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公开(公告)号：US20210384880A1
公开(公告)日：2021-12-09
申请号：US17305111
申请日：2021-06-30
Applicant: Skyworks Solutions, Inc.
Inventor： Yu-Jui Lin , Wei Zhang , David Steven Ripley , Vignesh Sridharan
Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.
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Patent Agency Ranking
公开(公告)号：US20200336122A1
公开(公告)日：2020-10-22
申请号：US16802935
申请日：2020-02-27
Applicant: Skyworks Solutions, Inc.
Inventor： Yu-Jui Lin , Wei Zhang , David Steven Ripley , Vignesh Sridharan
Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.
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公开(公告)号：US11082021B2
公开(公告)日：2021-08-03
申请号：US16802935
申请日：2020-02-27
Applicant: Skyworks Solutions, Inc.
Inventor： Yu-Jui Lin , Wei Zhang , David Steven Ripley , Vignesh Sridharan
Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.
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公开(公告)号：US20230299732A1
公开(公告)日：2023-09-21
申请号：US18324585
申请日：2023-05-26
Applicant: Skyworks Solutions, Inc.
Inventor： Yu-Jui Lin , Wei Zhang , David Steven Ripley , Vignesh Sridharan
CPC classification number: H03G3/3042 , H03F3/245 , H03F1/0233 , H04B1/40 , H03G2201/307 , H03F2200/105 , H03F2200/451 , H03G2201/103
Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.
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公开(公告)号：US11705877B2
公开(公告)日：2023-07-18
申请号：US17305111
申请日：2021-06-30
Applicant: Skyworks Solutions, Inc.
Inventor： Yu-Jui Lin , Wei Zhang , David Steven Ripley , Vignesh Sridharan
CPC classification number: H03G3/3042 , H03F1/0233 , H03F3/245 , H04B1/40 , H03F2200/105 , H03F2200/451 , H03G2201/103 , H03G2201/307
Abstract: Envelope tracking power amplifiers with advanced gain shaping are provided. In certain implementations, a power amplifier system includes a power amplifier that amplifies a radio frequency (RF) signal and an envelope tracker that controls a voltage level of a supply voltage of the power amplifier based on an envelope of the RF signal. The power amplifier system further includes a gain shaping circuit that generates a gain shaping current that changes with the voltage level of the supply voltage from the envelope tracker. For example, the gain shaping circuit can include an analog look-up table (LUT) mapping a particular voltage level of the supply voltage to a particular current level of gain shaping current. Additionally, the gain shaping circuit biases the power amplifier based on the gain shaping current.
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公开(公告)号：US20230124129A1
公开(公告)日：2023-04-20
申请号：US17965259
申请日：2022-10-13
Applicant: SKYWORKS SOLUTIONS, INC.
Inventor： Yu-Jui Lin , Anise Muhammed Azizad , Vignesh Sridharan
IPC: H03F3/24
Abstract: Examples of the disclosure include an output stage circuit assembly for a power amplifier system, the output stage circuit assembly comprising a plurality of output stage amplifiers connected in parallel to each other, each output stage amplifier of the plurality of output stage amplifiers configured to amplify an input signal of the output stage circuit assembly when turned on, and a controller configured to determine a number of output stage amplifiers to be turned off based on at least one of a voltage supplying mode for the power amplifier system or a power management mode of a device in which the power amplifier system is embedded, and to control the plurality of output stage amplifiers to be turned on or off according to the determined number of output stage amplifiers to be turned off.
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