Low distortion radio frequency (RF) limiter
    31.
    发明授权
    Low distortion radio frequency (RF) limiter 有权
    低失真射频(RF)限幅器

    公开(公告)号:US07894772B2

    公开(公告)日:2011-02-22

    申请号:US11771106

    申请日:2007-06-29

    Applicant: Ichiro Aoki

    Inventor: Ichiro Aoki

    Abstract: A limiter for minimizing an amount of phase change caused by input amplitude variation includes a variable gain amplifier configured to receive a signal having an amplitude component and a phase component and having a gain controlled by a compensation capacitance and a variable resistance, in which the compensation capacitance minimizes an effect of parasitic capacitance and the variable resistance adjusts a gain in the variable gain amplifier such that the amplitude component at an output of the variable gain amplifier remains substantially constant.

    Abstract translation: 用于最小化由输入幅度变化引起的相位量的限幅器包括可变增益放大器,其被配置为接收具有振幅分量和相位分量并且具有由补偿电容和可变电阻控制的增益的信号,其中补偿 电容最小化寄生电容的影响,并且可变电阻调节可变增益放大器中的增益,使得可变增益放大器的输出处的幅度分量保持基本上恒定。

    Low offset envelope detector and method of use
    32.
    发明授权
    Low offset envelope detector and method of use 有权
    低偏移包络检测器和使用方法

    公开(公告)号:US07710197B2

    公开(公告)日:2010-05-04

    申请号:US11827187

    申请日:2007-07-11

    Abstract: A system for processing a signal is provided. The system includes a differential amplifier receiving a radio-frequency input signal at a first differential input. A rectifying device such as a transistor has a control terminal that is coupled to an output of the differential amplifier and an output that is coupled to a second differential input of the differential amplifier. The second differential input of the differential amplifier receives a low frequency feedback signal from the output of the rectifying device, such as by damping the frequency response at the output of the rectifying device using a capacitor and a current source coupled to the output of the rectifying device.

    Abstract translation: 提供了一种用于处理信号的系统。 该系统包括在第一差分输入处接收射频输入信号的差分放大器。 诸如晶体管的整流装置具有耦合到差分放大器的输出的控制端和耦合到差分放大器的第二差分输入的输出。 差分放大器的第二差分输入端从整流装置的输出端接收低频反馈信号,例如通过使用电容器和整流装置的输出端耦合到电流源来衰减整流装置输出端的频率响应 设备。

    Method for Determination of Prognosis of Prostate Cancer, and Diagnostic Agent for Use in the Method
    33.
    发明申请
    Method for Determination of Prognosis of Prostate Cancer, and Diagnostic Agent for Use in the Method 有权
    测定前列腺癌预后的方法和方法中使用的诊断剂

    公开(公告)号:US20090305299A1

    公开(公告)日:2009-12-10

    申请号:US12225998

    申请日:2007-03-30

    CPC classification number: G01N33/57434

    Abstract: A method for determining probability that prostate cancer will metastasize, as well as a diagnostic reagent used therefor is disclosed. It was discovered that the percentage that NF-κB-p65/RelA has the 254th amino acid threonine which is phosphorylated is significantly higher in the prostate cancer cells in the cases where the bone metastasis was observed than in the cases where bone metastasis was not observed. Thus, the method for determining probability that prostate cancer will metastasize comprises measuring human NF-κB-p65/RelA in which 254th amino acid threonine is phosphorylated, which human NF-κB-p65/RelA is contained in a prostate tissue separated from human.

    Abstract translation: 公开了一种确定前列腺癌转移概率的方法以及用于其的诊断试剂。 发现在观察到骨转移的情况下,前列腺癌细胞中NF-κB-p65 / RelA具有磷酸化的第254位氨基酸苏氨酸的百分比明显高于未观察到骨转移的情况 。 因此,用于确定前列腺癌将转移的可能性的方法包括测量人类NF-κB-p65 / RelA,其中第254位氨基酸苏氨酸被磷酸化,人NF-κB-p65 / RelA包含在与人分离的前列腺组织中。

    System and method for power amplifier output power control
    34.
    发明授权
    System and method for power amplifier output power control 有权
    功率放大器输出功率控制的系统和方法

    公开(公告)号:US07486137B2

    公开(公告)日:2009-02-03

    申请号:US11655000

    申请日:2007-01-18

    Abstract: An architecture for detecting amplifier power is provided. The architecture includes a voltage envelope detector that receives a voltage signal and generates a voltage envelope signal. A current envelope detector receives a current signal and generates a current envelope signal. A power amplifier level controller receives the greater of the voltage envelope signal and the current envelope signal, such as by connecting the output of the voltage envelope detector and the current envelope detector at a common point and conducting the high frequency current components to ground via a capacitor. A power amplifier level control signal is then generated based on the voltage drop across the capacitor.

