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8 条记录 (耗时 0.013 秒)

    SYSTEM AND METHOD FOR SHARING CIRCUITRY BETWEEN TRANSMIT AND RECEIVE PATH
    1.
    发明申请
    SYSTEM AND METHOD FOR SHARING CIRCUITRY BETWEEN TRANSMIT AND RECEIVE PATH 有权

    公开(公告)号：US20220376731A1

    公开(公告)日：2022-11-24

    申请号：US17324378

    申请日：2021-05-19

    申请人： QUALCOMM INCORPORATED

    发明人： Jinbo LI ,  Sean Joel LYN ,  Ara BICAKCI

    IPC分类号： H04B1/40 ,  H04L5/14 ,  H04B1/04 ,  H04L25/02 ,  H04B1/26

    摘要： A transceiver circuit includes transmit circuitry comprising a transmit baseband filter and a driver amplifier having an output coupled to a power amplifier, receive circuitry comprising a low noise amplifier and a receive baseband filter, mixer circuitry and a magnetic circuit, wherein the mixer circuitry and the magnetic circuit are coupled between the transmit baseband filter and the driver amplifier, and are further coupled between the low noise amplifier and the receive baseband filter, wherein the mixer circuitry and the magnetic circuit are shared between the transmit circuitry and the receive circuitry in a time division duplexing (TDD) communication system.

    MODULATOR
    4.
    发明申请
    MODULATOR 审中-公开

    公开(公告)号：US20190393838A1

    公开(公告)日：2019-12-26

    申请号：US16013605

    申请日：2018-06-20

    申请人： QUALCOMM Incorporated

    发明人： Efthymios Philip PAPAGEORGIOU ,  Ara BICAKCI ,  Sean Joel LYN ,  Yue LU ,  Ngar Loong Alan CHAN

    IPC分类号： H03C1/54 ,  H03F3/217 ,  H04L27/36

    摘要： A modulator may include a controller configured to receive in-phase (I) baseband signals and quadrature-phase (Q) baseband signals. The controller may be configured to select a section of a region defined by a number of local oscillator (LO) phases. The controller may be configured to output multiple control signals and a pair of phase selection signals. The modulator may further include multiple output stages. Each output stage may be coupled to the controller to receive a pair of the control signals, the pair of phase selection signals, and multiple offset LO signals. Each of the output stages may include a unit element.

    LEAKAGE COMPENSATION CIRCUIT FOR PHASE-LOCKED LOOP (PLL) LARGE THIN OXIDE CAPACITORS
    6.
    发明申请
    LEAKAGE COMPENSATION CIRCUIT FOR PHASE-LOCKED LOOP (PLL) LARGE THIN OXIDE CAPACITORS 审中-公开
    用于相位锁定环路（PLL）的大型氧化物电容器的泄漏补偿电路

    公开(公告)号：US20160373116A1

    公开(公告)日：2016-12-22

    申请号：US15257578

    申请日：2016-09-06

    申请人： QUALCOMM Incorporated

    发明人： Mohammad Bagher VAHID FAR ,  Ara BICAKCI ,  Alireza KHALILI ,  Ashkan BORNA ,  Thinh Cat NGUYEN

    IPC分类号： H03L7/08 ,  H03L7/089 ,  H03L7/093 ,  H02M3/07

    CPC分类号： H03L7/0802 ,  H02M3/07 ,  H03L7/0891 ,  H03L7/093

    摘要： Certain aspects of the present disclosure provide methods and apparatus for compensating, or at least adjusting, for capacitor leakage. One example method generally includes determining a leakage voltage corresponding to a leakage current of a capacitor in a filter for a phase-locked loop (PLL), wherein the determining comprises closing a set of switches for discontinuous sampling of the leakage voltage; based on the sampled leakage voltage, generating a sourced current approximately equal to the leakage current; and injecting the sourced current into the capacitor.

