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    Degeneration for a wideband voltage-controlled oscillator
    2.
    发明授权
    Degeneration for a wideband voltage-controlled oscillator 有权

    公开(公告)号：US10381981B2

    公开(公告)日：2019-08-13

    申请号：US15706034

    申请日：2017-09-15

    Applicant: Qualcomm Incorporated

    Inventor： Masoud Moslehi Bajestan ,  Mehran Mohammadi Izad ,  Mohammad Farazian

    IPC: H03L7/06 ,  H03B5/12 ,  H03L7/093

    Abstract: The present disclosure describes aspects of degeneration for a wideband voltage-controlled oscillator (VCO) circuit. In some aspects, the VCO circuit includes a degeneration network that includes a first inductor, a second inductor, and a capacitor. The degeneration network is connected between the a supply voltage and ground, with the capacitor connected across the differential VCO, between the sources of cross-coupled PMOS transistors and the sources of cross-coupled NMOS transistors. Control circuitry selects an inductance value of a switched inductance network to select a frequency band in which the VCO circuit operates. The control circuitry also sets a switched capacitor bank and a variable capacitor bank to tune the VCO circuit to an operating frequency within the selected frequency band. The control circuitry further tunes the degeneration network to degenerate the VCO circuit to reduce phase noise in an output signal of the VCO circuit.

    Switchable Inductor Network For Wideband Circuits
    3.
    发明申请
    Switchable Inductor Network For Wideband Circuits 审中-公开

    公开(公告)号：US20190089304A1

    公开(公告)日：2019-03-21

    申请号：US15705855

    申请日：2017-09-15

    Applicant: Qualcomm Incorporated

    Inventor： Masoud Moslehi Bajestan ,  Mehran Mohammadi Izad ,  Mohammad Farazian

    IPC: H03B5/12 ,  H01F21/12 ,  H01F27/28

    Abstract: The present disclosure describes aspects of a switchable inductor network for wideband circuits. In some aspects, the switchable inductor network provides selectable inductance. The switchable inductor network includes a first coil and a second coil that includes a first inductive segment and a second inductive segment. Connection points of the second coil connect the second coil across a portion of the first coil. The switchable inductor network also includes a switch connected between the first inductive segment and the second inductive segment of the second coil. The switch is configured to change the selectable inductance of the switchable inductor network by selectively coupling the first inductive segment to the second inductive segment of the second coil in response to a control signal.

    Switchable inductor network for wideband circuits
    4.
    发明授权
    Switchable inductor network for wideband circuits 有权

    公开(公告)号：US10447204B2

    公开(公告)日：2019-10-15

    申请号：US15705855

    申请日：2017-09-15

    Applicant: Qualcomm Incorporated

    Inventor： Masoud Moslehi Bajestan ,  Mehran Mohammadi Izad ,  Mohammad Farazian

    IPC: H03B5/12 ,  H01F27/28 ,  H01F21/12

    Abstract: The present disclosure describes aspects of a switchable inductor network for wideband circuits. In some aspects, the switchable inductor network provides selectable inductance. The switchable inductor network includes a first coil and a second coil that includes a first inductive segment and a second inductive segment. Connection points of the second coil connect the second coil across a portion of the first coil. The switchable inductor network also includes a switch connected between the first inductive segment and the second inductive segment of the second coil. The switch is configured to change the selectable inductance of the switchable inductor network by selectively coupling the first inductive segment to the second inductive segment of the second coil in response to a control signal.

    LOW POWER CURRENT RE-USING TRANSFORMER-BASED DUAL-BAND VOLTAGE CONTROLLED OSCILLATOR
    5.
    发明申请
    LOW POWER CURRENT RE-USING TRANSFORMER-BASED DUAL-BAND VOLTAGE CONTROLLED OSCILLATOR 有权
    低功耗电流重新使用基于变压器的双电压控制振荡器

    公开(公告)号：US20160373057A1

    公开(公告)日：2016-12-22

    申请号：US14745033

    申请日：2015-06-19

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Farazian ,  Masoud Moslehi Bajestan ,  Yiwu Tang ,  Jong Min Park ,  Sujiang Rong

    IPC: H03B5/12

    CPC classification number: H03B5/124 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1256 ,  H03B5/1296 ,  H03B2200/0072 ,  H03L7/099

    Abstract: A dual-band voltage controlled oscillator (VCO) includes: a first oscillator circuit including a first inductor; a second oscillator circuit including a second inductor; a first mode switch configured to electrically connect or disconnect a first output terminal of the first oscillator circuit and a first output terminal of the second oscillator circuit; a second mode switch configured to electrically connect or disconnect a second output terminal of the first oscillator circuit and a second output terminal of the second oscillator circuit; a third mode switch configured to electrically connect or disconnect a first terminal of the first inductor and a first terminal of the second inductor; and a fourth mode switch configured to electrically connect or disconnect a second terminal of the first inductor and a second terminal of the second inductor.

