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    HIGH RESOLUTION AUTO-TUNING FOR A VOLTAGE CONTROLLED OSCILLATOR
    1.
    发明授权
    HIGH RESOLUTION AUTO-TUNING FOR A VOLTAGE CONTROLLED OSCILLATOR 有权

    公开(公告)号：EP1943737B1

    公开(公告)日：2018-12-05

    申请号：EP06825983.7

    申请日：2006-10-13

    申请人： Skyworks Solutions, Inc.

    发明人： WANG, Hua ,  RIPLEY, David, S. ,  ROLL, Bryan, J.

    IPC分类号： H03L7/02 ,  H03L7/193 ,  H03L7/187

    CPC分类号： H03L7/0992 ,  H03B1/00 ,  H03B5/1265 ,  H03B5/1271 ,  H03L1/00 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18 ,  H03L7/187 ,  H03L7/193

    摘要： According to one exemplary embodiment, an auto-tuning circuit (104) coupled to a voltage controlled oscillator (102) in a phase locked loop, where the voltage controlled oscillator is coupled to a capacitor array (105), includes a prescaler circuit (106) configured to provide a divided voltage controlled oscillator frequency, where the prescaler circuit is used in the phase locked loop during fine tuning of the voltage controlled oscillator in the auto-tuning circuit during coarse tuning of the voltage controlled oscillator. The auto-tuning circuit further includes a digital processing logic circuit (108) coupled to the prescaler circuit and configured to determine a capacitance of the capacitor array by comparing comp_cnt to a predetermined value, where comp_cnt is determined by a number of cycles of the divided voltage controlled oscillator frequency that occur in a calibration interval.

    DUAL MODE POWER AMPLIFIER
    2.
    发明公开
    DUAL MODE POWER AMPLIFIER 审中-公开
    具有双模式功率放大器

    公开(公告)号：EP1941612A2

    公开(公告)日：2008-07-09

    申请号：EP06825602.3

    申请日：2006-10-06

    申请人： Skyworks Solutions, Inc.

    发明人： HAGEMAN, Michael, L. ,  BRANDT, Dale, R. ,  RIPLEY, David, S.

    IPC分类号： H03G5/16

    CPC分类号： H03G3/3042 ,  H03F1/0277 ,  H03F3/211 ,  H03F3/72 ,  H03F2200/222 ,  H03F2200/387 ,  H03F2203/7206 ,  H03F2203/7239

    摘要： A power amplifier (202, 330) is configured to operate in a first gain mode and a second gain mode. A first power amplifier input stage (208, 308) has an input and an output. A second power amplifier input stage (210, 310) has an input and an output, where the output of the second power amplifier input stage is coupled to the output of the first power amplifier input stage. The first input stage is turned on in response to a first bias voltage (222, 322) in the first gain mode and the second input stage is turned on in response to a second bias voltage (224, 324) in the second gain mode. Alternatively, a first input stage (208, 308) and an intermediate stage (212, 312) can be switched off by turning off their respective bias voltages (222, 322, 226, 326), and a second input stage (210, 310) can be switched on by turning on its respective bias voltage (224, 324); the intermediate stage and the second input stage sharing a common output.

    POWER CONTROL CIRCUIT FOR ACCURATE CONTROL OF POWER AMPLIFIER OUTPUT POWER
    4.
    发明公开
    POWER CONTROL CIRCUIT FOR ACCURATE CONTROL OF POWER AMPLIFIER OUTPUT POWER 审中-公开
    电源控制电路用于精确控制电源放大器的输出功率

    公开(公告)号：EP1851852A2

    公开(公告)日：2007-11-07

    申请号：EP06718567.8

    申请日：2006-01-17

    申请人： Skyworks Solutions, Inc.

    发明人： RIPLEY, David, S.

    IPC分类号： H03G3/10

    CPC分类号： H03F1/0216 ,  H03F2200/426 ,  H03F2200/462 ,  H03F2200/471 ,  H03F2200/474 ,  H03G3/004

    摘要： According to an exemplary embodiment, an amplification module includes a power control circuit. The amplification module further includes a power amplifier coupled to the power control circuit and configured to draw a supply current and receive a supply voltage from the power control circuit. The power control circuit is configured to control a DC power provided to the power amplifier by controlling a product of a sense current, which is a mirror current of the supply current, and the supply voltage. The power control circuit includes a feedback voltage that corresponds to the product of the sense current and the supply voltage. The power control circuit further includes an analog multiplier circuit configured to receive the sense current and the supply voltage and generate the feedback voltage. The power control circuit further includes a differential error amplifier configured to compare the feedback voltage to a control voltage.

