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    • 61. 发明申请
    • Cascade-type variable-order delta-sigma modulator
    • 级联型可变阶Δ-Σ调制器
    • US20060164274A1
    • 2006-07-27
    • US11338651
    • 2006-01-25
    • Masato NakakitaFumihito InukaiHitoshi Kobayashi
    • Masato NakakitaFumihito InukaiHitoshi Kobayashi
    • H03M3/00
    • H03M3/394H03M3/414
    • A cascade-type variable-order delta-sigma modulator with low power consumption that can change the number of stages of the quantization loops, which are connected in a cascade configuration, to an optimum number depending on peripheral circuitries in a configuration as simple as possible. The present invention includes first to nth stages of delta-sigma modulating type quantization loops (n is an integer equal to or more than 2) connected in a cascade configuration, and a noise rejecting circuit. Each quantization loop quantizes an input signal, outputs the quantization result, and feeds back the quantization result to itself. The noise rejecting circuit rejects a quantization noise of the first stage of quantization loop, and comprises (n−1) selectors for activating and de-activating the respective output signals of the second and succeeding stages of the quantization loops in compliance with the control signal.
    • 具有低功耗的级联型可变阶Δ-Σ调制器,其可以将串联配置中连接的量化循环的级数改变为最佳数量,这取决于尽可能简单的配置中的外设电路 。 本发明包括以级联配置连接的Δ-Σ调制型量化环(n为等于或大于2的整数)的第一至第N级,以及噪声抑制电路。 每个量化环对输入信号进行量化,输出量化结果,并将量化结果反馈给自身。 噪声抑制电路拒绝量化环路的第一级的量化噪声,并且包括用于根据控制信号激活和去激活量化环路的第二级和后级的各个输出信号的(n-1)个选择器 。
    • 62. 发明申请
    • Pyrogenically produced silicone dioxide powder
    • 热解产生的二氧化硅粉末
    • US20060153764A1
    • 2006-07-13
    • US11085151
    • 2005-03-22
    • Kai SchumacherNaruyasu IshibashiHitoshi KobayashiPaul Brandl
    • Kai SchumacherNaruyasu IshibashiHitoshi KobayashiPaul Brandl
    • C01B33/12
    • C01B33/183Y10T428/2982
    • Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 300±25 m2/g, wherein the aggregates display an average surface area of 4800 to 6000 nm2, an average equivalent circle diameter (ECD) of 60 to 80 nm and an average circumference of 580 to 750 nm. It is produced by a pyrogenic process in which silicon tetrachloride and a maximum of up to 40 wt. % of a second silicon component comprising H3SiCl, H2SiCl2, HSiCl3, CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and/or (n-C3H7)SiCl3 are mixed with primary air and a combustion gas and burnt into a reaction chamber, secondary air also being introduced into the reaction chamber, and the feed materials being chosen such that an adiabatic flame temperature of 1390 to 1450° C. is obtained. It can be used as a filler.
    • 以BET表面积为300±25m 2 / g的一次粒子的聚集体形式的热解生成的二氧化硅粉末,其中聚集体的平均表面积为4800〜6000nm, 2,平均当量圆直径(ECD)为60〜80nm,平均周长为580〜750nm。 它是通过热解法生产的,其中四氯化硅和最多达40wt。 %的包含H 3 SiCl,H 2 SiCl 2,HSiCl 3,CH,SUB的第二硅组分的% (CH 3)3 SiCl 3,(CH 3 3)2 SiCl 2,(CH 3) 3 N 3 SiCl 3和/或(n C 3 H 7)SiCl 3 3与 初级空气和燃烧气体并燃烧到反应室中,二次空气也被引入反应室,并且进料选择为使得绝热火焰温度为1390至1450℃。 它可以用作填料。
    • 67. 发明授权
    • Filter circuit, front end of communication system including the filter circuit, and communication device including the same
    • 滤波电路,包括滤波电路的通信系统的前端,以及包括该滤波电路的通信装置
    • US06825712B2
    • 2004-11-30
    • US10385427
    • 2003-03-12
    • Shiro DoshoTakashi MorieHitoshi KobayashiNorihide KinugasaMasaomi Toyama
    • Shiro DoshoTakashi MorieHitoshi KobayashiNorihide KinugasaMasaomi Toyama
    • H03K500
    • H03H11/04
    • In a front end that has a filter circuit and is used for a communication system having an asymmetric communication channel in which upstream and downstream data rates are different, a filter circuit for received signals, which is for filtering received signals, and a filter circuit for transmitted signals, which is for filtering transmitted signals, are provided. The filter circuit for received signals has an amplifier block including a plurality of amplifiers, a capacitor block including a plurality of capacitors and being connected to the plurality of amplifiers included in the amplifier block, and a first and a second resistor blocks each including a plurality of resistors. Either one of the first or the second resistor block is selectively switched so as to be connected to the amplifier block by a resistor block-switching circuit. The circuit scale is reduced since only one amplifier block and one capacitor block are commonly used for two kinds of filter circuits.
    • 在具有滤波器电路的前端中,用于具有上行和下行数据速率不同的非对称通信信道的通信系统,用于对接收信号进行滤波的接收信号的滤波电路和用于 提供用于滤波发送信号的发送信号。 用于接收信号的滤波器电路具有包括多个放大器的放大器模块,包括多个电容器并且连接到放大器模块中所包括的多个放大器的电容器模块,以及包括多个放大器的第一和第二电阻块 的电阻。 选择性地切换第一或第二电阻器块中的任何一个,以便通过电阻器块切换电路连接到放大器块。 由于只有一个放大器块和一个电容器块通常用于两种滤波器电路,电路规模减小。