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公开(公告)号：US12199576B2
公开(公告)日：2025-01-14
申请号：US17580128
申请日：2022-01-20
Applicant: Apple Inc.
Inventor： Nitesh Singhal , Mark G. Forbes
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more radio-frequency amplifiers for amplifying a radio-frequency signal. The radio-frequency amplifier may include input transistors cross-coupled with capacitance neutralization transistors and/or coupled to cascode transistors. One or more n-type gain adjustment transistors may be coupled to source terminals of the capacitance neutralization transistors. One or more p-type gain adjustment transistors may be coupled to source terminals of the cascode transistors. One or more processors in the electronic device can selectively activate one or more of the gain adjustment transistors to reduce the gain of the radio-frequency amplifier without degrading noise performance and without altering the in-band frequency response of the radio-frequency amplifier.
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公开(公告)号：US20230421122A1
公开(公告)日：2023-12-28
申请号：US18465910
申请日：2023-09-12
Applicant: Apple Inc.
Inventor： Nitesh Singhal
CPC classification number: H03F3/245 , H04B1/40 , H03F2200/451
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. Radio-frequency power amplifier circuitry may include an amplifier, an input transformer for coupling radio-frequency input signals to the amplifier, an active inductor load coupled to the input transformer, and a second order intermodulation generation circuit configured to generate and inject a second order intermodulation product into the input transformer. The injected second order intermodulation product can be used to cancel out unwanted third order intermodulation products generated by the amplifier, which reduces intermodulation distortion experienced by the amplifier circuitry.
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公开(公告)号：US20250096836A1
公开(公告)日：2025-03-20
申请号：US18672960
申请日：2024-05-23
Applicant: Apple Inc.
Inventor： Nitesh Singhal , Mark G. Forbes , Abbas Komijani , Jong Seok Park , Youngchang Yoon , Georgios Palaskas
IPC: H04B1/40 , H03K17/687 , H03M1/66 , H04B17/21
Abstract: Wireless circuitry is provided that includes a radio-frequency circuit having an input transistor and bias point selection circuitry configured to determine an optimal bias voltage for the input transistor. The bias point selection circuitry may include a replica transistor, a voltage generator configured to output one or more voltage levels to a gate terminal of the replica transistor, a current-to-voltage converter coupled to a source-drain terminal of the replica transistor, an analog-to-digital converter configured to receive analog voltages from the current-to-voltage converter and to output corresponding digital codes based on the received analog voltages, and associated control circuitry configured to receive the digital codes from the analog-to-digital converter and to adjust the voltage generator to output the optimal bias voltage based on the digital codes. The optimal bias voltage produces a third order transconductance of zero for the input transistor, which results in improved linearity for the radio-frequency circuit.
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公开(公告)号：US12119796B2
公开(公告)日：2024-10-15
申请号：US17539977
申请日：2021-12-01
Applicant: Apple Inc.
Inventor： Nitesh Singhal
CPC classification number: H03F3/245 , H04B1/40 , H03F2200/451
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. Radio-frequency power amplifier circuitry may include an amplifier, an input transformer for coupling radio-frequency input signals to the amplifier, an active inductor load coupled to the input transformer, and a second order intermodulation generation circuit configured to generate and inject a second order intermodulation product into the input transformer. The injected second order intermodulation product can be used to cancel out unwanted third order intermodulation products generated by the amplifier, which reduces intermodulation distortion experienced by the amplifier circuitry.
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公开(公告)号：US20240097628A1
公开(公告)日：2024-03-21
申请号：US18082412
申请日：2022-12-15
Applicant: Apple Inc.
Inventor： Nitesh Singhal , Mark G Forbes
CPC classification number: H03F3/245 , H03F1/0222 , H03F3/195 , H04B1/0458 , H03F2200/451 , H03F2200/534 , H03F2200/537 , H03F2200/541 , H04B2001/0408
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. A power amplifier may include multiple amplifier stages. Current sharing or reuse may occur between two amplifier stages in the power amplifier via a current flow path between the two amplifier stages. A power supply voltage line may be connected to the current flow path and may provide the downstream amplifier stage with a supplemental supply current based on which the downstream amplifier stage can amplify a radio-frequency signal received from the upstream amplifier stage.
