Receiver of radio frequency signals
    1.
    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
    2.
    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)。

    RECEIVER OF RADIO FREQUENCY SIGNALS
    3.
    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。

    COMPACTED PATCH ANTENNA
    4.
    发明申请
    COMPACTED PATCH ANTENNA 审中-公开
    压缩天线

    公开(公告)号:US20130063316A1

    公开(公告)日:2013-03-14

    申请号:US13699133

    申请日:2011-05-20

    IPC分类号: H01Q1/38 H01Q1/50 H01Q1/32

    摘要: A compacted patch antenna is described, particularly for installation in a vehicle, comprising an electrically supplied strip radiating element and a ground plane. The strip radiating element is connected to the ground plane at a first end by means of a metal link and at a second end, opposite to the first end, by means of a variable capacitor. The compacted patch antenna comprises a printed circuit, the bottom surface of which is integral with the ground plane, a dielectric material layer arranged between the strip radiating element and the printed circuit; the strip radiating element is substantially parallel to the ground mass. The dielectric material layer has a relative dielectric constant ranging between 3 to 6 with a loss factor ranging between 0.03 to 0.1.

    摘要翻译: 描述了一种紧凑的贴片天线,特别是用于安装在车辆中,包括电提供的条形辐射元件和接地平面。 带状辐射元件通过金属连接件在第一端处连接到接地平面,并且通过可变电容器连接到与第一端相对的第二端。 压实的贴片天线包括其底表面与接地平面成一体的印刷电路,布置在条形辐射元件和印刷电路之间的电介质材料层; 带状辐射元件基本上平行于地面质量。 电介质材料层的相对介电常数介于3至6之间,损耗因子介于0.03至0.1之间。

    Surface acoustic wave driving circuit and oscillator therefor
    5.
    发明授权
    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:US08134416B2

    公开(公告)日:2012-03-13

    申请号:US12733048

    申请日:2008-07-18

    IPC分类号: H03B5/12

    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)。