公开(公告)号：US06778132B2

公开(公告)日：2004-08-17

申请号：US10365691

申请日：2003-02-13

申请人： Jaromir Palata

发明人： Jaromir Palata

IPC分类号： G01S728

CPC分类号： G01S7/032 ,  G01S7/35 ,  G01S13/56 ,  H03B5/1847

摘要： A microwave sensor is described, with a self-mixing oscillator (1), with a transmitting and receiving antenna (2), with an impedance (3) which is connected between the current or voltage supply (4) and the oscillator (2), and with an evaluation circuit (5), the self-mixing oscillator (2) producing both the transmitted signal and also mixing the transmitted signal with the received signal and the low-frequency mixed (Doppler signal) being tapped on the impedance (3) and supplied to the evaluation circuit (5). The microwave sensor has only lower power consumption, and the microwave sensor can also be economically produced in that the self-mixing oscillator (2) is made as a push-pull oscillator with two transistors (6, 7).

摘要翻译： 使用具有发射和接收天线（2）的自混合振荡器（1）和连接在电流源或电源（4）与振荡器（2）之间的阻抗（3）的微波传感器， ，并且利用评估电路（5），自发混合振荡器（2）产生发射信号并且将发射信号与接收信号和低频混合（多普勒信号）混合，并将其发射到阻抗（3）上 ）并提供给评估电路（5）。微波传感器具有较低的功耗，微波传感器也可以经济地制造，因为自混合振荡器（2）被制成具有两个晶体管的推挽式振荡器 （6,7）。

公开(公告)号：US06462705B1

公开(公告)日：2002-10-08

申请号：US09641115

申请日：2000-08-17

申请人： Thomas E. McEwan

发明人： Thomas E. McEwan

IPC分类号： G01S728

CPC分类号： G01S13/0209

摘要： A dither oscillator randomly modulates the instantaneous phase of a precision radar PRF oscillator. Radar spectral emission lines occurring at multiples of a transmit PRF oscillator are spread by the phase modulation, resulting in a continuous noise-like spectrum for reduced interference. The dither oscillator is based on a CMOS logic inverter and has adjustable coherence. The transition times of the PRF clock are decreased to 100 ps using negative resistance in an emitter follower to help injection-lock an RF oscillator to the PRF clock. Applications include spread-spectrum radar sensors operating in the crowded ISM bands, such as robotic and automotive pulse-echo rangefinders.

摘要翻译： 抖动振荡器随机调制精确雷达PRF振荡器的瞬时相位。 在发射PRF振荡器的倍数处出现的雷达频谱发射线由相位调制扩展，导致用于减小干扰的连续类似噪声的频谱。 抖动振荡器基于CMOS逻辑反相器并具有可调整的相干性。 使用发射极跟随器中的负电阻将PRF时钟的转换时间减少到100 ps，以帮助将RF振荡器注入到PRF时钟。 应用包括在拥挤的ISM频段中工作的扩频雷达传感器，例如机器人和汽车脉冲回波测距仪。

公开(公告)号：US06195036B1

公开(公告)日：2001-02-27

申请号：US09284439

申请日：1999-04-14

申请人： Mikhail Nikolaevich Zybin

发明人： Mikhail Nikolaevich Zybin

IPC分类号： G01S728

CPC分类号： G01S7/282 ,  G01S13/24

摘要： A pulse radar system includes a frequency-agile magnetron comprising an input for giving a feeding voltage of a magnetron tuner. A modulator connected to said magnetron forms pulses of a feeding voltage for the magnetron. A low power signal source also connected to said magnetron generates microwave frequency signals which are given to the magnetron in pauses between pulses. These signals have the frequencies differing from the frequencies of the signals generated by the magnetron and fixed during each period of magnetron pulse repetition. This radar system also includes a signal converter receiving the low power signals reflected by the magnetron. These signals are converted into the signals connected in time to the moments, when the frequencies of the low power source and the frequencies of the magnetron oscillating system coincide with each other. Further, said signals are used for triggering the modulator connected to said converter. In other embodiments, the pulse radar system comprises a receiver connected to a receiving antenna as well as to said low power microwave signal source.

