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    Gain control amplifier
    23.
    发明公开
    Gain control amplifier 失效
    增益控制放大器

    公开(公告)号：EP0521653A3

    公开(公告)日：1993-06-16

    申请号：EP92305846.5

    申请日：1992-06-25

    Applicant: RAYTHEON COMPANY

    Inventor： Russell, Mark E. ,  Tipton, Michael C. ,  Mara, John F., Jr.

    IPC: H03F1/30 ,  H03G3/20 ,  H03F1/32

    CPC classification number: H03L5/00 ,  H03B19/18

    Abstract: A temperature compensation circuit (26) is used to provide a reference signal in a feed forward gain control loop (28). With such an arrangement, gain control is provided wherein variations of an output signal of the amplifier circuit (10) due to changing characteristics of amplifier elements (12,18) of the amplifier circuit (10) caused by ambient temperature variation or a varying input signal level are minimized. Part of the amplified (12) input signal is supplied by a coupler (14) to a detector (20) followed by a low pass filter (22) that supplies one input of a differential amplifier (24) that receives the reference signal and supplies a control signal to a controllable attenuator (16).

    Phase locked oscillator
    24.
    发明公开
    Phase locked oscillator 失效
    Phasengeregerter Oszillator。

    公开(公告)号：EP0522879A2

    公开(公告)日：1993-01-13

    申请号：EP92306377.0

    申请日：1992-07-10

    Applicant: RAYTHEON COMPANY

    Inventor： Montress, Gary K. ,  Russell, Mark E.

    IPC: H03L7/085 ,  H03L7/20 ,  H03B5/32 ,  H03L7/099

    CPC classification number: H03L7/20

    Abstract: A SAW stabilized oscillator (10) includes a phase locking circuit (38,16,20,22,36) which is phase locked to a lower frequency reference signal having an odd order difference with respect to the fundamental frequency of the SAW oscillator (14). A mixer (54) is disposed in the phase locking circuitry and is used as a sub-harmonic phase detector by mixing the fundamental (54a) with an odd harmonic (54b) of the reference signal (10a). The mixer output (54c) is filtered (70) and amplified (72,74) before being supplied to the control voltage input terminal (36′) of a voltage controlled variable phase shifter (36) in the SAW oscillator (14) loop (13).

    Abstract translation: SAW稳压振荡器（10）包括相位锁定电路（38,16,20,22,36），锁相电路相对于SAW振荡器（14）的基频具有奇数阶差的较低频率参考信号 ）。 混频器（54）设置在锁相电路中，并通过将基波（54a）与参考信号（10a）的奇次谐波（54b）混合而用作次谐波相位检测器。 混频器输出（54c）在被提供给SAW振荡器（14）回路中的电压控制可变移相器（36）的控制电压输入端（36分钟）之前被滤波（70）并放大（72,74） 13）。

    Automotive forward looking sensor
    29.
    发明公开
    Automotive forward looking sensor 有权
    Vorwärtsgerichteter传感器fürKraftfahrzeuge

    公开(公告)号：EP1434061A1

    公开(公告)日：2004-06-30

    申请号：EP04075548.0

    申请日：1998-11-18

    Applicant: Raytheon Company

    Inventor： Russell, Mark E. ,  Miccioli, William F. ,  Drubin, Clifford A.

    IPC: G01S13/93 ,  G01S7/40

    CPC classification number: G01S7/4026 ,  G01S7/35 ,  G01S7/4008 ,  G01S7/4056 ,  G01S13/003 ,  G01S13/345 ,  G01S13/931 ,  G01S2007/403 ,  G01S2007/4039 ,  G01S2007/4091 ,  G01S2013/9321 ,  G01S2013/9353 ,  G01S2013/9375 ,  H01Q1/3233 ,  H01Q25/008

    Abstract: A forward looking sensor (FLS) has a transmit antenna (52) and a receive antenna (56). The receive antenna (56) is coupled through a low noise amplifier (122) and a single sideband generator (126) to a down-converting mixer (146) which supplies an intermediate frequency signal to a further down-converting mixer (158). The further down-converted signal is supplied to an analog-to-digital converter stage (166) of a digital signal processor (60). The transmit antenna (52) receives a signal for transmission from a voltage controlled oscillator (VCO) (70) in a transmitter circuit (50). The single sideband generator (126) comprises a power divider having an input port coupled to the output port of the low noise amplifier (122), and first and second output ports supplying respectively the input ports of first and second amplifiers (132, 134). The amplifiers (132, 134) have respective control ports to which a synthesized fixed frequency is supplied in quadrature to modulate the received signal. The outputs of the amplifiers (132, 134) are coupled to respective input ports of a quadrature coupler (142) having a first output port at which a filtered, single-sideband signal is provided, and a second, terminated output port.

    Abstract translation: 前视传感器（FLS）具有发射天线（52）和接收天线（56）。 接收天线（56）通过低噪声放大器（122）和单个边带发生器（126）耦合到下变频混频器（146），其将中频信号提供给另一下变频混频器（158）。 进一步的下变频信号被提供给数字信号处理器（60）的模数转换器级（166）。 发射天线（52）从发射机电路（50）中的压控振荡器（VCO）（70）接收用于传输的信号。 单边带发生器（126）包括具有耦合到低噪声放大器（122）的输出端口的输入端口的功率分配器，以及分别提供第一和第二放大器（132,134）的输入端口的第一和第二输出端口， 。 放大器（132,134）具有相应的控制端口，合成的固定频率被正交提供到该控制端口以调制接收的信号。 放大器（132,134）的输出耦合到具有第一输出端口的正交耦合器（142）的相应输入端口，在该第一输出端口处提供滤波的单边带信号，以及第二端接输出端口。

    Automotive forward looking sensor alignment method
    30.
    发明公开
    Automotive forward looking sensor alignment method 有权
    汽车前视传感器对准方法

    公开(公告)号：EP1298452A1

    公开(公告)日：2003-04-02

    申请号：EP02078809.7

    申请日：1998-11-18

    Applicant: Raytheon Company

    Inventor： Russell, Mark E. ,  Drubin, Clifford A. ,  Miccioli, William F.

    IPC: G01S13/93 ,  G01S7/40

    CPC classification number: G01S7/4026 ,  G01S7/35 ,  G01S7/4008 ,  G01S7/4056 ,  G01S13/003 ,  G01S13/345 ,  G01S13/931 ,  G01S2007/403 ,  G01S2007/4039 ,  G01S2007/4091 ,  G01S2013/9321 ,  G01S2013/9353 ,  G01S2013/9375 ,  H01Q1/3233 ,  H01Q25/008

    Abstract: An automotive forward looking sensor has a transmit antenna (52) that generates a multiple beam pattern (68a - 68m), and a receive antenna (56) that receives in a multiple beam pattern (66a - 66m). The outermost beams (66a,66m; 68a,68m) of the patterns are used as alignment beams and are aimed at approximately 20° in opposite directions from the nominal centre line of the forward looking direction, and are angled down at approximately 45° towards a road surface. With the beams properly aligned, substantially identical Doppler returns are detected. Difference between Doppler returns indicates misalignment.

    Abstract translation: 汽车前视传感器具有产生多光束图案（68a-68m）的发射天线（52）和以多光束图案（66a-66m）接收的接收天线（56）。 图案的最外侧光束（66a，66m; 68a，68m）被用作对准光束并且沿着从向前看的方向的标称中心线的相反方向瞄准大约20°，并且朝向大约45°向下 路面。 在光束正确对准的情况下，检测到基本相同的多普勒返回。 多普勒返回值之间的差异表示未对准。

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