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    Active balun for wideband applications
    22.
    发明授权
    Active balun for wideband applications 有权
    主动平衡 - 不平衡转换器用于宽带应用

    公开(公告)号：US09503053B1

    公开(公告)日：2016-11-22

    申请号：US14711493

    申请日：2015-05-13

    Applicant: QUALCOMM Incorporated

    Inventor： Sunyoung Kim ,  Cheng-Han Wang

    IPC: H03F3/45 ,  H03H11/32 ,  H03F3/193

    CPC classification number: H03H11/32 ,  H03F3/193 ,  H03F3/265 ,  H03F3/45654 ,  H03F2200/451

    Abstract: An active balun uses two inverters to produce a differential output from a single-ended input. A current source supplies current to both inverters and a current sink sinks current from both inverters. The inverters include bias resistors coupled between their inputs and outputs. A coupling capacitor couples the output of the first inverter to the input of the first inverter. Values of the bias resistors and the coupling capacitor may selected to assure stability of the active balun. The values may be programmable, for example, based on a desired operating frequency. The current source may be biased by a common-mode feedback circuit based on the common-mode voltage of the differential output.

    Abstract translation: 主动平衡 - 不平衡变压器使用两个逆变器从单端输入产生差分输出。 电流源为两个逆变器提供电流，并且电流吸收器从两个逆变器吸收电流。 逆变器包括耦合在其输入和输出之间的偏置电阻。 耦合电容将第一反相器的输出耦合到第一反相器的输入端。 可以选择偏置电阻器和耦合电容器的值以确保主动平衡 - 不平衡变压器的稳定性。 这些值可以是可编程的，例如，基于期望的操作频率。 基于差分输出的共模电压，可以通过共模反馈电路来偏置电流源。

    Phase imbalance calibration
    23.
    发明授权
    Phase imbalance calibration 有权
    相位不平衡校准

    公开(公告)号：US09379929B2

    公开(公告)日：2016-06-28

    申请号：US14220425

    申请日：2014-03-20

    Applicant: QUALCOMM Incorporated

    Inventor： Cheng-Han Wang ,  I-Liang Lin ,  Liang Zhao ,  Hong Sun Kim ,  Yi Zeng

    IPC: H04B1/10 ,  H04L27/34 ,  H04L27/36 ,  H03D3/00

    CPC classification number: H04L27/3405 ,  H03C2200/0041 ,  H03D3/008 ,  H03D3/009 ,  H03D2200/0045 ,  H04L27/364

    Abstract: A circuit for performing a residual side band calibration is described. The circuit generally includes a phase imbalance detection circuit. The phase imbalance detection circuit may include a limiter. The phase imbalance detection circuit may be independent of gain imbalance. The circuit may also include a phase imbalance correction circuit. The phase imbalance detection circuit may control coupling between an inphase path and a quadrature path.

    Abstract translation: 描述用于执行残余边带校准的电路。 该电路通常包括相位不平衡检测电路。 相位不平衡检测电路可以包括限幅器。 相位不平衡检测电路可以与增益不平衡无关。 电路还可以包括相位不平衡校正电路。 相位不平衡检测电路可以控制同相路径和正交路径之间的耦合。

    ARCHITECTURE TO REJECT NEAR END BLOCKERS AND TRANSMIT LEAKAGE
    24.
    发明申请
    ARCHITECTURE TO REJECT NEAR END BLOCKERS AND TRANSMIT LEAKAGE 有权
    拒绝接近阻塞者的结构和传输泄漏

    公开(公告)号：US20160020752A1

    公开(公告)日：2016-01-21

    申请号：US14331685

    申请日：2014-07-15

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Bagher Vahid Far ,  Cheng-Han Wang ,  Jesse Aaron Richmond ,  Thinh Cat Nguyen ,  Abbas Komijani ,  Yashar Rajavi ,  Alireza Khalili