摘要翻译： 脉冲雷达系统包括频率敏捷磁控管，其包括用于给出磁控管调谐器的馈送电压的输入。 连接到所述磁控管的调制器形成用于磁控管的馈电电压的脉冲。 还连接到所述磁控管的低功率信号源产生在脉冲之间的暂停中给予磁控管的微波频率信号。 这些信号的频率与由磁控管产生的信号的频率不同，并在磁控管脉冲重复的每个周期期间固定。 该雷达系统还包括接收由磁控管反射的低功率信号的信号转换器。 当低功率源的频率和磁控管振荡系统的频率相互重合时，这些信号被转换成时间上连接的信号。 此外，所述信号用于触发连接到所述转换器的调制器。 在其他实施例中，脉冲雷达系统包括连接到接收天线以及所述低功率微波信号源的接收机。

公开(公告)号：US06178140B1

公开(公告)日：2001-01-23

申请号：US09275650

申请日：1999-03-24

申请人： Heiko Schlieter

发明人： Heiko Schlieter

IPC分类号： G01S728

CPC分类号： H01Q21/29 ,  G01S3/06 ,  G01S3/32 ,  G01S3/8034 ,  H01Q21/245

摘要： For improving 3D focussing and side lobe suppression in a direction finding system identical groups of transducers are provided at each side of a first and a second axis, which are inclined by an angle 0°≠&psgr;

摘要翻译： 为了改善方向发现系统中的3D聚焦和旁瓣抑制，在第一和第二轴的每一侧设置相同组的换能器，该第一和第二轴倾斜角度0°

公开(公告)号：US06831592B2

公开(公告)日：2004-12-14

申请号：US10332273

申请日：2003-01-07

申请人： Kenneth H Perry

发明人： Kenneth H Perry

IPC分类号： G01S728

CPC分类号： G01S13/0218

摘要： An HF radar system comprises a transmitting system, a receiving system, a signal processing system and a frequency management/ionospheric sounding system. The transmitting system comprises a transmitting antenna array configured to transmit a beam in a near vertical direction and a transmitting device arranged to drive the transmitting antenna array at frequencies suitable for downward refraction by the ionosphere. The receiving system comprises a receiving antenna array configured to receive returning signals from a target area returning to the receiving antenna array via refraction at the ionosphere. The signal processing system comprises a digital data processing system. The frequency management/sounding system comprises cooperating transmitting and receiving systems sending HF signals to the ionosphere and analysing the returning signals. Alternatively, the system may have a duplexed antenna array. The receiving system includes means to discriminate the returning signal produced by a helicopter, other aircraft or surface vessels.

摘要翻译： HF雷达系统包括发射系统，接收系统，信号处理系统和频率管理/电离层探测系统。 发射系统包括发射天线阵列，其被配置为在近垂直方向上发射波束，发射装置被布置成以适于电离层向下折射的频率驱动发射天线阵列。 接收系统包括接收天线阵列，其被配置为从经由电离层的折射返回到接收天线阵列的目标区域接收返回信号。 信号处理系统包括数字数据处理系统。 频率管理/发声系统包括将HF信号发送到电离层的合作发射和接收系统，并分析返回信号。 或者，系统可以具有双工天线阵列。 接收系统包括用于区分由直升机，其他飞机或水面船只产生的返回信号的装置。

公开(公告)号：US06798375B2

公开(公告)日：2004-09-28

申请号：US10221112

申请日：2002-12-18

申请人： Thomas Brosche

发明人： Thomas Brosche

IPC分类号： G01S728

CPC分类号： G01S13/26 ,  G01S7/28 ,  G01S7/36 ,  G01S13/931

摘要： A radar device includes elements for generating a carrier signal having a carrier frequency fT, elements for generating pulses with a pulse repetition frequency fPW, elements for distributing the carrier signal to a transmission branch and a receiving branch, elements for modulate the carrier signal in the transmission path using the undelayed pulses, elements for modulating the carrier signal in the receiving branch using the delayed pulses and for generating a reference signal, elements for mixing the reference signal in the receiving branch with a received signal and elements for integrating the mixed signal. Elements are provided for binary phase shift keying (BPSK) modulation of the carrier signal and elements are provided for switching the polarity of the received signal. A method for suppressing interference in a radar device is also described.

