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公开(公告)号：US11211906B1
公开(公告)日：2021-12-28
申请号：US16917325
申请日：2020-06-30
Applicant: Apple Inc.
Inventor： Saihua Lin , Hongrui Wang , Sohrab Emami-Neyestanak
Abstract: The present disclosure relates to systems and methods for operating transceiver circuitry to transmit or receive signals on various frequency ranges. To do so, a transmitter or a receiver of the transceiver circuitry is selectively coupled to or uncoupled from an antenna of the transceiver circuitry. Additionally, radio frequency filters may be individually or collectively coupled to and/or uncoupled from the antenna to filter different frequencies in the transmitting or receiving signals.
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公开(公告)号：US20210391843A1
公开(公告)日：2021-12-16
申请号：US17234027
申请日：2021-04-19
Applicant: Apple Inc.
Inventor： Hongrui Wang , Sohrab Emami-Neyestanak , Saihua Lin
Abstract: A radio frequency filtering circuitry includes a first inductor, a second inductor, and a conductive loop. The first inductor receives a first current that induces a second current in the second inductor upon receiving the first current. The first inductor and/or the second inductor induce a third current in the conductive loop. The conductive loop adjusts the third current to reduce a first gain peak of an output signal to correlate to a second gain peak of the output signal.
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23.发明授权公开(公告)号：US12047111B2
公开(公告)日：2024-07-23
申请号：US17859860
申请日：2022-07-07
Applicant: Apple Inc.
Inventor： Saihua Lin
CPC classification number: H04B1/48 , H04B1/006 , H04B1/0064 , H04B2001/485
Abstract: Embodiments disclosed herein relate to reducing insertion loss in a transceiver while improving an operating efficiency of the transceiver. To do so, the transceiver may include isolation circuitry with harmonic distortion rejection circuitry, an electrostatic discharge filter, an out-of-band noise filter, and/or a matching network. In particular, the harmonic distortion rejection circuitry may enable a second harmonic signal to pass from a power amplifier of a transmitter of the transceiver to ground. The electrostatic discharge filter may also provide a path to ground for electrostatic discharge, and the out-of-band noise filter may provide a path to ground for noise signals. The isolation circuitry may substantially remove or decrease interference caused by undesirable signals while reducing a power consumption and thus improving an operating efficiency of the transceiver.
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24.发明授权公开(公告)号：US11843356B2
公开(公告)日：2023-12-12
申请号：US17688652
申请日：2022-03-07
Applicant: Apple Inc.
Inventor： Saihua Lin
CPC classification number: H03F3/245 , H04B1/04 , H03F2200/451 , H04B2001/045
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 an amplitude modulation distortion compensation circuit coupled to the input of the power amplifier. The compensation circuit may include adaptive biasing transistors each having a first source-drain terminal coupled to the input of the power amplifier, a second source-drain terminal coupled to a supply voltage, and a gate terminal configured to receive a control voltage via a big resistor. The control voltage can be set to a voltage level so that the adaptive biasing transistors are only turned on when the voltage swing at the input of the power amplifier is relatively large.
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25.发明申请公开(公告)号：US20230079254A1
公开(公告)日：2023-03-16
申请号：US17687829
申请日：2022-03-07
Applicant: Apple Inc.
Inventor： Saihua Lin
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 a phase distortion compensation circuit. The phase distortion compensation circuit may include one or more n-type metal-oxide-semiconductor capacitors configured to receive a bias voltage. The bias voltage may be set to provide the proper amount of phase distortion compensation.
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Patent Agency Ranking
26.发明授权公开(公告)号：US12028098B2
公开(公告)日：2024-07-02
申请号：US17687829
申请日：2022-03-07
Applicant: Apple Inc.
Inventor： Saihua Lin
CPC classification number: H04B1/0475 , H03F3/245 , H03F2200/451 , H04B2001/045
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 a phase distortion compensation circuit. The phase distortion compensation circuit may include one or more n-type metal-oxide-semiconductor capacitors configured to receive a bias voltage. The bias voltage may be set to provide the proper amount of phase distortion compensation.
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公开(公告)号：US11533036B2
公开(公告)日：2022-12-20
申请号：US17234027
申请日：2021-04-19
Applicant: Apple Inc.
Inventor： Hongrui Wang , Sohrab Emami-Neyestanak , Saihua Lin
Abstract: A radio frequency filtering circuitry includes a first inductor, a second inductor, and a conductive loop. The first inductor receives a first current that induces a second current in the second inductor upon receiving the first current. The first inductor and/or the second inductor induce a third current in the conductive loop. The conductive loop adjusts the third current to reduce a first gain peak of an output signal to correlate to a second gain peak of the output signal.
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28.发明申请公开(公告)号：US20220376735A1
公开(公告)日：2022-11-24
申请号：US17859860
申请日：2022-07-07
Applicant: Apple Inc.
Inventor： Saihua Lin
Abstract: Embodiments disclosed herein relate to reducing insertion loss in a transceiver while improving an operating efficiency of the transceiver. To do so, the transceiver may include isolation circuitry with harmonic distortion rejection circuitry, an electrostatic discharge filter, an out-of-band noise filter, and/or a matching network. In particular, the harmonic distortion rejection circuitry may enable a second harmonic signal to pass from a power amplifier of a transmitter of the transceiver to ground. The electrostatic discharge filter may also provide a path to ground for electrostatic discharge, and the out-of-band noise filter may provide a path to ground for noise signals. The isolation circuitry may substantially remove or decrease interference caused by undesirable signals while reducing a power consumption and thus improving an operating efficiency of the transceiver.
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公开(公告)号：US20210358677A1
公开(公告)日：2021-11-18
申请号：US15930084
申请日：2020-05-12
Applicant: Apple Inc.
Inventor： Hongrui Wang , Saihua Lin , Abbas Komijani , Sohrab Emami-Neyestanak
Abstract: Radio frequency filtering circuitry blocks certain frequencies in an outgoing signal so that the signal may be transmitted over a desired frequency. The radio frequency filtering circuitry includes a first inductor having a first coil and a second inductor coupled to and disposed within the first coil. The second inductor has a second coil and a third coil symmetrical to the second coil. When current is applied to the radio frequency filtering circuitry, the current in the second coil causes a first induced current in the first coil and the current in the third coil causes a second induced current in the first coil, wherein the second induced current is approximately equal in magnitude and opposite in direction to the first induced current. As such, the second induced current may compensate for the first induced current.
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公开(公告)号：US20200106472A1
公开(公告)日：2020-04-02
申请号：US16147436
申请日：2018-09-28
Applicant: Apple Inc.
Inventor： Sohrab Emami-Neyestanak , Saihua Lin
Abstract: A transceiver circuit that includes a receiver and transmitter circuits may send and receive data signals using an antenna. The transceiver circuit may be coupled to the antenna and other circuits using multiple impedance matching networks configured to match input and output impedance values of the receiver and transmitter circuits to the antenna and other circuits. The impedance matching networks may selectively couple and decouple different ports of the receiver and transmitter circuits to other circuit nodes based on whether the transceiver is operating in transmit or receive mode.
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