Method of polishing wafers
    6.
    发明授权
    Method of polishing wafers 有权
    抛光晶圆的方法

    公开(公告)号:US06878302B1

    公开(公告)日:2005-04-12

    申请号:US10239669

    申请日:2000-03-30

    摘要: The method comprises the steps of mounting a first wafer (13) on the mounting member (12) and securing the mounting member to the hub (16) by drawing a vacuum at a first vacuum pressure through the hub; rotating the hub about the hub axis (AH), rotating a polishing pad (34) mounted on the turntable (30) about the turntable axis (at), and bringing a surface of the wafer (13) and the polishing pad into contact with each other. The wafer (16) is demounted, and the shape of the polished wafer is determined. A second vacuum pressure is selected using the information obtained. A successive wafer is polished according to the same method as the first wafer except that the second vacuum pressure is substituted for the first vacuum pressure. The second vacuum pressure is sufficient to deform the mounting member (12) thereby deform the wafer to improve the flatness and parallelism of the surfaces of the successive wafer.

    摘要翻译: 该方法包括以下步骤:将第一晶片(13)安装在安装构件(12)上,并通过在第一真空压力下通过轮毂抽真空,将安装构件固定到轮毂(16)上; 围绕所述轮毂轴线(AH)旋转所述轮毂,使安装在所述转盘(30)上的抛光垫(34)围绕所述转盘轴线(at)旋转,并且使所述晶片(13)的表面和所述抛光垫与 彼此。 拆下晶片(16),并确定抛光晶片的形状。 使用获得的信息选择第二真空压力。 除了第二真空压力代替第一真空压力之外,根据与第一晶片相同的方法对连续的晶片进行抛光。 第二真空压力足以使安装构件(12)变形,从而使晶片变形,以改善连续晶片的表面的平坦度和平行度。

    Receiver of radio frequency signals
    7.
    发明授权
    Receiver of radio frequency signals 有权
    射频信号接收机

    公开(公告)号:US09270309B2

    公开(公告)日:2016-02-23

    申请号:US14114922

    申请日:2012-05-03

    摘要: There is described a receiver of at least one radiofrequency modulated signal deriving from an antenna external to the receiver; the receiver comprises a first stage for the low noise amplification of the radiofrequency modulated signal and a demodulation stage of the above-mentioned signal. The receiver comprises a SAW filter adapted to act as a pass band filter about a predetermined frequency for the signal deriving from the first stage, a logarithmic amplifier adapted to amplify the signal deriving from the SAW filter, a peak detector of the output signal of the logarithmic amplifier, means adapted to control the gain of the first stage for the amplification of the radiofrequency modulated signal as a function of the output signal (Vopeak) of the peak detector.

    摘要翻译: 描述了从接收机外部的天线导出的至少一个射频调制信号的接收机; 接收机包括用于对射频调制信号进行低噪声放大的第一级和上述信号的解调级。 接收机包括适于作为用于从第一级导出的信号的预定频率的通带滤波器的SAW滤波器,适用于放大从SAW滤波器导出的信号的对数放大器, 对数放大器,适于根据峰值检测器的输出信号(Vopeak)来控制用于放大射频调制信号的第一级的增益的装置。

    SURFACE ACOUSTIC WAVE DRIVING CIRCUIT AND OSCILLATOR THEREFOR
    8.
    发明申请
    SURFACE ACOUSTIC WAVE DRIVING CIRCUIT AND OSCILLATOR THEREFOR 有权
    表面声波驱动电路及其振荡器

    公开(公告)号:US20100134194A1

    公开(公告)日:2010-06-03

    申请号:US12733048

    申请日:2008-07-18

    IPC分类号: H03B5/12 H03H9/00

    CPC分类号: H03B5/326 H03B5/06

    摘要: A driving circuit of a surface wave resonator (X1) is described; the resonator comprises a static capacitor (Co) and the driving circuit is adapted to supply a voltage (Vx) to the resonator. The driving circuit comprises reactive means (L3) adapted to resonate in combination with said static capacitor (Co) of the resonator at a predetermined frequency (Fo) in the initial driving period of the resonator at said voltage; the driving circuit comprises passive means (R3) adapted to determine oscillations at said predetermined frequency (Fo).