摘要翻译： 雷达装置包括用于产生具有载波频率fT的载波信号的元件，用于产生具有脉冲重复频率fPW的脉冲的元件，用于将载波信号分配给传输分支的元件和接收分支，用于在载波信号中调制载波信号的元件 使用未延迟脉冲的传输路径，使用延迟脉冲调制接收分支中的载波信号并产生参考信号的元件，用于将接收分支中的参考信号与接收信号混合的元件以及用于积分混合信号的元件。 提供了用于载波信号的二进制相移键控（BPSK）调制的元件，并且提供用于切换接收信号的极性的元件。 还描述了一种用于抑制雷达装置中的干扰的方法。

公开(公告)号：US06707416B2

公开(公告)日：2004-03-16

申请号：US10359720

申请日：2003-02-07

申请人： Toru Ishii ,  Tetsu Nishimura ,  Motoi Nakanishi

发明人： Toru Ishii ,  Tetsu Nishimura ,  Motoi Nakanishi

IPC分类号： G01S728

CPC分类号： G01S13/931 ,  G01S7/003 ,  G01S13/345 ,  G01S13/42 ,  G01S13/584

摘要： A radar system is capable of transmitting necessary information through a very small amount of data from a radar device to a host device via a bus with a limited bandwidth. A radar sensor generates a beat signal between a transmission signal and a reflected signal from a target. A signal processor determines a spectrum of the beat signal and compresses the data indicating the spectrum. The resultant compressed data is transmitted to the host device via a bus. The host device decompresses the received data thereby reproducing the spectrum data. The host device then detects the target on the basis of the reproduced spectrum data.

摘要翻译： 雷达系统能够通过具有有限带宽的总线从雷达装置通过非常少量的数据传送必要的信息到主机设备。 雷达传感器在发射信号和来自目标的反射信号之间产生拍频信号。 信号处理器确定拍频信号的频谱并压缩指示频谱的数据。 所得到的压缩数据通过总线传输到主机设备。 主机设备解压接收的数据，从而再现频谱数据。 然后主机设备基于再现的频谱数据检测目标。

公开(公告)号：US06191724B1

公开(公告)日：2001-02-20

申请号：US09238455

申请日：1999-01-28

申请人： Thomas E. McEwan

发明人： Thomas E. McEwan

IPC分类号： G01S728

CPC分类号： G01S7/35 ,  H01Q1/3233 ,  H01Q23/00

摘要： Harmonic techniques are employed to leverage low-cost, ordinary surface mount technology (SMT) to high microwave frequencies where tight beamforming with a small antenna makes reliable, high-accuracy pulse-echo radar systems possible. The implementation comprises a 24 GHz short-pulse transceiver comprised of a pulsed harmonic oscillator employed as a transmitter and an integrating, pulsed harmonic sampler employed as a receiver. The transmit oscillator generates a very short (0.5 ns) phase-coherent harmonic-rich oscillation at a sub-multiple of the actual transmitter frequency. A receiver local oscillator operates at a sub-multiple of the transmit frequency and is triggered with controlled timing to provide a very short (0.5 ns), phase-coherent local oscillator burst. The local oscillator burst is coupled to an integrating harmonic sampler to produce an integrated, equivalent-time replica of the received RF. The harmonic techniques overcome four major problems with non-harmonic approaches: 1) expensive, precision assembly, 2) high local oscillator noise, 3) sluggish oscillator startup, and 4) spurious local oscillator injection locking on external RF. The transceiver can be used for automotive backup and collision warning, precision radar rangefinding for fluid level sensing and robotics, precision radiolocation, wideband communications, and time-resolved holographic imaging.

摘要翻译： 采用谐波技术将低成本，普通的表面贴装技术（SMT）用于高微波频率，其中使用小天线的紧凑波束成形可能使可靠的高精度脉冲回波雷达系统成为可能。 该实现包括一个24GHz的短脉冲收发器，其包括用作发射器的脉冲谐波振荡器和用作接收器的积分脉冲谐波采样器。 发射振荡器在实际发射机频率的子倍数下产生非常短（0.5ns）的相位相干谐波丰富的振荡。 接收机本地振荡器以发射频率的子倍数操作，并且以受控定时触发以提供非常短（0.5ns）的相位相干本地振荡器脉冲串。 本地振荡器脉冲串耦合到积分谐波采样器以产生所接收的RF的集成的等效时间复制品。 谐波技术克服了非谐波方法的四个主要问题：1）昂贵的精密组装，2）高本地振荡器噪声，3）振荡器启动迟缓，4）外部RF上的杂散本地振荡器注入锁定。 收发器可用于汽车后备和碰撞警告，用于液位感测和机器人的精确雷达测距，精确无线电定位，宽带通信和时分解全息成像。

