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107 条记录 (耗时 0.019 秒)

    DISPOSITIF HAUTE DYNAMIQUE POUR L'INTEGRATION D'UN COURANT ELECTRIQUE
    2.
    发明公开
    DISPOSITIF HAUTE DYNAMIQUE POUR L'INTEGRATION D'UN COURANT ELECTRIQUE 审中-公开
    VORRICHTUNG麻醉品HOHEM DYNAMIKUMFANG ZUR INTEGRATION EINES ELEKTRISCHEN STROMS

    公开(公告)号：EP3140906A1

    公开(公告)日：2017-03-15

    申请号：EP15759830.1

    申请日：2015-04-30

    申请人： ULIS

    发明人： ROBERT, Patrick

    IPC分类号： H03F3/00 ,  G01J5/24 ,  H03F3/04

    CPC分类号： H03F1/26 ,  G01J5/24 ,  H03F3/005 ,  H03F3/087 ,  H03F3/45071 ,  H03F2200/261 ,  H03F2200/264 ,  H03M1/182 ,  H03M1/50

    摘要： A device (60) for integrating an electrical current during a period
    T
    int , comprises an operational amplifier (62), and a capacitor (64) connected between a first input and an output of the amplifier (62), a second input of the amplifier (62) being brought to a voltage
    VBUS , the output voltage
    V
    out
    of the amplifier (62) saturating at a high voltage
    V
    SatH
    and at a low voltage
    V
    satH depending on the amount of charge on the capacitor (64). The device (60) also comprises: a circuit (72) for switching the terminals of the capacitor (64); and a circuit (74) for triggering the circuit (72) at least once during the period
    T
    int when the voltage
    V
    out
    is both increasing and substantially equal to a reference voltage
    VREF , said voltage
    VREF being lower than or equal to the voltage
    V
    satH
    , and the reference voltage
    VREF and the voltage
    VBUS (62) being chosen so as to respect relationship 2.
    VBUS - VREF ≥
    V
    satL ; and a circuit (76) for memorising the number of times the circuit (72) is triggered between the start time and end time of the integration period.

    摘要翻译： 一种用于在包括运算放大器和连接在放大器的第一输入和输出端之间的电容器之间的电压期间积分电流的装置，放大器的第二输入被取为电压VBUS，放大器的输出电压Vout 根据电容器中的电荷量，在高电压VsatH和低电压VsatH下饱和。 该装置还包括：用于切换电容器端子的电路; 以及用于在电压Vout均增加并且基本上等于参考电压VREF的期间Tint期间触发电路至少一次的电路，电压VREF小于或等于电压VsatH，参考电压VREF和电压VBUS被选择为 符合关系2·VBUS-VREF≧VsatL; 以及存储电路，用于存储在积分周期的初始时间和结束时间之间发生的触发次数。

    GUITAR AMPLIFIER
    3.
    发明公开
    GUITAR AMPLIFIER 审中-公开
    吉他功放

    公开(公告)号：EP2786485A4

    公开(公告)日：2016-07-27

    申请号：EP12853711

    申请日：2012-11-28

    申请人： QUILTER LABS LLC

    发明人： QUILTER PATRICK H

    IPC分类号： H03F3/04 ,  G10H1/16 ,  G10H3/18 ,  H03F3/217

    CPC分类号： G10H3/187 ,  G10H1/16 ,  G10H2210/311 ,  G10H2230/035 ,  H03F3/2173

    摘要： A device and methods are provided for a guitar amplifier. In one embodiment, an amplifier includes an overdrive shaping circuit including one or more elements for harmonic shaping of a received signal. The amplifier may also include a power amplifier circuit configured to receive the harmonic shaped signal from the overdrive shaping circuit, wherein the power amplifier circuit includes a switchmode amplifier to amplify the harmonic shaped signal includes one or more elements to increase the output impedance of the switchmode amplifier. An output of the amplifier can output a signal with desired harmonic shaping and a dynamic response.

    Low noise CMOS transmitter circuit with high range of gain
    6.
    发明公开
    Low noise CMOS transmitter circuit with high range of gain 审中-公开
    Rauscharme CMOS-Übertragungsschaltungmit hohemVerstärkungsbereich

    公开(公告)号：EP2469706A2

    公开(公告)日：2012-06-27

    申请号：EP12156934.7

    申请日：2007-04-24

    申请人： Icera Canada ULC

    发明人： Bellaouar, Abdellatif ,  Frechette, Michel J.G.J.P

    IPC分类号： H03F3/45 ,  H03F3/04 ,  H03G3/20 ,  H04B1/26

    CPC分类号： H03G1/04 ,  H03F1/26 ,  H03F3/24 ,  H03F3/347 ,  H03F3/45071 ,  H03F2200/162 ,  H03F2200/447

    摘要： The invention provides a method for controlling signal transmission gain in response to an input control signal comprising: a) receiving the input control signal; b) generating in response to temperature, a temperature compensated control voltage corresponding to the input control signal; c) linearizing the temperature compensated control voltage for generating a gain control voltage; and, d) controlling a gain circuit in sub-threshold in response to the gain control voltage.

