CONSTANT-PHASE ATTENUATOR TECHNIQUES IN RADIO FREQUENCY FRONT END (RFFE) AMPLIFIERS

    公开(公告)号:US20230231586A1

    公开(公告)日:2023-07-20

    申请号:US17580320

    申请日:2022-01-20

    CPC classification number: H04B1/0483 H03F1/565 H04B2001/0416 H03F2200/451

    Abstract: Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry implementing a low noise amplifier (LNA) with phase-shifting circuitry to achieve a continuous phase at the output of the LNA. One aspect is an amplifier including a high gain active path comprising active circuitry, and a low gain path comprising passive circuitry and phase-shifting circuitry. In one or more aspects, the phase-shifting circuitry is configured to shift a phase of an input signal within the low gain path such that the phase of an output signal outputted from the low gain path approximately matches a phase of an output signal outputted from the high gain active path. In at least one aspect, a gain of the high gain active path is higher than a gain of the low gain passive path.

    RIPPLE CANCELLATION FOR SWITCHED-CAPACITOR CIRCUIT

    公开(公告)号:US20230179181A1

    公开(公告)日:2023-06-08

    申请号:US17457840

    申请日:2021-12-06

    Inventor: Xingyi HUA

    CPC classification number: H03H19/004 H02M1/14

    Abstract: In certain aspects, a system includes a voltage line, a switched-capacitor circuit coupled to the voltage line, and a ripple-cancellation circuit. The ripple-cancellation circuit includes a current mirror having a first branch and a second branch, wherein the second branch of the current mirror is coupled to the voltage line, a switching circuit having a first terminal, a second terminal, and a third terminal, wherein the first terminal of the switching circuit is coupled to the first branch of the current mirror, and the third terminal is coupled to a ground or a reference voltage, and a first capacitor coupled to the second terminal of the switching circuit.

    INDUCTOR REUSE TECHNIQUE FOR AMPLIFIER

    公开(公告)号:US20250141406A1

    公开(公告)日:2025-05-01

    申请号:US18499682

    申请日:2023-11-01

    Abstract: Certain aspects of the present disclosure provide an amplifier. The amplifier generally includes: an active path coupled between an input node of the amplifier and an output node of the amplifier, wherein the active path comprises a first transistor coupled to the input node of the amplifier and a first inductive element coupled between the first transistor and the output node; and a bypass path coupled between the input node of the amplifier and the output node of the amplifier, the bypass path also comprising the first inductive element.

    AMPLIFIER WITH INTEGRATED NOTCH FILTER
    8.
    发明公开

    公开(公告)号:US20230327693A1

    公开(公告)日:2023-10-12

    申请号:US17658379

    申请日:2022-04-07

    Abstract: Techniques for providing low-cost and effective jammer rejection for an amplifier is disclosed. The amplifier includes an input node and an output node, a first transistor and a second transistor, a load circuitry, an inductor, and a capacitor. A first terminal of the first transistor is coupled to a ground. A second terminal of the first transistor is coupled to a first terminal of the second transistor. A second terminal of the second transistor is coupled to the output node. The load circuitry is coupled between a power supply and the second terminal of the second transistor. A first terminal of the inductor is coupled to the ground through a first switch. A first terminal of the capacitor is coupled to the first terminal of the second transistor and a second terminal of the capacitor is coupled to a second terminal of the inductor.

    ACTIVE SPLITTING AMPLIFIER CIRCUIT

    公开(公告)号:US20250132736A1

    公开(公告)日:2025-04-24

    申请号:US18829889

    申请日:2024-09-10

    Abstract: Aspects of the present disclosure relate to a receiver including an amplifier circuit. The amplifier circuit includes a common-source amplifier having an input and an output, and a common-gate amplifier having an input and an output, wherein the input of the common-gate amplifier is coupled to the output of the common-source amplifier. The receiver also includes a first receive chain coupled to the output of the common-gate amplifier, and a second receive chain coupled to the output of the common-source amplifier.

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