    IPC: H03H17/02

    CPC classification number: H03H11/0433 ,  H03H11/1252 ,  H04B1/109 ,  H04B1/525

    Abstract: A method and apparatus for minimizing transmit signal interference is provided. The method includes the steps of: receiving a signal and amplifying the received signal. The received signal is then mixed with an intermediate frequency signal to obtain a baseband modulated signal. The baseband modulated signal is first filtered in an RC filter. The resulting signal is then divided by a preselected amount and the first divided portion is sent to a main path of a biquad filter, which produces a first stage biquad filtered signal. The second portion of the divided signal is sent to an auxiliary path of the biquad filter, and produces a second filtered signal. The first and second signals are then recombined and sent to the second stage of the biquad filter, where further filtering takes place.

    Abstract translation: 提供一种用于最小化发射信号干扰的方法和装置。 该方法包括以下步骤：接收信号并放大所接收的信号。 然后将接收到的信号与中频信号混合以获得基带调制信号。 首先在RC滤波器中过滤基带调制信号。 然后将所得信号除以预选量，并将第一分割部分发送到双二阶滤波器的主路径，其产生第一级双二进制滤波信号。 分频信号的第二部分被发送到二叉滤波器的辅助路径，并且产生第二滤波信号。 然后将第一和第二信号重新组合并发送到二级滤波器的第二级，其中进行进一步的滤波。

    Methods and apparatus for generating two-tone calibration signals for performing linearity calibration
    25.
    发明授权
    Methods and apparatus for generating two-tone calibration signals for performing linearity calibration 有权
    用于产生用于进行线性校准的双色调校信号的方法和装置

    公开(公告)号：US09231716B2

    公开(公告)日：2016-01-05

    申请号：US14265078

    申请日：2014-04-29

    Applicant: QUALCOMM Incorporated

    Inventor： Jesse Aaron Richmond ,  Cheng-Han Wang ,  Mohammad Bagher Vahid Far ,  Yi Zeng ,  Jin-Su Ko

    IPC: H04L27/06 ,  H04B17/21 ,  H04L7/033

    CPC classification number: H04B17/21 ,  H04L7/0331

    Abstract: Certain aspects of the present disclosure provide methods and apparatus for generating a two-tone signal for performing linearity calibration of a radio frequency (RF) circuit. One example apparatus generally includes a tone generating circuit configured to generate a first single-tone signal from a digital clock signal and a mixer connected with the tone generating circuit and configured to mix the first single-tone signal with a second single-tone signal to provide a two-tone signal having frequencies at a sum and a difference of frequencies of the first and second single-tone signals.

    Abstract translation: 本公开的某些方面提供了用于生成用于执行射频（RF）电路的线性校准的双音信号的方法和装置。 一个示例性设备通常包括乐音发生电路，其被配置为从数字时钟信号产生第一单音信号，以及混音器，与音调发生电路相连，并配置为将第一单音信号与第二单音信号混合到 提供具有第一和第二单音信号的和频和频差的频率的双音信号。

    Temperature Dependent Amplifier Biasing
    26.
    发明申请
    Temperature Dependent Amplifier Biasing 有权
    温度依赖放大器偏置

    公开(公告)号：US20150207466A1

    公开(公告)日：2015-07-23

    申请号：US14158318

    申请日：2014-01-17

    Applicant: QUALCOMM Incorporated

    Inventor： Jungdong Park ,  Cheng-Han Wang ,  Hong Sun Kim ,  Mohammad Bagher Vahid Far

    IPC: H03F1/30 ,  H03F3/193

    CPC classification number: H03F1/301 ,  H03F1/30 ,  H03F3/193 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/18 ,  H03F2200/294 ,  H03F2200/411 ,  H03F2200/447 ,  H03F2200/451

    Abstract: An apparatus includes a first bias circuit configured to generate a first current that varies with temperature according to a first slope. The apparatus also includes a second bias circuit configured to generate a second current that varies with temperature according to a second slope. The apparatus further includes a low noise amplifier including a transconductance stage that is responsive to an output of the first bias circuit. The apparatus also includes a load coupled to an output of the low noise amplifier and responsive to an output of the second bias circuit.

