Method of frequency tuning a piezoelectric device and apparatus for the
implementation of the method
    2.
    发明授权
    Method of frequency tuning a piezoelectric device and apparatus for the implementation of the method 失效
    压电装置的频率调谐方法及其实施方法

    公开(公告)号:US5407525A

    公开(公告)日:1995-04-18

    申请号:US170767

    申请日:1993-12-21

    IPC分类号: H03H3/04 B44C1/22 C23F1/00

    CPC分类号: H03H3/04

    摘要: A method of frequency tuning a piezoelectric device and apparatus for the implementation thereof. A piezoelectric device having at least one resonating function is formed by two metallized electrodes facing each other, on a face of a plate made of a piezoelectric material. An arranging step arranges the plate, fitted with the electrodes, in a tuning position in proximity to an ion source. Then, an exposing step exposes the plate to an ion flux produced by the source and the ions etch the metal. A measuring step measures the resonant frequency of the resonating function while the plate is in a tuning position. Finally, a raising step raises at least one electrode exposed to the ions to an adjustable bias voltage to control the rate at which the metal on the electrode is etched.

    摘要翻译: 一种压电装置的频率调谐方法及其实现方法。 具有至少一个谐振功能的压电器件由彼此面对的两个金属化电极在由压电材料制成的板的表面上形成。 布置步骤将装配有电极的板布置在靠近离子源的调谐位置。 然后,暴露步骤将板暴露于由源产生的离子通量,并且离子蚀刻金属。 当板处于调谐位置时,测量步骤测量谐振功能的谐振频率。 最后,升高步骤将暴露于离子的至少一个电极升高到可调偏置电压,以控制蚀刻电极上的金属的速率。

    Contactless integrated-circuit card comprising inhibiting means
    4.
    发明授权
    Contactless integrated-circuit card comprising inhibiting means 失效
    非接触式集成电路卡包括抑制装置

    公开(公告)号:US06386459B1

    公开(公告)日:2002-05-14

    申请号:US09647488

    申请日:2001-01-04

    IPC分类号: G06K1906

    摘要: A contactless smart card has a sheet-like body containing an integrated circuit and an antenna via which the integrated circuit communicates with a terminal. The antenna lies in the plane of the card body and is constituted by several turns of a conductor that form a winding. A conductive bridge connects at least two turns of the winding to reduce its inductance. The card body includes a rupture zone that is designed to be broken when the card is first used. A portion of the connecting bridge lies within the rupture zone, so that it is broken when the rupture zone is broken during use.

    摘要翻译: 非接触式智能卡具有包含集成电路和集成电路与终端通信的天线的片状体。 天线位于卡体的平面内,由几圈形成绕组的导体构成。 导电桥连接至少两圈的绕组以减小其电感。 卡体包括破裂区,该断裂带被设计成当卡首次使用时被破坏。 连接桥的一部分位于破裂区内,因此在使用时破裂区破裂时破裂。

    RADIOFREQUENCY COMMUNICATION DEVICE INCLUDING A TIMER
    5.
    发明申请
    RADIOFREQUENCY COMMUNICATION DEVICE INCLUDING A TIMER 审中-公开
    包含定时器的无线通信设备

    公开(公告)号:US20100308976A1

    公开(公告)日:2010-12-09

    申请号:US12739562

    申请日:2008-09-30

    IPC分类号: H04Q5/22

    摘要: The invention relates to an electronic radiofrequency-transaction device that comprises a first switch capable of providing a radiofrequency operation of the device upon actuation of the switch and an operation stop when the actuation is released. The device is characterised in that it comprises a timer circuit capable of maintaining, after the actuation of the first switch, a continuous radiofrequency operation for a duration at least equal to the duration of a transaction to be carried out. The invention also relates to a smart card containing the device and to a module for an electronic radiofrequency-transaction device.

    摘要翻译: 电子射频交易装置技术领域本发明涉及一种电子射频交易装置,其包括第一开关,该第一开关能够在开关动作时提供装置的射频操作,以及当致动被释放时的操作停止。 该装置的特征在于,其包括定时器电路,其能够在第一开关的致动之后维持持续的射频操作持续至少等于要执行的交易的持续时间的持续时间。 本发明还涉及一种包含该设备的智能卡和一种用于电子射频交易设备的模块。

    Method for making an electronic device such as a contactless card
    10.
    发明授权
    Method for making an electronic device such as a contactless card 失效
    制造诸如非接触式卡的电子设备的方法

    公开(公告)号:US06677186B1

    公开(公告)日:2004-01-13

    申请号:US09936302

    申请日:2001-12-26

    IPC分类号: H01L2144

    摘要: A method for making an electronic device having an integrated circuit chip connected to an antenna. A chip is transferred into an impression provided in a substrate made of insulating material. The chip is connected to an antenna by hot lamination of an insulating support-sheet bearing the antenna. The method ensures a high quality electrical connection between the chip and the antenna, and enables the connection of a chip matrix with a plurality of antennae in a large-size circuit to be produced in one single step.

    摘要翻译: 一种用于制造具有连接到天线的集成电路芯片的电子设备的方法。 将芯片转移到由绝缘材料制成的衬底中提供的印模中。 芯片通过承载天线的绝缘支撑板的热层压连接到天线。 该方法确保芯片和天线之间的高质量电连接,并且能够在一个单一步骤中使芯片矩阵与大尺寸电路中的多个天线的连接。