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    Low-noise amplifier (LNA) with capacitive attenuator
    3.
    发明授权
    Low-noise amplifier (LNA) with capacitive attenuator 有权

    公开(公告)号：US10033340B1

    公开(公告)日：2018-07-24

    申请号：US15400078

    申请日：2017-01-06

    Applicant: QUALCOMM Incorporated

    Inventor： Bassel Hanafi ,  Sherif Abdelhalem ,  Hasnain Lakdawala

    IPC: H03G3/30 ,  H03F1/22 ,  H03G1/00 ,  H03F3/19 ,  H03F3/21 ,  H03F1/02

    Abstract: Certain aspects of the present disclosure generally relate to a multi-output amplifier implemented using a capacitive attenuator. For example, the multi-output amplifier generally includes a first capacitive attenuator coupled to an input node of the multi-output amplifier. In certain aspects, the multi-output amplifier also includes a first amplification stage having an input coupled to a tap node of the first capacitive attenuator and an output coupled to a first output node of the multi-output amplifier, and a second amplification stage having an output coupled to a second output node of the multi-output amplifier. For certain aspects, the multi-output amplifier includes a second capacitive attenuator coupled to the input node of the multi-output amplifier, and the second amplification stage may have an input coupled to a tap node of the second capacitive attenuator.

    Constant-phase attenuator techniques in radio frequency front end (RFFE) amplifiers
    5.
    发明授权
    Constant-phase attenuator techniques in radio frequency front end (RFFE) amplifiers 有权

    公开(公告)号：US12255674B2

    公开(公告)日：2025-03-18

    申请号：US17580320

    申请日：2022-01-20

    Applicant: QUALCOMM Incorporated

    Inventor： Xingyi Hua ,  Bassel Hanafi ,  Karthik Tripurari Jayaraman ,  Francesco Gatta

    IPC: H03F1/22 ,  H03F1/56 ,  H04B1/04

    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.

    SAWLESS ARCHITECTURE FOR RECEIVERS
    7.
    发明申请
    SAWLESS ARCHITECTURE FOR RECEIVERS 有权
    接收机的无缝结构

    公开(公告)号：US20160142085A1

    公开(公告)日：2016-05-19

    申请号：US14643498

    申请日：2015-03-10

    Applicant: QUALCOMM Incorporated

    Inventor： Ojas Mahendra Choksi ,  Bin Fan ,  Bassel Hanafi ,  Hasnain Mohammedi Lakdawala ,  Prashanth Akula ,  Faramarz Sabouri

    IPC: H04B1/16 ,  H04B1/10

    CPC classification number: H04B1/16 ,  H04B1/1018 ,  H04B1/1027 ,  H04B1/1638 ,  H04B2001/0416

    Abstract: An apparatus including: at least one differential amplifier configured to amplify a radio frequency signal; a mixer configured to mix the radio frequency signal from the at least one differential amplifier with a local oscillator signal; and a low-pass filter coupled to the mixer, the low-pass filter includes a capacitor and at least one variable resistor configured to tune the low-pass filter.

    Abstract translation: 一种装置，包括：至少一个差分放大器，被配置为放大射频信号; 配置为将来自所述至少一个差分放大器的射频信号与本地振荡器信号混合的混频器; 以及耦合到混频器的低通滤波器，低通滤波器包括电容器和配置成调谐低通滤波器的至少一个可变电阻器。

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