    Abstract translation: 一种装置包括：第一偏置电路，被配置为产生根据第一斜率随温度变化的第一电流。 该装置还包括第二偏置电路，其被配置为产生根据第二斜率随温度变化的第二电流。 该装置还包括低噪声放大器，其包括响应于第一偏置电路的输出的跨导级。 该装置还包括负载耦合到低噪声放大器的输出并响应于第二偏置电路的输出。

    Method and apparatus for relative positioning of a user equipment in a vehicle
    27.
    发明授权
    Method and apparatus for relative positioning of a user equipment in a vehicle 有权

    公开(公告)号：US12202500B2

    公开(公告)日：2025-01-21

    申请号：US17491506

    申请日：2021-09-30

    Applicant: QUALCOMM Incorporated

    Inventor： Santosh Kumar Gupta ,  Shishir Gupta ,  Constantinos Steven Bekis ,  Liang Zhao ,  Le Nguyen Luong ,  Cheng-Han Wang

    IPC: H04M11/00 ,  B60W50/12 ,  H04M1/72463 ,  H04W4/48 ,  H04W64/00

    Abstract: The relative position of a user equipment (UE) within a vehicle is determined using angular measurements, such as angle of arrival (AOA), and optionally ranging measurements, with respect to a number of wireless transceivers within the vehicle using wideband signals. The relative position of the UE with respect to a personal zone or the steering wheel may be determined based on known positions of the wireless transceivers. If the UE is determined to be within the personal zone, at least one functionality of the UE is restricted to avoid driver distraction and, optionally, the operation autonomous driving of the vehicle adjusted. If the UE is worn on the driver's wrist the relative position of the UE with respect to the steering wheel may be similarly determined and operation of the vehicle modified if the UE is determined to be outside a threshold distance from the steering wheel.

    Fully I/Q balanced quadrature radio frequency mixer with low noise and low conversion loss
    29.
    发明授权
    Fully I/Q balanced quadrature radio frequency mixer with low noise and low conversion loss 有权
    全I / Q平衡正交射频混频器，噪声低，转换损耗低

    公开(公告)号：US09543897B2

    公开(公告)日：2017-01-10

    申请号：US14622591

    申请日：2015-02-13

    Applicant: QUALCOMM Incorporated

    Inventor： Cheng-Han Wang ,  Alberto Cicalini ,  Thinh Cat Nguyen ,  Mohammad Bagher Vahid Far ,  Jesse Aaron Richmond

    IPC: G06G7/12 ,  H03D7/14 ,  H03D7/16

    CPC classification number: H03D7/145 ,  H03D7/1433 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/165 ,  H03D2200/0027

    Abstract: A method, an apparatus, and a system product for mixing radio frequency signals are provided. In one aspect, the apparatus is configured to perform switching of switches based on first, second, third, and fourth phased half duty clock signals. The apparatus convolves a differential input signal on a differential input port with the first, second, third, and fourth phased half duty cycle clock signals to concurrently generate a differential in-phase output signal and a differential quadrature-phase output signal on a dual differential output port. The first, second, third, and fourth phased half duty cycle clock signals are of the same frequency and out of phase by a multiple of ninety degrees with respect to each other.

    Abstract translation: 提供了一种用于混合射频信号的方法，装置和系统产品。 一方面，该装置被配置为基于第一，第二，第三和第四相位半占空时钟信号来执行开关的切换。 该装置利用第一，第二，第三和第四相位半占空比时钟信号在差分输入端口上卷积差分输入信号，以同时产生差分同相输出信号和双差分上的差分正交相输出信号 输出端口 第一，第二，第三和第四相位半占空比时钟信号的频率相同，相位相差90度。

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