公开(公告)号：US06756936B1

公开(公告)日：2004-06-29

申请号：US10367101

申请日：2003-02-13

申请人： Xiaodong Wu

发明人： Xiaodong Wu

IPC分类号： G01S728

CPC分类号： H01L23/66 ,  G01S7/032 ,  G01S13/56 ,  H01L24/48 ,  H01L24/49 ,  H01L2224/2402 ,  H01L2224/48091 ,  H01L2224/48463 ,  H01L2224/49175 ,  H01L2924/00014 ,  H01L2924/01005 ,  H01L2924/01006 ,  H01L2924/01015 ,  H01L2924/01019 ,  H01L2924/01023 ,  H01L2924/01029 ,  H01L2924/01072 ,  H01L2924/01074 ,  H01L2924/014 ,  H01L2924/10329 ,  H01L2924/12032 ,  H01L2924/12033 ,  H01L2924/1305 ,  H01L2924/1306 ,  H01L2924/13063 ,  H01L2924/13064 ,  H01L2924/19041 ,  H01L2924/19043 ,  H01L2924/19105 ,  H01Q1/3233 ,  H01Q23/00 ,  H05K1/0237 ,  H05K1/16 ,  H05K1/181 ,  H01L2924/00 ,  H01L2224/45099 ,  H01L2224/05599

摘要： A planar microstrip microwave transceiver employing a chip on board design where all components can be surface mounted. The transceiver employs a surface mounted FET chip in a low Q oscillator and a pair of surface mounted Schottky chips in balanced mixer, all of which are wire bonded to microstrip circuitry. This configuration, along with the circuit layout, provides a transceiver module for high frequencies such as 24 GHz that is small, low cost, lightweight and suitable for mass production

摘要翻译： 采用板载设计的平面微带微波收发器，其中所有部件都可以被表面安装。 收发器在低Q振荡器中使用表面安装的FET芯片，并在平衡混频器中使用一对表面安装的肖特基芯片，所有这些芯片都引线接合到微带电路。 这种配置以及电路布局为高频率（例如24 GHz）提供了一种小型，低成本，轻便且适合批量生产的收发模块

公开(公告)号：US06703965B1

公开(公告)日：2004-03-09

申请号：US10089592

申请日：2002-03-28

申请人： Su Guang Ming ,  Wen Xiao Ping ,  Sun Ying Xin ,  Ng Yew Hoe Joseph

发明人： Su Guang Ming ,  Wen Xiao Ping ,  Sun Ying Xin ,  Ng Yew Hoe Joseph

IPC分类号： G01S728

CPC分类号： G01S13/56 ,  G01S7/032

摘要： The present motion detector unit effectively suppresses harmonic frequencies and is cost-effective to build. The motion detector unit includes a main casing which houses the main microwave circuit board (3). Enclosing the casing and the circuit board (3) is a cover. An antenna circuit board is attached to the bottom side of the main casing. The cover has partitioning walls at the bottom side of the cover which press against the main microwave circuit board (3) when the cover is enclosed over the casing. The circuit on the main microwave circuit board (3) includes a microwave oscillator for producing an oscillatory signal. The oscillator is coupled to a ground and to a filter which is a low-pass filter with a relatively wide stop bandwidth. The filter is then coupled to a transmitting antenna. A power supply is routed through the transmission antenna and provides DC voltage to the microwave oscillator. The oscillator is further coupled to a mixer. The mixer is coupled to a filter which is in turn coupled to a receiving antenna.

摘要翻译： 本运动检测器单元有效地抑制了谐波频率并且构建成本有效。 运动检测器单元包括容纳主微波电路板（3）的主壳体。 封闭外壳和电路板（3）是一个盖子。 天线电路板安装在主壳体的底侧。 当盖子封闭在外壳上时，盖子在盖子的底侧具有压靠主微波电路板（3）的分隔壁。 主微波电路板（3）上的电路包括用于产生振荡信号的微波振荡器。 振荡器耦合到接地和滤波器，滤波器是具有相对宽的停止带宽的低通滤波器。 然后将滤波器耦合到发射天线。 电源通过发射天线布线，并向微波振荡器提供直流电压。 振荡器进一步耦合到混频器。 混频器耦合到滤波器，滤波器又耦合到接收天线。