    摘要翻译： 本发明提供一种响应于输入控制信号来控制信号传输增益的方法，包括：a）接收输入控制信号; b）响应于温度产生对应于输入控制信号的温度补偿控制电压; c）线性化用于产生增益控制电压的温度补偿控制电压; 以及d）响应于所述增益控制电压控制次阈值中的增益电路。

    Single supply direct drive amplifier
    7.
    发明公开
    Single supply direct drive amplifier 审中-公开
    单电源直接驱动放大器

    公开(公告)号：EP2204904A3

    公开(公告)日：2010-10-27

    申请号：EP10161051.7

    申请日：2005-07-29

    申请人： Maxim Integrated Products Inc.

    发明人： Doy, Tony ,  Koo, Ronald

    IPC分类号： H03F3/04

    CPC分类号： H03F3/04 ,  H03F1/0211 ,  H03F3/211 ,  H03F3/3069 ,  H03F3/45475 ,  H03F2200/03 ,  H03F2200/504 ,  H03F2200/96 ,  H04R3/007

    摘要： A driver amplifier operative from a single DC voltage supply, coupled directly to the output load without the need for DC coupling capacitors used for preventing DC reaching the output load. An onboard power supply generates a negative voltage rail that powers the output amplifiers, allowing driver amplifier operation from both positive and negative rails. Since the amplifiers can be biased at ground potential (0 volts), no significant DC voltage exists across the load and the need for DC coupling capacitors is eliminated.

    摘要翻译： 驱动器放大器采用直流单电源供电，直接与输出负载相连，无需使用直流耦合电容来防止直流输出负载。 板载电源产生一个为输出放大器供电的负电压轨，允许驱动放大器从正轨和负轨上运行。 由于放大器可以偏置在地电位（0伏），负载上不存在明显的直流电压，因此不需要直流耦合电容。

    CMOS TEMPERATURE COMPENSATED TRANSMITTER CIRCUIT WITH MERGED MIXER AND VARIABLE GAIN AMPLIFIER
    9.
    发明公开
    CMOS TEMPERATURE COMPENSATED TRANSMITTER CIRCUIT WITH MERGED MIXER AND VARIABLE GAIN AMPLIFIER 有权
    用旋转CMOS温度补偿的发射器电路倒塌可变增益放大器

    公开(公告)号：EP2016675A1

    公开(公告)日：2009-01-21

    申请号：EP07719624.4

    申请日：2007-04-24

    申请人： SiRiFIC Wireless Corporation

    发明人： BELLAOUAR, Abdellatif ,  FRECHETTE, Michel J.G.J.P.

    IPC分类号： H03F3/45 ,  H03F3/04 ,  H03G3/20 ,  H04B1/26

    CPC分类号： H03G1/04 ,  H03F1/26 ,  H03F3/24 ,  H03F3/347 ,  H03F3/45071 ,  H03F2200/162 ,  H03F2200/447

    摘要： A CMOS automatic gain control (AGC) circuit that receives an analog control voltage and generates a temperature compensated gain voltage to linearly control the gain of a variable gain circuit operating in the sub-threshold region. A PTAT circuit having a resistor network coupled to a current mirror circuit operating in the sub-threshold region establishes a current having an proportional relationship to temperature. This current is used as a supply for a voltage to voltage converter circuit which generates an intermediate voltage in response to the analog control voltage. A linearizing circuit operating in the sub-threshold region pre-conditions the intermediate voltage, which is then applied to a variable gain circuit. The variable gain circuit is operated in the sub-threshold region, and the preconditioned intermediate voltage will control the amount of gain to be substantially linear with respect to the analog control voltage, and with a range of about 85dB.

    METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING A TRANSMITTER'S IMPEDANCE AND IMPLEMENTING A HYBRID POWER AMPLIFIER THEREIN WHICH SELECTIVELY CONNECTS LINEAR AND SWITCH-MODE POWER AMPLIFIERS IN SERIES
    10.
    发明公开
    METHOD AND APPARATUS FOR DYNAMICALLY ADJUSTING A TRANSMITTER'S IMPEDANCE AND IMPLEMENTING A HYBRID POWER AMPLIFIER THEREIN WHICH SELECTIVELY CONNECTS LINEAR AND SWITCH-MODE POWER AMPLIFIERS IN SERIES 审中-公开
    用于动态设置的阻抗工作站，并实现混合功率放大器的方法和装置TO哪个线性和开关式电源转换器选择性的，系列将

    公开(公告)号：EP1741203A2

    公开(公告)日：2007-01-10

    申请号：EP05725937.6

    申请日：2005-03-18

    申请人： INTERDIGITAL TECHNOLOGY CORPORATION

    发明人： HAQUE, Tanbir ,  DEMIR, Alpaslan ,  KAZAKEVICH, Leonid ,  KLAHN, Gerald

    IPC分类号： H04B7/00 ,  H04B1/46 ,  H03F3/04 ,  H03F3/68

    CPC分类号： H04B1/0458 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/465 ,  H03G3/3042 ,  H04W52/52 ,  Y02D70/14

    摘要： A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.

    摘要翻译： 一种用于动态调整发射器的功率放大器（PA）和天线之间的阻抗的方法和设备，以有效地从PA传递功率到天线。 所述PA和天线之间的阻抗是基于功率电平的测量和/或PA的直流（DC）消耗测量，这取决于是否该PA是线性PA或开关模式PA调整。 在另一个中，混合PA实施例的包括一个第一级线性PA和第二级开关模式PA是在发射机执行。 混合动力PA选择性地将第一级线性PA的输出连接到第二级开关模式PA和混合PA的输出的输入端中的一个，这取决于第一级线性PA，输出功率的输出功率电平 混合PA，或通过一发射功率控制（TPC）命令所指示的要求的水平。