    Abstract translation: 双频带压控振荡器（VCO）包括：第一振荡器电路，包括第一电感器; 包括第二电感器的第二振荡器电路; 第一模式开关，被配置为电连接或断开第一振荡电路的第一输出端和第二振荡电路的第一输出端; 第二模式开关，被配置为电连接或断开第一振荡电路的第二输出端和第二振荡电路的第二输出端; 第三模式开关，被配置为电连接或断开第一电感器的第一端子和第二电感器的第一端子; 以及第四模式开关，被配置为电连接或断开第一电感器的第二端子和第二电感器的第二端子。

    Pre-distortion in a wireless transmitter
    6.
    发明授权
    Pre-distortion in a wireless transmitter 有权
    无线发射机中的预失真

    公开(公告)号：US09397711B2

    公开(公告)日：2016-07-19

    申请号：US14083240

    申请日：2013-11-18

    Applicant: QUALCOMM Incorporated

    Inventor： Bhushan Shanti Asuri ,  Thomas Domenick Marra ,  Mohammad Farazian ,  Gurkanwal Singh Sahota

    IPC: H04B1/04 ,  H04L27/36 ,  H04B17/00

    CPC classification number: H04B1/0475 ,  H04B17/10 ,  H04B17/13 ,  H04B2001/0425 ,  H04L27/361 ,  H04L27/367

    Abstract: Exemplary embodiments are related to digital pre-distortion in envelope tracking systems. A device may include an amplitude modulation-to-phase modulation (AM-PM) distortion unit configured to generate an AM-PM distortion component in response to receipt of phase data of an input transmit signal. The device may also include a local oscillator (LO) path coupled to the distortion unit and configured to convey a local oscillator (LO) signal that varies based on the AM-PM distortion component.

    Abstract translation: 示例性实施例涉及包络跟踪系统中的数字预失真。 设备可以包括被配置为响应于接收到输入发射信号的相位数据而产生AM-PM失真分量的幅度调制 - 相位调制（AM-PM）失真单元。 该装置还可以包括耦合到失真单元并被配置为传送基于AM-PM失真分量变化的本地振荡器（LO）信号的本地振荡器（LO）路径。

    Degeneration for a Wideband Voltage-Controlled Oscillator
    7.
    发明申请
    Degeneration for a Wideband Voltage-Controlled Oscillator 审中-公开

    公开(公告)号：US20190089302A1

    公开(公告)日：2019-03-21

    申请号：US15706034

    申请日：2017-09-15

    Applicant: Qualcomm Incorporated

    Inventor： Masoud Moslehi Bajestan ,  Mehran Mohammadi Izad ,  Mohammad Farazian

    IPC: H03B5/12 ,  H03L7/093

    CPC classification number: H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1268 ,  H03B2200/009 ,  H03L7/093

    Abstract: The present disclosure describes aspects of degeneration for a wideband voltage-controlled oscillator (VCO) circuit. In some aspects, the VCO circuit includes a degeneration network that includes a first inductor, a second inductor, and a capacitor. The degeneration network is connected between the a supply voltage and ground, with the capacitor connected across the differential VCO, between the sources of cross-coupled PMOS transistors and the sources of cross-coupled NMOS transistors. Control circuitry selects an inductance value of a switched inductance network to select a frequency band in which the VCO circuit operates. The control circuitry also sets a switched capacitor bank and a variable capacitor bank to tune the VCO circuit to an operating frequency within the selected frequency band. The control circuitry further tunes the degeneration network to degenerate the VCO circuit to reduce phase noise in an output signal of the VCO circuit.

    Overlapping uncoupled inductors for low-cost multi-frequency voltage-controlled oscillators
    10.
    发明授权
    Overlapping uncoupled inductors for low-cost multi-frequency voltage-controlled oscillators 有权
    用于低成本多频电压控制振荡器的重叠非耦合电感器

    公开(公告)号：US09543892B1

    公开(公告)日：2017-01-10

    申请号：US14801535

    申请日：2015-07-16

    Applicant: QUALCOMM Incorporated

    Inventor： Mohammad Farazian ,  Amirpouya Kavousian ,  Alireza Khalili

    IPC: H03B5/08 ,  H03B5/12

    CPC classification number: H03B5/1256 ,  H03B5/08 ,  H03B5/12 ,  H03B5/1206

    Abstract: Certain aspects of the present disclosure provide techniques and apparatus for generating multiple oscillating signals. One example circuit generally includes a first voltage-controlled oscillator (VCO) having a first inductor and a second VCO having a second inductor in parallel with a third inductor, wherein the second and third inductors are disposed inside a loop of the first inductor and may behave as a magnetic dipole. The loop of the first inductor may be symmetrical, and a combined geometry of loops of the second and third inductors may be symmetrical. The coupling coefficient (k) between the first inductor and a combination of the second and third inductors may be small (e.g., k

    Abstract translation: 本公开的某些方面提供了用于产生多个振荡信号的技术和装置。 一个示例电路通常包括具有第一电感器的第一压控振荡器（VCO）和具有与第三电感器并联的第二电感器的第二VCO，其中第二和第三电感器设置在第一电感器的环路内，并且可以 表现为磁偶极子。 第一电感器的环路可以是对称的，并且第二和第三电感器的环路的组合几何形状可以是对称的。 由于电路布局的对称几何形状，第一电感器和第二和第三电感器的组合之间的耦合系数（k）可能很小（例如，k <0.01）。 利用较小的k，第一和第二VCO的电感器可以彼此更靠近地放置，从而减少两个VCO消耗的面积。

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