    摘要翻译： 本公开的某些方面提供了用于补偿或至少调整电容器泄漏的方法和装置。 一个示例性方法通常包括确定对应于用于锁相环（PLL）的滤波器中的电容器的漏电流的泄漏电压，其中所述确定包括闭合一组开关以不连续地采样泄漏电压; 基于采样的泄漏电压，产生大致等于泄漏电流的源电流; 并将源电流注入电容器。

    LOW NOISE PHASE LOCKED LOOPS
    7.
    发明申请
    LOW NOISE PHASE LOCKED LOOPS 审中-公开
    低噪音相位锁

    公开(公告)号：US20150318860A1

    公开(公告)日：2015-11-05

    申请号：US14266730

    申请日：2014-04-30

    申请人： QUALCOMM Incorporated

    发明人： Shen WANG ,  Jeongsik YANG ,  Thinh Cat NGUYEN ,  Ara BICAKCI ,  Anup SAVLA

    IPC分类号： H03L7/099 ,  H03L7/093 ,  H03L7/089

    CPC分类号： H03L7/0891 ,  H03L7/1976

    摘要： Aspects of circuits and methods for generating an oscillating signal are disclosed. The circuit includes a phase detector configured to output first and second signals responsive to a phase difference between two input signals. The phase detector is further configured to disable the first signal when outputting the second signal and to disable the second signal when outputting the first signal. The circuit further includes a voltage controlled oscillator (VCO) configured to generate an oscillating signal having a tunable frequency responsive to the first and second signals.

    摘要翻译： 公开了用于产生振荡信号的电路和方法。 该电路包括相位检测器，被配置为响应于两个输入信号之间的相位差而输出第一和第二信号。 相位检测器还被配置为当输出第二信号时禁止第一信号，并且当输出第一信号时禁止第二信号。 电路还包括压控振荡器（VCO），其被配置为产生响应于第一和第二信号的具有可调谐频率的振荡信号。

    LOW NOISE AND LOW POWER VOLTAGE-CONTROLLED OSCILLATOR (VCO) USING TRANSCONDUCTANCE (gm) DEGENERATION
    8.
    发明申请
    LOW NOISE AND LOW POWER VOLTAGE-CONTROLLED OSCILLATOR (VCO) USING TRANSCONDUCTANCE (gm) DEGENERATION 有权
    低噪声和低功耗电压控制振荡器（VCO）使用TRANSCONDUCTANCE（gm）DEGENERATION

    公开(公告)号：US20150263671A1

    公开(公告)日：2015-09-17

    申请号：US14204542

    申请日：2014-03-11

    申请人： QUALCOMM Incorporated

    发明人： Thinh Cat NGUYEN ,  Jeongsik YANG ,  Roger Thomas BROCKENBROUGH ,  Ara BICAKCI ,  Anup SAVLA ,  Shen WANG

    IPC分类号： H03B5/12 ,  H04B1/40

    CPC分类号： H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1237 ,  H03B5/1262 ,  H03B5/1278 ,  H03B5/1287 ,  H03B2200/0038 ,  H03B2200/0082 ,  H03B2200/009 ,  H04B1/40

    摘要： Certain aspects of the present disclosure generally relate to voltage-controlled oscillators (VCOs) using a lowered or an adjustable negative transconductance (−gm) compared to conventional VCOs. This −gm degeneration technique suppresses the noise injected into an inductor-capacitor (LC) tank of the VCO, thereby providing lower signal-to-noise ratio (SNR) for a given VCO voltage swing, lower power consumption, and decreased phase noise. One example VCO generally includes a resonant tank circuit, an active negative transconductance circuit connected with the resonant tank circuit, and a bias current circuit for sourcing or sinking a bias current through the resonant tank circuit and the active negative transconductance circuit to generate an oscillating signal. The active negative transconductance circuit includes cross-coupled transistors and an impedance connected between the cross-coupled transistors and a reference voltage.

    摘要翻译： 本公开的某些方面通常涉及使用与常规VCO相比降低或可调负负跨导（-gm）的压控振荡器（VCO）。 该-gm退化技术抑制注入到VCO的电感 - 电容（LC）槽中的噪声，从而为给定的VCO电压摆幅提供较低的信噪比（SNR），降低功耗，降低相位噪声。 一个示例VCO通常包括谐振回路电路，与谐振回路连接的有源负跨导电路以及用于通过谐振回路和有源负跨导电路来产生或吸收偏置电流的偏置电流电路，以产生振荡信号 。 有源负跨导电路包括交叉耦合晶体管和连接在交叉耦合晶体管与参考电压之间的阻抗。