Front-end sampling technique for analog-to-digital converters
    1.
    发明授权
    Front-end sampling technique for analog-to-digital converters 有权
    模数转换器的前端采样技术

    公开(公告)号:US07652611B2

    公开(公告)日:2010-01-26

    申请号:US12123908

    申请日:2008-05-20

    IPC分类号: H03M1/38

    CPC分类号: H03M1/1245 H03M1/168

    摘要: Embodiments of the present invention provide a pipeline ADC front-end sampling structure that provides a continuous time input signal to a flash comparator for sampling. By providing a continuous time input signal to the flash comparator, no delay is introduced from the need to transfer a DC charge representing the sampled input to the flash comparator. Matching sampling networks in the residual generator and the flash comparator are avoided due to the high bandwidth response requirements of the residual generator and the flash comparator when operating on high frequency input signals.

    摘要翻译: 本发明的实施例提供了一种流水线ADC前端采样结构,其向闪速比较器提供连续时间输入信号以进行采样。 通过向闪存比较器提供连续的时间输入信号,从将需要将表示采样输入的DC电荷传送到闪存比较器的需要不会引入延迟。 由于冗余发生器和闪存比较器在高频输入信号上工作时的高带宽响应要求,因此避免了残留发生器和闪存比较器中的匹配采样网络。

    Digitally-controlled, variable-gain mixer and amplifier structures
    2.
    发明授权
    Digitally-controlled, variable-gain mixer and amplifier structures 有权
    数字控制,可变增益混频器和放大器结构

    公开(公告)号:US06812771B1

    公开(公告)日:2004-11-02

    申请号:US10664717

    申请日:2003-09-16

    IPC分类号: G06G716

    CPC分类号: H03F1/22 H03F3/68 H03F3/72

    摘要: Digitally-controlled, variable-gain mixers and amplifiers are provided which couple transconductance cells to receive respective tap signals from a fixed attenuator that receives a first input signal. A gain interpolator provides first and second control currents with amplitudes that correspond to a segment of a control word and a multiplexer responds to another control-word segment by routing the control currents to a selected pair of adjacent transconductance cells. In response, the transconductance cells provide amplifier current signals which can also be routed to a transistor switch that mixes them with a second input signal to generate a mixer output signal whose amplitude corresponds to the control word.

    摘要翻译: 提供数字控制的可变增益混频器和放大器,其耦合跨导单元以从接收第一输入信号的固定衰减器接收各自的抽头信号。 增益内插器提供具有对应于控制字段的幅度的第一和第二控制电流,并且多路器通过将控制电流路由到所选择的一对相邻跨导单元来响应于另一个控制字段。 作为响应,跨导单元提供放大器电流信号,其也可以被路由到晶体管开关,其将它们与第二输入信号混合以产生其幅度对应于控制字的混频器输出信号。

    Hematological reference control composition containing leukocyte analogs, methods of making, and uses thereof
    4.
    发明授权
    Hematological reference control composition containing leukocyte analogs, methods of making, and uses thereof 失效
    含有白细胞类似物的血液学参考对照组合物,制备方法及其应用

    公开(公告)号:US06362003B1

    公开(公告)日:2002-03-26

    申请号:US09152262

    申请日:1998-09-14

    IPC分类号: G01N3100

    摘要: A method of quality control to diagnose the cause of a malfunction of an instrument. The method uses measurements of the physical property of a sample to diagnose the cause of a malfunction of an instrument. The spatial position of a control product sample is analyzed. Alternatively, the spatial position of a statistically significant number of patient blood samples can be used. The method enables the monitoring of an instrument for problems associated with debris and noise caused by red cell lysis inefficiency; instrument reagents pump volume settings; instrument laser alignments; instrument gain settings; and flow noise caused by partial plugs, residual plugs or other flow problems. The method provides a more specific indication of the type and cause of an instrument malfunctioning than non specific flagging provided by prior art methods.

