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公开(公告)号：US08238469B2
公开(公告)日：2012-08-07
申请号：US12061088
申请日：2008-04-02
IPC分类号： H04L27/00
CPC分类号： H03D7/166 , H04L27/38 , H04L27/3863 , H04L27/3872
摘要： A radio frequency transmission module is adapted to generate a first signal to be transmitted and to convert the signal to a radio frequency carrier for its radio transmission, in an operational phase, and is adapted to generate a second signal and to convert the second signal to the radio frequency carrier, in a calibration phase. The module includes a calibration unit having a subsampler adapted to subsample the second converted signal and a calculation unit adapted to calculate Fourier Transform coefficients representative of the signal delivered by the subsampler, for the purposes of processing the first signal to be transmitted, in the operational phase, as a function of at least some of the Fourier coefficients calculated in the calibration phase.
摘要翻译： 射频传输模块适于产生待发射的第一信号，并在操作阶段将该信号转换成用于其无线电传输的射频载波，并适于产生第二信号并将第二信号转换为 在射频载波中，在校准阶段。 模块包括具有适于对第二转换信号进行二次采样的二次采样器的校准单元，以及计算单元，用于计算代表由二次采样器传送的信号的傅里叶变换系数，以便在操作中处理要发送的第一信号 作为在校准阶段中计算的至少一些傅立叶系数的函数的相位。
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公开(公告)号：US20080253473A1
公开(公告)日：2008-10-16
申请号：US12061088
申请日：2008-04-02
IPC分类号： H04L27/04
CPC分类号： H03D7/166 , H04L27/38 , H04L27/3863 , H04L27/3872
摘要： A radio frequency transmission module is adapted to generate a first signal to be transmitted and to convert the signal to a radio frequency carrier for its radio transmission, in an operational phase, and is adapted to generate a second signal and to convert the second signal to the radio frequency carrier, in a calibration phase. The module includes a calibration unit having a subsampler adapted to subsample the second converted signal and a calculation unit adapted to calculate Fourier Transform coefficients representative of the signal delivered by the subsampler, for the purposes of processing the first signal to be transmitted, in the operational phase, as a function of at least some of the Fourier coefficients calculated in the calibration phase.
摘要翻译： 射频传输模块适于产生待发射的第一信号，并在操作阶段将该信号转换成用于其无线电传输的射频载波，并适于产生第二信号并将第二信号转换为 在射频载波中，在校准阶段。 模块包括具有适于对第二转换信号进行二次采样的二次采样器的校准单元，以及计算单元，用于计算代表由二次采样器传送的信号的傅里叶变换系数，以便在操作中处理要发送的第一信号 作为在校准阶段中计算的至少一些傅立叶系数的函数的相位。
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公开(公告)号：US5867066A
公开(公告)日：1999-02-02
申请号：US631733
申请日：1996-04-11
摘要： A current amplifier includes a cascode transistor for fixing the voltage of an input of the amplifier; a first constant current source connected between the input and a first supply voltage; a second constant current source, for providing a current lower than the first current source, connected between a second supply voltage and the cascode transistor; a second transistor, of different type than the cascode transistor, connected between the input and the second supply voltage, and controlled by the node between the cascode transistor and the second current source; and an output transistor of same type as the second transistor, connected to the second supply voltage and controlled by the node.
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公开(公告)号：US5815103A
公开(公告)日：1998-09-29
申请号：US634306
申请日：1996-04-16
CPC分类号： H03M1/745
摘要： A digital-to-analog converter that includes pairs of positive and negative current sources that are connected through switches to two differential output lines. The switches are controlled as a function of a digital data. Each pair of current sources includes a pair of transistors of an output stage of a transconductance amplifier. The transconductance amplifier receives a reference voltage at a non-inverting input, and receives at an inverting input, the voltage at the middle node of a bridge of resistors that is connected between the two differential out-put lines. The output of the converter is the voltage between the two differential output lines.
摘要翻译： 一个数模转换器，包括通过开关连接到两个差分输出线的正和负电流源对。 开关作为数字数据的功能进行控制。 每对电流源包括跨导放大器的输出级的一对晶体管。 跨导放大器在非反相输入端接收参考电压，并在反相输入端接收连接在两个差分输出线之间的电阻桥的中间节点处的电压。 转换器的输出是两个差分输出线之间的电压。
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15.发明授权Method of enhancing the noise immunity of a phase-locked loop, and device implementing this method 失效提高锁相环噪声抗扰度的方法，以及实现该方法的装置
公开(公告)号：US5663688A
公开(公告)日：1997-09-02
申请号：US553376
申请日：1996-04-02
CPC分类号： H04N5/126 , H03L7/085 , H03L7/14 , H03L7/191 , H03L7/0891
摘要： The present invention relates to a method of enhancing the noise Immunity of a phase-locked loop. The phase-locked loop includes a comparator and apparatus for inhibiting the action of the comparator on the phase-locked loop. According to the method, the inhibition is lifted during a main time window resulting from the intersection of a first time window derived from the input signal of the phase-locked loop, and of a second time window derived from the loop-return signal.
摘要翻译： PCT No.PCT / FR94 / 00659 Sec。 371日期：1996年4月2日 102（e）日期1996年4月2日PCT提交1994年6月3日PCT公布。 WO94 / 29964 PCT公开号 日期1994年12月22日本发明涉及增强锁相环噪声抗扰度的方法。 锁相环包括用于抑制比较器在锁相环上的动作的比较器和装置。 根据该方法，在由从锁相环的输入信号导出的第一时间窗口与从循环返回信号导出的第二时间窗口的交点产生的主时间窗口期间，禁止被提升。
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