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    Wireless amplifier circuitry for carrier aggregation
    82.
    发明授权
    Wireless amplifier circuitry for carrier aggregation 有权

    公开(公告)号：US11711105B2

    公开(公告)日：2023-07-25

    申请号：US17477215

    申请日：2021-09-16

    Applicant: Apple Inc.

    Inventor： Seyed Mohammad Hossein Mohammadnezhad ,  Aly Ismail ,  Xi Yao

    IPC: H04B1/16 ,  H03F3/19 ,  H03G3/30

    CPC classification number: H04B1/16 ,  H03F3/19 ,  H03G3/3036 ,  H03F2200/294 ,  H03F2200/451 ,  H03G2201/103 ,  H03G2201/307

    Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The low noise amplifier is operable in a non-carrier-aggregation (NCA) mode and a carrier aggregation (CA) mode. The low noise amplifier may include a first input stage, a second input stage, a complementary degeneration transformer, and an input impedance compensation circuit. During the NCA mode, the first input stage is turned on while the second input stage is turned off, the degeneration transformer is controlled to provide maximum inductance, and the compensation circuit is turned on to provide input matching. During the CA mode, the first and second input stages are turned on, the degeneration transformer is adjusted to provide less inductance, and the compensation circuit is turned off.

    Gain control methods and systems in an amplifier assembly
    85.
    发明授权
    Gain control methods and systems in an amplifier assembly 有权
    放大器组件中的增益控制方法和系统

    公开(公告)号：US07969241B2

    公开(公告)日：2011-06-28

    申请号：US12836923

    申请日：2010-07-15

    Applicant: Leonard Dauphinee ,  Lawrence M. Burns

    Inventor： Leonard Dauphinee ,  Lawrence M. Burns

    IPC: H03G3/20

    CPC classification number: H01L22/20 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H01L2924/0002 ,  H03F3/211 ,  H03G3/3036 ,  H03G3/3052 ,  H03G2201/307 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102 ,  H01L2924/00

    Abstract: A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate the high and low thresholds. A controller module changes the gain of the VGA so as to drive the detected power in a direction toward the middle threshold when the comparator module indicates the detected power is not between the high and low thresholds.

    Abstract translation: 可变增益放大器（VGA）根据增益放大输入信号，以产生放大信号。 检测器模块检测指示放大信号的功率的功率。 比较器模块将检测到的功率与高阈值和低阈值中间的高阈值，低阈值和目标阈值进行比较。 当比较器模块指示检测到的功率不在高阈值和低阈值之间时，控制器模块改变VGA的增益以驱动检测到的功率朝向中间阈值的方向。

    Gain Control Methods and Systems in an Amplifier Assembly
    86.
    发明申请
    Gain Control Methods and Systems in an Amplifier Assembly 有权
    放大器组件中的增益控制方法和系统

    公开(公告)号：US20100277235A1

    公开(公告)日：2010-11-04

    申请号：US12836923

    申请日：2010-07-15

    Applicant: Leonard Dauphinee ,  Lawrence M. Burns

    Inventor： Leonard Dauphinee ,  Lawrence M. Burns

    IPC: H03G3/30

    CPC classification number: H01L22/20 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H01L2924/0002 ,  H03F3/211 ,  H03G3/3036 ,  H03G3/3052 ,  H03G2201/307 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102 ,  H01L2924/00

    Abstract: A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate the high and low thresholds. A controller module changes the gain of the VGA so as to drive the detected power in a direction toward the middle threshold when the comparator module indicates the detected power is not between the high and low thresholds.

    Abstract translation: 可变增益放大器（VGA）根据增益放大输入信号，以产生放大信号。 检测器模块检测指示放大信号的功率的功率。 比较器模块将检测到的功率与高阈值和低阈值中间的高阈值，低阈值和目标阈值进行比较。 当比较器模块指示检测到的功率不在高阈值和低阈值之间时，控制器模块改变VGA的增益以驱动检测到的功率朝向中间阈值的方向。

    AGC system, AGC method, and receiver using the AGC system
    88.
    发明授权
    AGC system, AGC method, and receiver using the AGC system 失效
    AGC系统，AGC方法和使用AGC系统的接收机

    公开(公告)号：US07496163B2

    公开(公告)日：2009-02-24

    申请号：US11007159

    申请日：2004-12-09

    Applicant: Kenji Terao

    Inventor： Kenji Terao

    IPC: H04L27/08

    CPC classification number: H03G3/3078 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307

    Abstract: In a slot format of a received signal, AGC gain update timings (t1 to t4) are shifted every time to disperse and reduce an influence of a noise attributable to a direct current component specific to direct conversion which is accompanied by AGC gain update. In particular, in the case where each of slots in the received signal includes an information portion (data) having a larger code correcting capability and an information portion having a smaller code correcting capability (TPC (transmission power control), TFCI (transport format combination indicator), PILOT), the AGC gain update timing is generated while being shifted in the former information portion, thereby reduce the influence of the noise. When the amount of shift of the AGC gain update timing is set to be larger than that of one symbol of the received signal, the influence of the noise accompanied by the AGC gain update is further reduced.

    Abstract translation: 在接收信号的时隙格式中，AGC增益更新定时（t1至t4）每次都被移位以分散并减小归因于伴随AGC增益更新的直接转换特有的直流分量的噪声的影响。 特别地，在接收信号中的每个时隙包括具有较大代码校正能力的信息部分（数据）和具有较小代码校正能力的信息部分（TPC（传输功率控制）），TFCI（传输格式组合 指示器），PILOT）时，在前一个信息部分中移动时产生AGC增益更新定时，从而减少噪声的影响。 当AGC增益更新定时的移位量被设置为大于接收信号的一个符号的移位量时，进一步降低伴随AGC增益更新的噪声的影响。

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