)号：US20230082905A1

公开(公告)日：2023-03-16

申请号：US17800290

申请日：2021-02-15

Applicant: STMicroelectronics International N.V.

Inventor： Herve Guegnaud ,  Stephanie Venec ,  Guillaume Blamon

IPC: H03F1/52 ,  H03F3/24

Abstract: According to one aspect, an integrated circuit includes a power amplifier having a succession of at least two amplifier stages. The two amplifier stages include a first amplifier stage configured to receive a radio frequency signal as input and a last amplifier stage configured to deliver as an output of an amplified radio frequency signal. The power amplifier further includes a safety circuit with a control circuit configured to compare the amplified radio frequency signal voltage with a threshold voltage. The safety circuit further comprises a gain reduction circuit configured to reduce a bias voltage of an upstream amplifier stage of the last amplifier stage when the amplified radio frequency signal voltage is greater than the threshold voltage.

公开(公告)号：US20230129447A1

公开(公告)日：2023-04-27

申请号：US17800277

申请日：2021-02-15

Applicant: STMicroelectronics International N.V.

Inventor： Guillaume Blamon ,  Emmanuel Picard ,  Christophe Boyavalle

IPC: H03H7/38 ,  H03H7/01 ,  H03F3/24 ,  H03F1/56

Abstract: The integrated circuit includes a power amplifier intended to provide a signal in a fundamental frequency band, an antenna, and a matching and filtering network having a first section, a second section, and a third section. The three sections include LC arrangements configured to have an impedance matched to the power amplifier's output in the fundamental frequency band. The LC arrangements of the first section and the second section are configured to have resonant frequencies adapted to attenuate the harmonic frequency bands of the fundamental frequency band.

公开(公告)号：US20230083695A1

公开(公告)日：2023-03-16

申请号：US17800282

申请日：2021-02-15

Applicant: STMicroelectronics International N.V.

Inventor： Guillaume Blamon ,  Emmanuel Picard ,  Christophe Boyavalle

IPC: H03H7/01 ,  H03F3/24 ,  H03F1/56

Abstract: The integrated circuit includes a power amplifier, an antenna, and a matching and filtering network including a direct current power supply stage on an output node of the power amplifier, a first section, and a second section. The direct current power supply stage and the two sections include inductor-capacitor “LC” arrangements configured to have an impedance that is matched to the output of the power amplifier in the fundamental frequency band. The LC arrangements of the direct current power supply stage and of the first section are furthermore configured to have resonant frequencies that are respectively adapted to attenuate harmonic frequency bands of the fundamental frequency band.