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    • 2. 发明授权
    • Correlation circuit for spread spectrum communication
    • 扩频通信的相关电路
    • US06678313B1
    • 2004-01-13
    • US09472003
    • 1999-12-27
    • Ichiro ImaizumiKouya HoshinaKenjiro Yasunari
    • Ichiro ImaizumiKouya HoshinaKenjiro Yasunari
    • H04B169
    • H04B1/709
    • There is disclosed a correlation circuit for spread spectrum communication which reduces the number of constituting elements to attain low power consumption and which can obtain correlation in a short time, to solve a problem that a conventional sliding correlator requires much time to obtain the correlation and that a matched filter increases the power consumption. In the spread spectrum communication correlation circuit, an A/D converter converts a received spread spectrum signal to a digital signal. Under control of a controller, one symbol of signals are written to an S/H circuit with a 16 MHz. clock, shifted for each sample and read to a high-speed correlator from the S/H circuit with a high-speed clock of 1.6 GHz a plurality of times, and the high-speed correlator performs a product sum operation with a spread code with the 1.6 GHz clock. At the same time the reading is performed, the next symbol of signals are written to the S/H circuit.
    • 公开了一种用于扩频通信的相关电路,其减少了达到低功耗的组成元件的数量,并且可以在短时间内获得相关性,以解决常规滑动相关器需要大量时间来获得相关性的问题, 匹配的滤波器增加功耗。 在扩频通信相关电路中,A / D转换器将接收的扩频信号转换为数字信号。 在控制器的控制下,信号的一个符号被写入到具有16MHz的S / H电路。 时钟,对于每个采样移位,并从具有1.6GHz的高速时钟的S / H电路读取高速相关器多次,并且高速相关器用扩展码执行乘积和运算, 1.6 GHz时钟。 同时执行读取,信号的下一个符号被写入S / H电路。
    • 3. 发明授权
    • Multi-emitter transistor having heavily doped N+ regions surrounding
base region of transistors
    • 多发射极晶体管具有重掺杂的N {30(0)区域围绕晶体管的基极区域
    • US3946425A
    • 1976-03-23
    • US469745
    • 1974-05-14
    • Senji ShojiKenjiro YasunariYasunobu Kosa
    • Senji ShojiKenjiro YasunariYasunobu Kosa
    • H01L21/00H01L21/74H01L21/761H01L27/06H01L27/04H01L29/167
    • H01L27/0664H01L21/00H01L21/74H01L21/761H01L27/0652
    • In a semiconductor integrated circuit device in which a plurality of regions each having a semiconductor element such as a PN junction diode and a transistor are isolated electrically from one another by PN junctions formed between the respective regions and a semiconductor isolation region, gold is introduced into the regions having the semiconductor elements and the isolation region while at least one diffused region heavily doped, for example, with phosphorus is formed in the isolation region adjacent to the region having the PN junction diode or the transistor thereby to prevent the breakdown voltage of the backwardly biased PN junction in the diode or the transistor from decreasing. Further by surrounding all the transistors, at least in one of which gold is diffused, formed in one integrated circuit with heavily doped N.sup.+-type regions an integrated circuit with transistors having a small variation in current amplification factor is obtained.
    • 在半导体集成电路器件中,其中每个具有诸如PN结二极管和晶体管的半导体元件的多个区域通过在各个区域和半导体隔离区域之间形成的PN结彼此电隔离,将金引入 在与具有PN结二极管或晶体管的区域相邻的隔离区域中形成具有半导体元件和隔离区域的区域,而在具有例如磷的重掺杂的至少一个扩散区域上形成具有半导体元件和隔离区域的区域,从而防止了 二极管或晶体管中向后偏置的PN结减小。 此外,通过围绕所有晶体管,至少其中一个金扩散,形成在具有重掺杂N +型区域的一个集成电路中,获得具有电流放大因子变化小的晶体管的集成电路。