MULTI-FREQUENCY LOCAL OSCILLATORS
    1.
    发明申请
    MULTI-FREQUENCY LOCAL OSCILLATORS 审中-公开
    多频本地振荡器

    公开(公告)号:WO1996016472A1

    公开(公告)日:1996-05-30

    申请号:PCT/US1995015186

    申请日:1995-11-20

    CPC classification number: H03J5/24 H03B5/1876 H03B25/00 H03B2201/0275 H04B1/28

    Abstract: A multiple-frequency local oscillator (200) for providing an LO signal at one of a multiple of predetermined resonant frequencies associated with a number of resonators (210). It includes a number of LO input ports (205) for coupling to the plurality of resonators (210). The local oscillator is controlled to selectively provide at its LO output port (215) an output LO signal at any one of the resonant frequencies.

    Abstract translation: 一种用于以与多个谐振器(210)相关联的多个预定谐振频率中的一个提供LO信号的多频本地振荡器(200)。 它包括用于耦合到多个谐振器(210)的多个LO输入端口(205)。 控制本地振荡器以在其LO输出端口(215)选择性地在任何谐振频率处提供输出LO信号。

    AUTOMATIC TRANSIMPEDANCE CONTROL AMPLIFIER
    2.
    发明申请
    AUTOMATIC TRANSIMPEDANCE CONTROL AMPLIFIER 审中-公开
    自动变速控制放大器

    公开(公告)号:WO1995002278A1

    公开(公告)日:1995-01-19

    申请号:PCT/US1994007221

    申请日:1994-06-27

    CPC classification number: H03G3/3084 H03F3/082

    Abstract: An automatic transimpedance control amplifier (100) is disclosed. The amplifier incorporates an automatic gain circuit (155) which simultaneously and automatically adjusts the value of the transimpedance and the voltage gain at each gain stage of the amplifier (115, 130) according to the input current. The amplifier has wide bandwidth, high sensitivity, and more importantly, wide dynamic range.

    Abstract translation: 公开了一种自动跨阻控制放大器(100)。 放大器包括自动增益电路(155),其根据输入电流同时且自动地调整放大器(115,130)的每个增益级的跨阻抗值和电压增益的值。 放大器具有宽带宽,灵敏度高,更重要的是动态范围广。

    BOOTSTRAPPED-GATE FIELD EFFECT TRANSISTORS AND CIRCUITS THEREOF
    3.
    发明申请
    BOOTSTRAPPED-GATE FIELD EFFECT TRANSISTORS AND CIRCUITS THEREOF 审中-公开
    BOOTSTRAPPED-GATE场效应晶体管及其电路

    公开(公告)号:WO1995034913A1

    公开(公告)日:1995-12-21

    申请号:PCT/US1995007452

    申请日:1995-06-12

    Abstract: A new type of field effect transistors, bootstrapped gate field effect transistors ("BGFETs") for providing variable resistance is disclosed. A BGFET includes source (420), drain (425), gate (430), and channel regions (405). The gate region consists of resistive material and it provides with respect to the channel region distributed resistance and capacitance which imposes distributed feedback to the gate region of AC signal applied to the source or drain regions. BGFETs can be further externally bootstrapped to reduce the lower frequency limit at which it can properly operate.

    Abstract translation: 公开了一种用于提供可变电阻的新型场效应晶体管,自举栅场效应晶体管(“BGFET”)。 BGFET包括源(420),漏极(425),栅极(430)和沟道区(405)。 栅极区域由电阻材料组成,并且其相对于沟道区域提供分布的电阻和电容,其将分布式反馈施加到施加到源极或漏极区域的AC信号的栅极区域。 BGFET可以进一步从外部引导,以减少其正常工作的频率下限。

    AMPLIFIER USING A SINGLE POLARITY POWER SUPPLY
    4.
    发明申请
    AMPLIFIER USING A SINGLE POLARITY POWER SUPPLY 审中-公开
    使用单极化电源的放大器

    公开(公告)号:WO1997023037A1

    公开(公告)日:1997-06-26

    申请号:PCT/US1996019674

    申请日:1996-12-13

    CPC classification number: H03F3/2171 G05F3/242 H03F1/301 H03F1/305 H03K3/354

    Abstract: The present invention provides a power amplifier operating with a signal power supply. The amplifier includes at least one depletion-mode FET (110) for amplifying an ac signal and a negative voltage generator (107) for providing a bias to the FET (110). The generator (107) includes a multivibrator (115) for producing two clock signals and a charge pump (120) which receives the clock signals and produces a negative voltage. Advantageously the negative voltage is provided as a low reference potential to the multivibrator (115) so that the clock signals it produced include a negative voltage period, which enables the charge pump (120) to operate in a power efficient manner.

    Abstract translation: 本发明提供一种利用信号电源工作的功率放大器。 放大器包括用于放大ac信号的至少一个耗尽型FET(110)和用于向FET(110)提供偏置的负电压发生器(107)。 发生器(107)包括用于产生两个时钟信号的多谐振荡器(115)和接收时钟信号并产生负电压的电荷泵(120)。 有利地,将负电压作为低参考电位提供给多谐振荡器(115),使得其产生的时钟信号包括负电压周期,其使得电荷泵(120)能够以功率有效的方式工作。

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