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Patent Agency Ranking
公开(公告)号：US20250096755A1
公开(公告)日：2025-03-20
申请号：US18920140
申请日：2024-10-18
Applicant: Apple Inc.
Inventor： Nitesh Singhal
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. Radio-frequency power amplifier circuitry may include an amplifier, an input transformer for coupling radio-frequency input signals to the amplifier, an active inductor load coupled to the input transformer, and a second order intermodulation generation circuit configured to generate and inject a second order intermodulation product into the input transformer. The injected second order intermodulation product can be used to cancel out unwanted third order intermodulation products generated by the amplifier, which reduces intermodulation distortion experienced by the amplifier circuitry.
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公开(公告)号：US20230231522A1
公开(公告)日：2023-07-20
申请号：US17580128
申请日：2022-01-20
Applicant: Apple Inc.
Inventor： Nitesh Singhal , Mark G. Forbes
CPC classification number: H03F3/19 , H03G3/3036 , H04B1/04 , H03F2200/451 , H03G2201/103 , H03G2201/307 , H04B1/40
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more radio-frequency amplifiers for amplifying a radio-frequency signal. The radio-frequency amplifier may include input transistors cross-coupled with capacitance neutralization transistors and/or coupled to cascode transistors. One or more n-type gain adjustment transistors may be coupled to source terminals of the capacitance neutralization transistors. One or more p-type gain adjustment transistors may be coupled to source terminals of the cascode transistors. One or more processors in the electronic device can selectively activate one or more of the gain adjustment transistors to reduce the gain of the radio-frequency amplifier without degrading noise performance and without altering the in-band frequency response of the radio-frequency amplifier.
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公开(公告)号：US20230170859A1
公开(公告)日：2023-06-01
申请号：US17539977
申请日：2021-12-01
Applicant: Apple Inc.
Inventor： Nitesh Singhal
CPC classification number: H03F3/245 , H04B1/40 , H03F2200/451
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. Radio-frequency power amplifier circuitry may include an amplifier, an input transformer for coupling radio-frequency input signals to the amplifier, an active inductor load coupled to the input transformer, and a second order intermodulation generation circuit configured to generate and inject a second order intermodulation product into the input transformer. The injected second order intermodulation product can be used to cancel out unwanted third order intermodulation products generated by the amplifier, which reduces intermodulation distortion experienced by the amplifier circuitry.
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公开(公告)号：US20250105802A1
公开(公告)日：2025-03-27
申请号：US18975084
申请日：2024-12-10
Applicant: Apple Inc.
Inventor： Nitesh Singhal , Mark G. Forbes
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more radio-frequency amplifiers for amplifying a radio-frequency signal. The radio-frequency amplifier may include input transistors cross-coupled with capacitance neutralization transistors and/or coupled to cascode transistors. One or more n-type gain adjustment transistors may be coupled to source terminals of the capacitance neutralization transistors. One or more p-type gain adjustment transistors may be coupled to source terminals of the cascode transistors. One or more processors in the electronic device can selectively activate one or more of the gain adjustment transistors to reduce the gain of the radio-frequency amplifier without degrading noise performance and without altering the in-band frequency response of the radio-frequency amplifier.
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公开(公告)号：US12126310B2
公开(公告)日：2024-10-22
申请号：US18465910
申请日：2023-09-12
Applicant: Apple Inc.
Inventor： Nitesh Singhal
CPC classification number: H03F3/245 , H04B1/40 , H03F2200/451
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver, an antenna, and a front-end module coupled between the transceiver and the antenna. The front-end module may include one or more power amplifiers for amplifying a signal for transmission through the antenna. Radio-frequency power amplifier circuitry may include an amplifier, an input transformer for coupling radio-frequency input signals to the amplifier, an active inductor load coupled to the input transformer, and a second order intermodulation generation circuit configured to generate and inject a second order intermodulation product into the input transformer. The injected second order intermodulation product can be used to cancel out unwanted third order intermodulation products generated by the amplifier, which reduces intermodulation distortion experienced by the amplifier circuitry.
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