公开(公告)号：US20180062592A1

公开(公告)日：2018-03-01

申请号：US15441500

申请日：2017-02-24

Applicant: QUALCOMM Incorporated

Inventor： Marco CASSIA ,  Jose CABANILLAS

IPC: H03F3/217 ,  H03F3/19 ,  H03F1/56

CPC classification number: H03F3/217 ,  H03F1/0277 ,  H03F1/0288 ,  H03F1/56 ,  H03F1/565 ,  H03F3/19 ,  H03F3/211 ,  H03F3/2171 ,  H03F3/2173 ,  H03F3/72 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/408 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2203/21103 ,  H03F2203/21136 ,  H03F2203/21139 ,  H03F2203/21175 ,  H03F2203/7215 ,  H03F2203/7221 ,  H03F2203/7236 ,  H03G1/00 ,  H03G1/0088 ,  H03G3/3042 ,  H03G2201/504 ,  H03G2201/506 ,  H04B1/40 ,  H04B1/401

Abstract: A power amplifier circuit, including: an input node configured to receive a radio frequency (RF) signal; an output node configured to output an amplified RF signal; a main path switchably coupled between the input node and the output node, and including a first plurality of amplification stages to generate a first amplified RF signal; a bypass path switchably coupled between the input node and the output node, and including at least one second amplification stage to generate a second amplified RF signal; and a coupling switch configured to reuse at least a portion of the bypass path to drive the main path to generate a third amplified RF signal.

公开(公告)号：US20240039480A1

公开(公告)日：2024-02-01

申请号：US18483877

申请日：2023-10-10

Applicant: QUALCOMM Incorporated

Inventor： Xiangdong ZHANG ,  Ryan Scott Castro SPRING ,  Marco CASSIA ,  Yan Kit Gary HAU ,  Kanan GANDHI ,  Robert WILSON

IPC: H03F1/02 ,  H03F3/195

CPC classification number: H03F1/0227 ,  H03F3/195 ,  H03F2200/451

Abstract: An apparatus is disclosed for waveform-tailored average power tracking. In an example aspect, the apparatus includes an amplifier, a power converter, and an average power tracking module. The amplifier is configured to amplify radio-frequency signals using a supply voltage. The radio-frequency signals have different waveforms. The power converter is coupled to the amplifier and configured to provide the supply voltage. The average power tracking module is coupled to the power converter and configured to adjust the supply voltage according to the different waveforms to cause the supply voltage to vary across at least two waveforms of the different waveforms for related average output powers.

公开(公告)号：US20230412130A1

公开(公告)日：2023-12-21

申请号：US17808040

申请日：2022-06-21

Applicant: QUALCOMM Incorporated

Inventor： Marco CASSIA ,  Jose CABANILLAS

IPC: H03F3/24 ,  H03F3/195 ,  H04B1/04 ,  H03F1/56 ,  H03F1/52

CPC classification number: H03F3/245 ,  H03F3/195 ,  H04B1/0458 ,  H03F1/56 ,  H03F1/52 ,  H03F2200/451 ,  H04B2001/0408 ,  H03F2200/471

Abstract: Methods and apparatus for providing amplifier protection for a radio frequency (RF) front-end circuit. An example RF front-end circuit generally includes an amplifier with a gain, a first sensor configured to sense a first power (or voltage) of a first node coupled to an input of the amplifier, a second sensor configured to sense a second power (or voltage) of a second node coupled to an output of the amplifier, and logic coupled to the first and second sensors. The logic is generally configured to determine that the second power (or voltage) is outside a range based on the gain and the first power (or voltage) and to take an action to protect the amplifier based on the determination. By utilizing the techniques and apparatus described herein, protection can be provided to the amplifier(s) in an RF front-end circuit without significantly impacting the performance of the RF front-end circuit.