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    ENVELOPE TRACKING RADIO FREQUENCY FRONT-END CIRCUIT
    1.
    发明公开
    ENVELOPE TRACKING RADIO FREQUENCY FRONT-END CIRCUIT 审中-公开

    公开(公告)号：US20230421105A1

    公开(公告)日：2023-12-28

    申请号：US18251252

    申请日：2021-08-23

    申请人： Qorvo US, Inc.

    发明人： Nadim Khlat

    IPC分类号： H03F1/02 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213

    CPC分类号： H03F1/025 ,  H03F3/195 ,  H03F3/211 ,  H03F3/213 ,  H03F2200/153

    摘要： An envelope tracking (ET) radio frequency (RF) front-end circuit receives a single tracking signal (e.g., Vramp) from a baseband transceiver and generates a plurality of control signals (Vcc). The control signals are created by a multiple control signal generator circuit based on a calculated load estimate for each relevant power amplifier. The load estimate may be calculated from a sensed current and voltage. By providing control signals optimized for loads presented to the power amplifiers, the overall efficiency of the transmitter is improved.

    AMPLIFIERS AND RELATED INTEGRATED CIRCUITS
    2.
    发明申请
    AMPLIFIERS AND RELATED INTEGRATED CIRCUITS 审中-公开

    公开(公告)号：US20190199289A1

    公开(公告)日：2019-06-27

    申请号：US15854034

    申请日：2017-12-26

    申请人： NXP USA, Inc.

    发明人： Yun Wei ,  Monte Miller

    IPC分类号： H03F1/02 ,  H03F3/195 ,  H01L23/66 ,  H01L29/20

    CPC分类号： H03F1/0205 ,  H01L23/66 ,  H01L29/2003 ,  H01L2223/665 ,  H03F3/195 ,  H03F2200/153 ,  H03F2200/451

    摘要： Embodiments of an amplifiers and integrated circuits include a first transistor and a second transistor. A second current-carrying terminal of the first transistor may be coupled to a first current-carrying terminal of the second transistor and the control terminal of the second transistor may be coupled to a low impedance alternating current (AC) potential node. A bias network that includes a first circuit element and a second circuit element couples the second current-carrying terminal of the second transistor to the control terminal of the second transistor. The first circuit element may be configured to apply a portion of a potential at the second current-carrying terminal of the second transistor to the control terminal of the second transistor, and the second circuit element may be coupled between the control terminal of the second transistor and a fixed potential.

    AMPLIFIER ARRANGEMENT AND AMPLIFICATION METHOD
    7.
    发明申请
    AMPLIFIER ARRANGEMENT AND AMPLIFICATION METHOD 审中-公开

    公开(公告)号：US20170155365A1

    公开(公告)日：2017-06-01

    申请号：US15310084

    申请日：2015-03-24

    申请人： ams AG

    发明人： Weixun YAN ,  Thomas FROEHLICH

    IPC分类号： H03F1/26 ,  H04R19/04 ,  H04R19/00 ,  H03F3/185

    CPC分类号： H03F1/26 ,  H03F1/34 ,  H03F3/185 ,  H03F3/26 ,  H03F2200/03 ,  H03F2200/153 ,  H03F2200/471 ,  H04R19/005 ,  H04R19/04 ,  H04R2201/003

    摘要： An amplifier arrangement has an input transistor being connected between reference potential terminals by a current source and a current sink. An amplifier stage has an amplifier output coupled to a first connection node between the current sink and a first terminal of the input transistor by means of a feedback path, and an amplifier input connected to a second connection node between the current source and the second terminal of the input transistor. A level-shifting structure has a level-shifting element with one end connected to a reference connection, wherein the level-shifting element is adapted to perform a level-shifting of a potential at the second connection node with respect to a potential at the reference connection. The reference connection is coupled to one of the following: the amplifier output, the first connection node, a control terminal of the input transistor.

    Distributed amplifier with improved stabilization
    10.
    发明授权
    Distributed amplifier with improved stabilization 有权
    分布式放大器具有改进的稳定性

    公开(公告)号：US09425752B2

    公开(公告)日：2016-08-23

    申请号：US14327944

    申请日：2014-07-10

    申请人： Hittite Microwave Corporation

    发明人： Keith Benson

    IPC分类号： H03F3/193 ,  H03F1/08 ,  H03F1/22 ,  H03F3/60

    CPC分类号： H03F1/18 ,  H03F1/086 ,  H03F1/223 ,  H03F1/42 ,  H03F3/19 ,  H03F3/193 ,  H03F3/607 ,  H03F2200/108 ,  H03F2200/144 ,  H03F2200/153 ,  H03F2200/267 ,  H03F2200/423 ,  H03F2200/61

    摘要： A distributed amplifier with improved stabilization includes an input transmission circuit, an output transmission circuit, at least one cascade amplifier coupled between said input and output transmission circuits. Each cascade amplifier includes a common-gate configured transistor coupled to the output transmission circuit, and a common-source configured transistor coupled between the input transmission circuit and the common-gate configured transistor. The distributed amplifier also includes a non-parasitic resistance and capacitance coupled in series between a drain and a gate of at least one of the common-gate configured transistors for increasing the amplifier stability.

    摘要翻译： 具有改进的稳定性的分布式放大器包括输入传输电路，输出传输电路，耦合在所述输入和输出传输电路之间的至少一个级联放大器。 每个级联放大器包括耦合到输出传输电路的共栅配置的晶体管，以及耦合在输入传输电路和共栅配置晶体管之间的公共源配置的晶体管。 分布式放大器还包括串联耦合在至少一个共栅配置晶体管的漏极和栅极之间的非寄生电阻和电容，用于增加放大器的稳定性。