LOW POWER WIDEBAND LO USING TUNED INJECTION LOCKED OSCILLATOR
    11.
    发明申请
    LOW POWER WIDEBAND LO USING TUNED INJECTION LOCKED OSCILLATOR 有权
    低功率宽带使用调谐注射锁定振荡器

    公开(公告)号:US20120262239A1

    公开(公告)日:2012-10-18

    申请号:US13086325

    申请日:2011-04-13

    IPC分类号: H03L7/00

    摘要: A tunable Injection-Locked Oscillator (ILO) having a wide locking range is used in a Local Oscillator (LO) of a wideband wireless transceiver to generate differential signals. The ILO includes a resonator with an adjustable natural oscillating frequency. In one example, the ILO is part of a quadrature divider that can lock onto a Phase-Locked Loop (PLL) output signal in a wide frequency band while achieving lower power consumption and lower phase noise than a differential latch type divider. The ILO is tuned by disabling a Voltage-Controlled Oscillator (VCO) from driving the ILO, adjusting the natural oscillating frequency, making a measurement indicative of the natural oscillating frequency, and determining whether the measurement is within a predetermined range. If the measurement is below the predetermined range, capacitances of resonators within the ILO are decreased, whereas if the measurement is above the predetermined range, capacitances of the resonators are increased.

    摘要翻译: 在宽带无线收发器的本地振荡器(LO)中使用具有宽锁定范围的可调注入锁定振荡器(ILO)以产生差分信号。 国际劳工组织包括具有可调节的自然振荡频率的谐振器。 在一个示例中,国际劳工组织是正交分频器的一部分,其可以在宽频带内锁定锁相环(PLL)输出信号,同时实现比差分锁存器类型分频器更低的功耗和更低的相位噪声。 国际劳工组织通过禁用驱动国际劳工组织的电压控制振荡器(VCO)进行调整,调整自然振荡频率,进行表示自然振荡频率的测量,以及确定测量是否在预定范围内。 如果测量低于预定范围,则国际劳工组织内的谐振器的电容减小,而如果测量高于预定范围,则谐振器的电容增加。

    VCO capacitor bank trimming and calibration
    12.
    发明授权
    VCO capacitor bank trimming and calibration 有权
    VCO电容器组修整和校准

    公开(公告)号:US07855610B2

    公开(公告)日:2010-12-21

    申请号:US12116527

    申请日:2008-05-07

    IPC分类号: H03B5/08

    CPC分类号: H03L7/099 H03L7/10

    摘要: Techniques are disclosed for trimming a capacitance associated with a capacitor bank for use in a voltage-controlled oscillator (VCO). In an embodiment, each capacitance is sub-divided into a plurality of constituent capacitances. The constituent capacitances may be selectively enabled or disabled to trim the step sizes of the capacitor bank. Further techniques are disclosed for calibrating the trimmable capacitance to minimize step size error for the capacitor bank.

    摘要翻译: 公开了用于修整与用于压控振荡器(VCO)的电容器组相关的电容的技术。 在一个实施例中,每个电容被细分成多个组成电容。 可以选择性地使能或禁用构成电容来修整电容器组的步长。 公开了用于校准可调整电容以最小化电容器组的步长误差的其它技术。

    Auxiliary varactor for temperature compensation
    13.
    发明授权
    Auxiliary varactor for temperature compensation 有权
    用于温度补偿的辅助变容二极管

    公开(公告)号:US08022780B2

    公开(公告)日:2011-09-20

    申请号:US12107592

    申请日:2008-04-22

    IPC分类号: H03L1/02

    CPC分类号: H03L1/023 H03L1/025

    摘要: Techniques for compensating for the effects of temperature change on voltage controlled oscillator (VCO) frequency are disclosed. In an embodiment, an auxiliary varactor is coupled to an LC tank of the VCO. The auxiliary varactor has a capacitance controlled by a temperature-dependant control voltage to minimize the overall change in VCO frequency with temperature. Techniques for generating the control voltage using digital and analog means are further disclosed.

    摘要翻译: 公开了用于补偿温度变化对压控振荡器(VCO)频率的影响的技术。 在一个实施例中,辅助变容二极管耦合到VCO的LC箱。 辅助变容二极管具有由温度依赖控制电压控制的电容,以最小化VCO频率随温度的总体变化。 进一步公开了使用数字和模拟装置产生控制电压的技术。

    VCO TUNING WITH TEMPERATURE COMPENSATION
    14.
    发明申请
    VCO TUNING WITH TEMPERATURE COMPENSATION 审中-公开
    VCO调谐与温度补偿

    公开(公告)号:US20100225402A1

    公开(公告)日:2010-09-09

    申请号:US12400658

    申请日:2009-03-09

    IPC分类号: H03L7/00

    摘要: Techniques for setting a fine tuning input signal Vtune for a voltage-controlled oscillator (VCO) in a coarse tuning mode of the VCO. In an exemplary embodiment, the fine tuning input signal during coarse tuning mode is made temperature-dependent to account for possible variation of Vtune over temperature during fine tuning mode. Methods and apparatuses employing the techniques are further described.