    Abstract translation: 提供了一种用于检测放大器功率的架构。 该架构包括电压包络检测器,其接收电压信号并产生电压包络信号。 电流包络检测器接收电流信号并产生电流包络信号。 功率放大器电平控制器接收较大的电压包络信号和电流包络信号,例如通过在公共点连接电压包络检测器的输出和电流包络检测器,并将高频电流分量经由 电容器。 然后基于电容器两端的电压降产生功率放大器电平控制信号。

    Radio front end with resonant transmit/receive switch
    35.
    发明申请
    Radio front end with resonant transmit/receive switch 有权
    无线电前端带有谐振发射/接收开关

    公开(公告)号:US20090017775A1

    公开(公告)日:2009-01-15

    申请号:US11827188

    申请日:2007-07-11

    CPC classification number: H04B1/44

    Abstract: A device having a radio front end is provided. The radio front end includes an inductor having a first end and a second end. A capacitor having a first end and a second end is connected to the second end of the inductor. An antenna is connected to the second end of the inductor and the second end of the capacitor. A first switch is connected to the first end of the inductor and the first end of the capacitor, wherein the inductor and capacitor form a resonant circuit when the first switch is closed. A second switch is connected to the resonant circuit, the second switch connecting the resonant circuit to ground through a low impedance when the first switch is closed. A third switch is connected to a transmit power amplifier connecting the transmit power amplifier to ground through a low impedance when the first switch is closed.

    Abstract translation: 提供具有无线电前端的设备。 无线电前端包括具有第一端和第二端的电感器。 具有第一端和第二端的电容器连接到电感器的第二端。 天线连接到电感器的第二端和电容器的第二端。 第一开关连接到电感器的第一端和电容器的第一端,其中当第一开关闭合时,电感器和电容器形成谐振电路。 第二开关连接到谐振电路,第二开关在第一开关闭合时通过低阻抗将谐振电路连接到地。 当第一开关闭合时,第三开关连接到通过低阻抗将发射功率放大器接地的发射功率放大器。

    Reconfigurable distributed active transformers
    37.
    发明授权
    Reconfigurable distributed active transformers 有权
    可重构分布式有源变压器

    公开(公告)号:US07330076B2

    公开(公告)日:2008-02-12

    申请号:US11544895

    申请日:2006-10-06

    Abstract: Reconfigurable distributed active transformers are provided. The exemplary embodiments provided allow changing of the effective number and configuration of the primary and secondary windings, where the distributed active transformer structures can be reconfigured dynamically to control the output power levels, allow operation at multiple frequency bands, maintain a high performance across multiple channels, and sustain desired characteristics across process, temperature and other environmental variations. Integration of the distributed active transformer power amplifiers and a low noise amplifier on a semiconductor substrate can also be provided.

    Abstract translation: 提供可重配置的分布式有源变压器。 提供的示例性实施例允许改变主和次级绕组的有效数量和配置,其中分布式有源变压器结构可以被动态地重新配置以控制输出功率电平,允许在多个频带上操作,在多个通道上保持高性能 并保持过程,温度和其他环境变化的期望特征。 还可以提供分布式有源变压器功率放大器和低噪声放大器在半导体衬底上的集成。

    Cross-differential amplifier
    39.
    发明申请
    Cross-differential amplifier 有权
    交叉差分放大器

    公开(公告)号:US20050275454A1

    公开(公告)日:2005-12-15

    申请号:US11208833

    申请日:2005-08-22

    Abstract: A cross-differential amplifier is provided. The cross-differential amplifier includes an inductor connected to a direct current power source at a first terminal. A first and second switch, such as transistors, are connected to the inductor at a second terminal. A first and second amplifier are connected at their supply terminals to the first and second switch. The first and second switches are operated to commutate the inductor between the amplifiers so as to provide an amplified signal while limiting the ripple voltage on the inductor and thus limiting the maximum voltage imposed across the amplifiers and switches.

    Abstract translation: 提供了一个交叉差分放大器。 交叉差分放大器包括在第一端子处连接到直流电源的电感器。 诸如晶体管的第一和第二开关在第二端子处连接到电感器。 第一和第二放大器在其电源端连接到第一和第二开关。 第一和第二开关被操作以在放大器之间换向电感器,以便提供放大的信号,同时限制电感器上的纹波电压,从而限制放大器和开关上施加的最大电压。

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