    摘要翻译: 描述表面波谐振器(X1)的驱动电路; 谐振器包括静电电容器(Co),并且驱动电路适于向谐振器提供电压(Vx)。 驱动电路包括适于在谐振器的所述电压的初始驱动周期期间以预定频率(Fo)与谐振器的所述静态电容器(Co)谐振的无功装置(L3) 驱动电路包括适于以所述预定频率(Fo)确定振荡的无源装置(R3)。

    Electronic System for Defence Against Fires in Forest Areas and More Generally for Monitoring the Territory
    9.
    发明申请
    Electronic System for Defence Against Fires in Forest Areas and More Generally for Monitoring the Territory 审中-公开
    防治森林地区火灾的电子系统和一般监测领土的电子系统

    公开(公告)号:US20080309501A1

    公开(公告)日:2008-12-18

    申请号:US11659233

    申请日:2005-07-29

    IPC分类号: G08B17/12

    CPC分类号: G08B17/005 G08B17/12

    摘要: The invention refers to an electronic system for defence against fires in forest areas and more generally for monitoring the territory. The system comprises a network of alarm stations (SA) distributed over the territory being controlled, where each alarm station (SA) is enclosed in an air-scaled mechanically-sealed protective casing and comprises at least one sensor (S1-S3), a microcontroller (MC), a transceiver (RTX) at low power radiofrequency fitted with antenna (A) and a battery (B) for the electric powering of said sensor (S1-S3), said microcontroller (MC) and said transceiver (RTX). The alarm station network (SA) is in wireless communication with at least one intermediate detection unit (CIR) in turn in communication with at least one central control station (SC) controlled by bodies authorised to control and defend the territory.

    摘要翻译: 本发明涉及一种用于防御森林地区火灾的电子系统,更一般地,用于监测该领土。 该系统包括分布在被控制区域上的报警站(SA)网络,其中每个报警站(SA)封闭在空气规模的机械密封保护壳体中,并且包括至少一个传感器(S1-S3), 微控制器(MC),配备有天线(A)的低功率射频收发器(RTX)和用于所述传感器(S1-S3)的电力供应的电池(B),所述微控制器(MC)和所述收发器(RTX) 。 报警站网络(SA)与至少一个中间检测单元(CIR)进行无线通信,所述至少一个中间检测单元(CIR)与由被授权控制和保卫领土的机构控制的至少一个中央控制站(SC)通信。

    RECEIVER OF RADIO FREQUENCY SIGNALS
    10.
    发明申请
    RECEIVER OF RADIO FREQUENCY SIGNALS 有权
    无线电频率信号接收机

    公开(公告)号:US20140065995A1

    公开(公告)日:2014-03-06

    申请号:US14114922

    申请日:2012-05-03

    IPC分类号: H04B1/10 H04B1/18

    摘要: There is described a receiver of at least one radiofrequency modulated signal deriving from an antenna external to the receiver; the receiver comprises a first stage for the low noise amplification of the radiofrequency modulated signal and a demodulation stage of the above-mentioned signal. The receiver comprises a SAW filter adapted to act as a pass band filter about a predetermined frequency for the signal deriving from the first stage, a logarithmic amplifier adapted to amplify the signal deriving from the SAW filter, a peak detector of the output signal of the logarithmic amplifier, means adapted to control the gain of the first stage for the amplification of the radiofrequency modulated signal as a function of the output signal (Vopeak) of the peak detector.

    摘要翻译: 描述了从接收机外部的天线导出的至少一个射频调制信号的接收机; 接收机包括用于对射频调制信号进行低噪声放大的第一级和上述信号的解调级。 接收机包括适于作为用于从第一级导出的信号的预定频率的通带滤波器的SAW滤波器,适用于放大从SAW滤波器导出的信号的对数放大器, 对数放大器,适于根据峰值检测器的输出信号(Vopeak)来控制用于放大射频调制信号的第一级的增益的装置。