    摘要翻译: 在VCO的粗调模式下为压控振荡器(VCO)设置微调输入信号Vtune的技术。 在一个示例性实施例中,在微调模式期间,微调输入信号变得温度依赖于在微调模式期间Vtune随温度的可能变化。 进一步描述采用这些技术的方法和装置。

    VCO CAPACITOR BANK TRIMMING AND CALIBRATION
    15.
    发明申请
    VCO CAPACITOR BANK TRIMMING AND CALIBRATION 有权
    VCO电容器银行校准和校准

    公开(公告)号:US20090278620A1

    公开(公告)日:2009-11-12

    申请号:US12116527

    申请日:2008-05-07

    IPC分类号: H03L7/099

    CPC分类号: H03L7/099 H03L7/10

    摘要: Techniques are disclosed for trimming a capacitance associated with a capacitor bank for use in a voltage-controlled oscillator (VCO). In an embodiment, each capacitance is sub-divided into a plurality of constituent capacitances. The constituent capacitances may be selectively enabled or disabled to trim the step sizes of the capacitor bank. Further techniques are disclosed for calibrating the trimmable capacitance to minimize step size error for the capacitor bank.

    摘要翻译: 公开了用于修整与用于压控振荡器(VCO)的电容器组相关的电容的技术。 在一个实施例中,每个电容被细分成多个组成电容。 可以选择性地使能或禁用构成电容来修整电容器组的步长。 公开了用于校准可调整电容以最小化电容器组的步长误差的其它技术。

    System for I-Q phase mismatch detection and correction
    16.
    发明授权
    System for I-Q phase mismatch detection and correction 有权
    用于I-Q相位失配检测和校正的系统

    公开(公告)号:US08854098B2

    公开(公告)日:2014-10-07

    申请号:US13011716

    申请日:2011-01-21

    摘要: System for I-Q phase mismatch detection and correction. An apparatus to correct a phase mismatch between I and Q signals includes a correction circuit configured to continuously compare a reference signal and a phase error signal associated with the I and Q signals to generate an I bias signal and a Q bias signal, a first CMOS buffer configured to receive the I signal and the I bias signal and output a phase adjusted I signal based on the I bias signal, and a second CMOS buffer configured to receive the Q signal and the Q bias signal and output a phase adjusted Q signal based on the Q bias signal.

    摘要翻译: 用于I-Q相位失配检测和校正的系统。 用于校正I和Q信号之间的相位失配的装置包括校正电路,被配置为连续地比较参考信号和与I和Q信号相关联的相位误差信号,以产生I偏置信号和Q偏置信号,第一CMOS 缓冲器,被配置为接收I信号和I偏置信号,并且基于I偏置信号输出相位调整的I信号;以及第二CMOS缓冲器,被配置为接收Q信号和Q偏置信号,并输出基于相位的Q信号 对Q偏置信号。

    Fast-switching low-noise charge pump
    17.
    发明授权
    Fast-switching low-noise charge pump 有权
    快速切换低噪声电荷泵

    公开(公告)号:US08552774B2

    公开(公告)日:2013-10-08

    申请号:US13208456

    申请日:2011-08-12

    IPC分类号: H03L7/06

    CPC分类号: H03L7/0896 H03L7/18

    摘要: In one embodiment of the invention, a method for a charge pump is disclosed. The method includes biasing a plurality of transistors; switching a pair of main transistor switches to apply or remove a net charge on an output terminal though the biased transistors; and turning on auxiliary transistor switches when the main transistor switches are turned off. The auxiliary transistor switches when turned on provide an auxiliary equalizing path to nodes between the main transistor switches and the biased transistors. The auxiliary equalizing path equalizes voltages between the intermediate nodes to rapidly turn off the biased transistors and reduce noise on the output terminal of the charge pump.

    摘要翻译: 在本发明的一个实施例中,公开了一种用于电荷泵的方法。 该方法包括偏置多个晶体管; 切换一对主晶体管开关以通过偏置晶体管施加或去除输出端子上的净电荷; 并且当主晶体管开关断开时,接通辅助晶体管开关。 辅助晶体管开关导通时,为主晶体管开关和偏置晶体管之间的节点提供辅助均衡通路。 辅助均衡路径均衡中间节点之间的电压,以快速关闭偏置晶体管,并降低电荷泵输出端子上的噪声。

    Fast-switching low-noise charge pump
    18.
    发明授权
    Fast-switching low-noise charge pump 有权
    快速切换低噪声电荷泵

    公开(公告)号:US08018269B2

    公开(公告)日:2011-09-13

    申请号:US11953575

    申请日:2007-12-10

    IPC分类号: G05F1/10

    CPC分类号: H03L7/0896 H03L7/18

    摘要: In one embodiment of the invention, a method for a charge pump is disclosed. The method includes biasing a plurality of transistors; switching a pair of main transistor switches to apply or remove a net charge on an output terminal though the biased transistors; and turning on auxiliary transistor switches when the main transistor switches are turned off. The auxiliary transistor switches when turned on provide an auxiliary equalizing path to nodes between the main transistor switches and the biased transistors. The auxiliary equalizing path equalizes voltages between the intermediate nodes to rapidly turn off the biased transistors and reduce noise on the output terminal of the charge pump.

    摘要翻译: 在本发明的一个实施例中,公开了一种用于电荷泵的方法。 该方法包括偏置多个晶体管; 切换一对主晶体管开关以通过偏置晶体管施加或去除输出端子上的净电荷; 并且当主晶体管开关断开时,接通辅助晶体管开关。 辅助晶体管开关导通时,为主晶体管开关和偏置晶体管之间的节点提供辅助均衡通路。 辅助均衡路径均衡中间节点之间的电压,以快速关闭偏置晶体管,并降低电荷泵输出端子上的噪声。