    SYSTEMS AND METHODS FOR SATURATION DETECTION AND CORRECTION IN A POWER CONTROL LOOP
    6.
    发明公开
    SYSTEMS AND METHODS FOR SATURATION DETECTION AND CORRECTION IN A POWER CONTROL LOOP 有权
    系统和饱和度的检测方法和更正在功率控制回路

    公开(公告)号：EP2171841A2

    公开(公告)日：2010-04-07

    申请号：EP08772403.5

    申请日：2008-07-03

    申请人： Skyworks Solutions, Inc.

    发明人： RIPLEY, David, S. ,  PHILLIPS, Kerry, B.

    IPC分类号： H03F3/20

    CPC分类号： H03F3/20 ,  H03F1/52 ,  H03F2200/66 ,  H03G3/3042 ,  H03G3/3047

    摘要： Systems and methods are described for detecting and correcting saturation in a power amplification circuit. An exemplary circuit comprises a power amplifier that provides an amplified output signal based upon an input signal and a gain control signal; a power detector that provides a detector signal indicative of the amplified signal magnitude; an error amplifier that generates the gain control signal based upon a setpoint signal and the detector signal; and a saturation detector that provides a saturation detection signal indicating whether gain control signal exceeds a reference signal. In another embodiment the circuit comprises an offset generator that provides a correction to the setpoint signal in response to the saturation detection signal indicating that the gain control signal exceeds the reference signal. In still another embodiment the circuit includes an offset cutoff circuit that freezes the correction to the setpoint signal in response to the correction exceeding a threshold.

    MULTIMODE AMPLIFIER FOR OPERATION IN LINEAR AND SATURATED MODES
    7.
    发明公开
    MULTIMODE AMPLIFIER FOR OPERATION IN LINEAR AND SATURATED MODES 有权
    更多MODE BOOSTER FOR USE线性和饱和模式

    公开(公告)号：EP2115869A1

    公开(公告)日：2009-11-11

    申请号：EP07862456.6

    申请日：2007-12-04

    申请人： Skyworks Solutions, Inc.

    发明人： RIPLEY, David, S. ,  REGINELLA, Pat

    IPC分类号： H03F3/20

    CPC分类号： H03F3/19 ,  H03F1/0233

    摘要： According to an exemplary embodiment, a multimode power amplifier configured to receive an RF input signal and provide an RF output signal in linear and saturated operating modes includes an output stage configured to receive a fixed supply voltage and to provide the RF output signal. The multimode power amplifier further includes at least one driver stage coupled to the output stage, where the at least one driver stage is configured to receive the RF input signal and an adjustable supply voltage. The adjustable supply voltage controls an RF output power of the RF output signal when the multimode power amplifier is in the saturated operating mode. The at least one driver and the output stage are each biased by a low impedance voltage in the linear and saturated operating modes. The adjustable supply voltage can be controlled by a fixed control voltage in the linear operating mode.

    AUTOMATIC BIAS CONTROL CIRCUIT FOR LINEAR POWER AMPLIFIERS
    8.
    发明公开
    AUTOMATIC BIAS CONTROL CIRCUIT FOR LINEAR POWER AMPLIFIERS 有权
    自动偏置控制电路线性功率放大器

    公开(公告)号：EP1897216A2

    公开(公告)日：2008-03-12

    申请号：EP06774014.2

    申请日：2006-06-23

    申请人： Skyworks Solutions, Inc.

    发明人： RIPLEY, David, S. ,  ANDRYS, Paul, R. ,  NELLIS, Keith

    IPC分类号： H03F3/30

    CPC分类号： H03F1/0261 ,  H03F1/0272 ,  H03F1/30 ,  H03F1/32 ,  H03F2200/435 ,  H03F2200/78 ,  H03F2200/99

    摘要： According to an exemplary embodiment, an amplification module includes a power amplifier (106) configured to receive an RF input signal and provide an RF output signal. The amplification module further includes an autobias control circuit (102) configured to receive and convert the Rf output signal to a control signal. The control signal can cause the power amplifeir to have a quiescent current that increases substantially linearly in response to an increase in the RF output power of the RF signal. The autobias control circuit can include a peak detector/log converter circuit coupled to a first input of a differential amplifier, where the differential amplifier outputs the control signal. The autobias control circuit can further include a DC reference circuit coupled to a second input of the differential amplifier. The amplification module further includes an analog bias circuit (104) coupling the control voltage to a bias input of said power amplifier.