公开(公告)号：EP1281984A1

公开(公告)日：2003-02-05

申请号：EP02078808.9

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: 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 downconverted 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). A control signal (72) for the VCO (70) is generated in response to the output of a mixer (84), which is supplied with a portion of the transmitted signal from a coupler (82), and a local oscillator signal from a dielectric resonator oscillator (86). The mixer output (92) is linearized by a linearization circuit (80). The linearization circuit (80) has a phase or frequency detector (96) which produces the control signal by comparing a fixed reference frequency signal (98) with a frequency divided signal (106) derived from the mixer output (92). The frequency division is controlled by a counter (100).

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。 响应于混频器（84）的输出产生用于VCO（70）的控制信号（72），混频器（84）被提供有来自耦合器（82）的发射信号的一部分，以及来自 介质谐振器振荡器（86）。 混频器输出（92）由线性化电路（80）线性化。 线性化电路（80）具有通过将固定参考频率信号（98）与从混频器输出（92）导出的分频信号（106）进行比较来产生控制信号的相位或频率检测器（96）。 分频由计数器（100）控制。

公开(公告)号：EP0521652A3

公开(公告)日：1993-06-16

申请号：EP92305845.7

申请日：1992-06-25

Applicant: RAYTHEON COMPANY

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

IPC: H03B19/16

CPC classification number: H03B19/18 ,  H03B19/00 ,  H03B19/16 ,  H03B2200/0028 ,  H03B2200/0088 ,  H03L5/00

Abstract: A frequency doubler (Fig. 7) or a frequency tripler (Fig. 4) is coupled to an amplifier (110) with a temperature compensation circuit (126) and a feed forward gain control loop (114,120,122,124,116). With such an arrangement, a frequency multiplier is provided wherein variations of an output signal of the frequency multiplier due to changing characteristics of the frequency multiplier caused by ambient temperature variation or from a varying input signal level are minimized. An anti-parallel pair of diodes (136a,136b) provides odd harmonics from an amplified (132) input RF signal. A high pass filter (138) selects the third harmonic and supplies it through an amplifier (112) and a coupler (114) to a variable attenuator (116). The coupler (114) supplies a signal to a detector (120) that drives one input of a differential amplifier (124). The temperature compensation circuit (126) supplies a reference signal to the other input of the differential amplifier (124). The output from the differential amplifier (124) is a control signal that controls the attenuator (116) to compensate for variations in the amplitude of the output from the high pass filter (138) and variation in the characteristics of the amplifiers (112,118) due to temperature change.

公开(公告)号：EP0521653A2

公开(公告)日：1993-01-07

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).

Abstract translation: 温度补偿电路（26）用于在前馈增益控制回路（28）中提供参考信号。 通过这样的布置，提供了增益控制，其中由于环境温度变化引起的放大器电路（10）的放大器元件（12,18）的特性的变化或者变化的输入引起放大器电路（10）的输出信号的变化 信号电平最小化。 放大的（12）输入信号的一部分由耦合器（14）提供给检测器（20），随后是低通滤波器（22），其提供接收参考信号的差分放大器（24）的一个输入，并提供 到可控衰减器（16）的控制信号。

公开(公告)号：EP0495598A1

公开(公告)日：1992-07-22

申请号：EP92300251.3

申请日：1992-01-10

Applicant: RAYTHEON COMPANY

Inventor： Russell, Mark E.

IPC: H03D9/06

CPC classification number: H03D9/0633 ,  H03D2200/0037 ,  H03D2200/009

Abstract: A mixer (20) has a diode pair (24), a first RF propagation network (22a) having a first end coupled to a first terminal (20a) of the mixer (20) and a second end coupled to a first electrode (24a) of the diode pair (24). A network (28) is coupled to the first RF propagation network (22a) for providing a low impedance DC signal path to ground and for providing a high impedance signal path to signals propagating at a first radio frequency (RF) frequency received at the first terminal (20a). A first transmission line resonator (30) is coupled to the first RF propagation network (22a) and has an electrical pathlength which is one quarter of a wavelength at a second RF frequency (local oscillator frequency LO). A second RF propagation network (22b) has a first end coupled to a second terminal (20b) of the mixer (20) and a second end coupled to a second electrode (24b) of the diode pair (24). A second transmission line resonator (32) is coupled to the second RF propagation network (22b) and has an electrical pathlength which is one quarter of a wavelength at the first RF frequency. A further network (34) has a first end coupled to the second RF propagation network (22b) and a second end coupled to a third terminal (20c) of the mixer (20) to signals propagating at a third RF frequency (the intermediate frequency IF) and for providing a high impedance at its first end to signals propagating along the second RF propagation network (22b) at the second RF frequency (local oscillartor frequency LO). The use of resonators (30,32) instead of filters enables the mixer to be made in the form of a hybrid monolithic microwave/millimetre wave integrated circuit (HMIMIC).

Abstract translation: 混合器（20）具有二极管对（24），第一RF传播网络（22a），其具有耦合到混合器（20）的第一端子（20a）的第一端和耦合到第一电极（24a）的第二端 ）二极管对（24）。 网络（28）耦合到第一RF传播网络（22a），用于提供到地面的低阻抗DC信号路径，并且用于向在第一RF接收的第一射频（RF）频率传播的信号提供高阻抗信号路径 端子（20a）。 第一传输线谐振器（30）耦合到第一RF传播网络（22a），并且具有在第二RF频率（本地振荡器频率LO）下波长的四分之一的电通路长度。 第二RF传播网络（22b）具有耦合到混合器（20）的第二端子（20b）的第一端和耦合到二极管对（24）的第二电极（24b）的第二端。 第二传输线谐振器（32）耦合到第二RF传播网络（22b），并且具有在第一RF频率下四分之一波长的电通路长度。 另一个网络（34）具有耦合到第二RF传播网络（22b）的第一端和耦合到混频器（20）的第三端子（20c）的第二端，以在第三RF频率（中频） IF），并且用于在其第一端处以在第二RF频率（本地振荡器频率LO）沿着第二RF传播网络（22b）传播的信号提供高阻抗。 使用谐振器（30,32）代替滤波器使混合器能够以混合单片微波/毫米波集成电路（HMIMIC）的形式制成。