    摘要翻译: 一种用于诊断仪器故障原因的质量控制方法。 该方法使用样品的物理性质的测量来诊断仪器故障的原因。 分析对照产品样品的空间位置。 或者,可以使用统计学上显着数量的患者血液样本的空间位置。 该方法能够监测仪器与由红细胞裂解无效率引起的碎片和噪声相关的问题; 仪器试剂泵体积设置; 仪器激光对准 仪器增益设置; 和由部分插头,残留插头或其他流量问题引起的流动噪声。 该方法提供了与现有技术方法提供的非特定标记相比,仪器故障的类型和原因的更具体的指示。

    Molded antenna
    5.
    发明授权
    Molded antenna 失效
    模制天线

    公开(公告)号:US6147660A

    公开(公告)日:2000-11-14

    申请号:US8473

    申请日:1998-01-16

    申请人: Michael Elliott

    发明人: Michael Elliott

    摘要: A method for producing an antenna, by introducing a moldable material into a mold and molding the material in the mold into an antenna having a desired shape, preferably a helical shape. The method is used to produce an antenna including a generally rigid, conductive coil, which is mechanically self-supporting.

    摘要翻译: 一种制造天线的方法,通过将可模制材料引入模具中并将模具中的材料模制成具有期望形状的天线,优选为螺旋形状。 该方法用于生产包括通常刚性的导电线圈的天线,其是机械自支撑的。

    Retractable antenna
    6.
    发明授权
    Retractable antenna 失效
    伸缩天线

    公开(公告)号:US6046699A

    公开(公告)日:2000-04-04

    申请号:US87567

    申请日:1998-05-29

    摘要: A retractable antenna module including a first, generally stationary plate and a second plate, movable relative to the first plate. The second plate moves between a retracted configuration of the module, in which the plates together function substantially as a feedthrough-fed antenna, and an extended configuration of the module, in which the second plate functions substantially as a monopole antenna.

    摘要翻译: 一种可伸缩天线模块,包括可相对于第一板移动的第一大体上固定的板和第二板。 第二板在模块的缩回配置之间移动,其中板一起基本上作为馈通馈送天线起作用,并且模块的扩展配置,其中第二板基本上起单极天线的作用。

    Pesticides
    10.
    发明授权
    Pesticides 失效
    农药

    公开(公告)号:US4464391A

    公开(公告)日:1984-08-07

    申请号:US172943

    申请日:1980-07-28

    摘要: New insecticides are of formula: ##STR1## wherein R.sup.1 represents hydrogen or a methyl group; R.sup.2 represents hydrogen or a halogeno or lower alkyl group; R.sup.3 represents hydrogen or a halogeno or carbo(lower alkoxy) group which contains at least 2 carbon atoms in the lower alkoxy residue when R.sup.2 represents methyl; with the proviso that (a) R.sup.2 and R.sup.3 each represent hydrogen only when R.sup.1 represents methyl, (b) when R.sup.1 and R.sup.3 each represent hydrogen and R.sup.2 represents alkyl, that alkyl group contains at least 2 carbon atoms and (c) when R.sup.3 represents halogeno, R.sup.2 represents hydrogen or halogeno; and R represents a group which forms insecticidal esters with chrysanthemic acid e.g. 5-benzyl-3-furylmethyl, 3-phenoxybenzyl, .alpha.-cyano-3-phenoxybenzyl. The esters are prepared by forming the ester linkage conventionally or by a Wittig reaction using a 3-formyl- or 3-acetyl-2,2-dimethyl cyclopropane carboxylic acid esterified with the desired residue or by an alkyl group which is subsequently converted to the desired residue.

    摘要翻译: 新的杀虫剂具有下式:其中R 1表示氢或甲基; R2表示氢或卤代或低级烷基; 当R 2表示甲基时,R 3表示氢或低级烷氧基残基中含有至少2个碳原子的卤代或碳(低级烷氧基)基团; 条件是(a)R 2和R 3各自表示氢,当R 1表示甲基时,(b)当R 1和R 3各自表示氢且R 2表示烷基时,该烷基含有至少2个碳原子,和(c)当R 3表示 卤代,R 2表示氢或卤素; R表示与菊酸形成杀虫剂的基团,例如, 5-苄基-3-呋喃基甲基,3-苯氧基苄基,α-氰基-3-苯氧基苄基。 酯通过常规形成酯键或通过Wittig反应制备,使用用所需残基酯化的3-甲酰基或3-乙酰基-2,2-二甲基环丙烷羧酸或通过烷基将其转化为 所需残留物。