Process for the preparation of cationic surfactants
    21.
    发明授权
    Process for the preparation of cationic surfactants 有权
    阳离子表面活性剂的制备方法

    公开(公告)号:US07087769B1

    公开(公告)日:2006-08-08

    申请号:US10467780

    申请日:2000-06-03

    CPC classification number: C07C231/02 C07C277/08 C07C279/14

    Abstract: The invention concerns the preparation of cationic surfactants derived from the condensation of an acid, preferably a fatty acid or a hydroxy acid with a number of carbon atoms of 8–14 with esterified amino acids, preferably basic-type amino acids, more preferably (L)-arginine. The method comprises a first step in which the esterifiction of the amino acid with an alcohol is performed and a second step for the condensation with a chloride of an acid, preferably an acyl chloride of a fatty acid or a hydroxy acid, whereby the second step is performed in an aqueous environment with a pH value between (6 and 7), preferably between (6, 7) and (6, 9).

    Abstract translation: 本发明涉及制备阳离子表面活性剂,其衍生自酸,优选脂肪酸或碳原子数为8-14的羟基酸与酯化氨基酸,优选碱性氨基酸,更优选(L ) - 精氨酸 该方法包括第一步骤,其中氨基酸与醇进行酯化,第二步是与酸,优选脂肪酸或羟基酸的酰氯缩合,由此第二步骤 在pH值介于(6和7之间),优选在(6,7)和(6,9)之间的水性环境中进行。

    DUAL BAND WLAN COUPLED RADIATOR ANTENNA
    27.
    发明申请
    DUAL BAND WLAN COUPLED RADIATOR ANTENNA 有权
    双带无线局域网耦合辐射天线

    公开(公告)号:US20140266917A1

    公开(公告)日:2014-09-18

    申请号:US13801302

    申请日:2013-03-13

    CPC classification number: H01Q19/005 H01Q1/38 H01Q5/385 H01Q9/0407 H01Q9/40

    Abstract: Planar antennas comprise capacitively coupled antenna patches. A first antenna patch configured to radiate in a first frequency band is coupled to a transmitter/receiver. The first antenna patch is situated to capacitively couple radiation in the first frequency band and a second frequency band to second and third antenna patches, respectively. The first and second antenna patches extend antenna bandwidth in the first frequency band, and the third antenna patch is bent so that the antenna patches can be situated in a predetermined substrate area.

    Abstract translation: 平面天线包括电容耦合天线贴片。 经配置以在第一频带中辐射的第一天线补片耦合到发射器/接收器。 第一天线贴片位于将第一频带中的辐射电容耦合,并将第二频带分别耦合到第二和第三天线贴片。 第一和第二天线贴片在第一频带中扩展天线带宽,并且第三天线贴片被弯曲,使得天线贴片可以位于预定的衬底区域中。

    Reconfigurable Multi-band Antenna
    28.
    发明申请
    Reconfigurable Multi-band Antenna 审中-公开
    可重构多频天线

    公开(公告)号:US20130285863A1

    公开(公告)日:2013-10-31

    申请号:US13456931

    申请日:2012-04-26

    CPC classification number: H01Q1/243 H01Q5/321 H01Q9/145 H01Q9/42

    Abstract: Reconfigurable multi-band antenna techniques are described. In one or more implementations, an apparatus includes an antenna that can operate at multiple frequency bands that include first and second frequency bands, respectively. The antenna includes a first radiator structure configured to tune to the first frequency band and comprising a first radiator element. In addition, the antenna includes a second radiator structure configured to tune to the second frequency band and comprising the first radiator element and a second radiator element. The antenna also includes a tunable circuit configured to couple the first radiator element to the second radiator element. Additionally, the apparatus includes a communication module configured to use the tunable circuit to adjust one of said first and second frequency bands independently from, and without causing a change in, the other of said first and second frequency bands.

    Abstract translation: 描述可重新配置的多频带天线技术。 在一个或多个实现中,一种装置包括可以分别在包括第一和第二频带的多个频带上操作的天线。 天线包括配置成调谐到第一频带并包括第一辐射体元件的第一辐射器结构。 另外,天线包括配置成调谐到第二频带并包括第一散热器元件和第二散热器元件的第二辐射体结构。 天线还包括被配置为将第一散热器元件耦合到第二散热器元件的可调谐电路。 另外,该装置包括通信模块,该通信模块被配置为使用可调谐电路来独立地调整所述第一和第二频带中的一个频带,并且不引起所述第一和第二频带中的另一个频带的改变。

    Methods and systems for decentralized managing of neighboring femtocells
    29.
    发明授权
    Methods and systems for decentralized managing of neighboring femtocells 失效
    用于分散管理邻近毫微微蜂窝基站的方法和系统

    公开(公告)号:US08521147B2

    公开(公告)日:2013-08-27

    申请号:US13311904

    申请日:2011-12-06

    Abstract: Methods and systems to decentralize managing of neighboring femtocells. The methods and systems include communication to a first femtocell from a second femtocell of next information that includes communicated information of: i) the interference requirement constraint of an active user of the second femtocell, and ii) one or more parameters characterizing a physical radio channel defined from the first femtocell to the at least one active user of the second femtocell; the self-configuration of the transmission parameters of the first femtocell based upon the communicated information i) and ii). Another method (and system to implement the method) includes the mutual adjustment of the interference requirement constraints between a first and a second femtocell, regarding their active users, in a decentralized manner, on the basis of not affecting the transmission performance of the rest of the plurality of femtocells.

    Abstract translation: 分散相邻毫微微蜂窝基站管理的方法和系统。 所述方法和系统包括从下一个信息的第二毫微微小区到第一毫微微小区的通信,所述第二毫微微小区包括以下通信信息:i)第二毫微微小区的活动用户的干扰要求约束,以及ii)表征物理无线电信道的一个或多个参数 从第一毫微微小区定义为第二毫微微小区的至少一个活动用户; 基于所传送的信息i)和ii),第一毫微微小区的传输参数的自配置。 另一种方法(以及实现该方法的系统)包括:在不影响其余部分的传输性能的基础上,以分散方式相互调节第一和第二毫微微蜂窝之间的干扰要求约束 多个毫微微小区。

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