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10 条记录 (耗时 0.02 秒)

    Low noise non-foster circuit
    3.
    发明授权
    Low noise non-foster circuit 有权

    公开(公告)号：US10340889B1

    公开(公告)日：2019-07-02

    申请号：US15275151

    申请日：2016-09-23

    申请人： HRL Laboratories, LLC

    发明人： Zhiwei A. Xu ,  Carson R. White ,  Jonathan J. Lynch

    IPC分类号： H01Q1/52 ,  H03H11/04 ,  H03H11/28

    摘要： A method of and an apparatus for reducing noise in a non-Foster circuit having at least a pair of cross coupled transistor devices, each transistor device of the pair of cross coupled transistor devices having a pair of current carrying electrodes. The method and apparatus involves coupling inductors with each pair of the current carrying electrodes of each of the cross-coupled transistor devices in the non-Foster circuit, the inductors also being coupled with voltage and/or current sources associated with or coupled to the non-Foster circuit. The nominal values of the inductors are selected to provide a load asymmetry, so that the load inductor in the input side of the non-Foster circuit has a larger inductance than the load inductor at the output side of non-Foster circuit.

    Method and apparatus for processing coded aperture radar (CAR) signals
    4.
    发明授权
    Method and apparatus for processing coded aperture radar (CAR) signals 有权
    编码孔径雷达（CAR）信号的处理方法和装置

    公开(公告)号：US09581681B2

    公开(公告)日：2017-02-28

    申请号：US14561111

    申请日：2014-12-04

    申请人： HRL Laboratories, LLC

    发明人： Jonathan J. Lynch ,  Zhiwei A. Xu ,  Yen-Cheng Kuan

    IPC分类号： G01S13/72 ,  G01S7/28 ,  G01S7/02 ,  G01S13/02 ,  G01S13/34 ,  G01S13/44 ,  G01S13/536 ,  G01S7/35 ,  G01S13/88 ,  G01S13/93 ,  G01S13/94

    CPC分类号： G01S7/2813 ,  G01S7/02 ,  G01S13/02 ,  G01S13/343 ,  G01S13/4418 ,  G01S13/4463 ,  G01S13/536 ,  G01S13/882 ,  G01S13/931 ,  G01S13/94 ,  G01S2007/356

    摘要： A radar system in which Coded Aperture Radar processing is performed on received radar signals reflected by one or more objects in a field of view which reflect a transmitted signal which covers a field of view with K sweeps and each sweep including Q frequency changes. For Type II CAR, the transmitted signal also includes N modulated codes per frequency step. The received radar signals are modulated by a plurality of binary modulators the results of which are applied to a mixer. The output of the mixer, for one acquisition results in a set of Q·K (for Type I CAR) or Q·K·N (for Type II CAR) complex data samples, is distributed among a number of digital channels, each corresponding to a desired beam direction. For each channel, the complex digital samples are multiplied, sample by sample, by a complex signal mask that is different for each channel.

    摘要翻译： 一种雷达系统，其中在视场中由一个或多个物体反射的接收的雷达信号执行编码孔径雷达处理，其反映覆盖具有K个扫描的视​​场的发射信号，并且每个扫描包括Q个频率变化。 对于II型CAR，发射信号还包括每个频率步长的N个调制码。 所接收的雷达信号由多个二进制调制器调制，其结果应用于混频器。 对于一次采集，混合器的输出导致一组Q·K（对于I型CAR）或Q·K·N（对于II型CAR）复数数据样本，分布在多个数字通道中，每个对应 到期望的波束方向。 对于每个通道，复数数字样本通过样本逐个乘以每个通道不同的复信号掩码。

    Coded aperture beam analysis method and apparatus
    5.
    发明授权
    Coded aperture beam analysis method and apparatus 有权
    编码孔径光束分析方法和装置

    公开(公告)号：US09535151B2

    公开(公告)日：2017-01-03

    申请号：US13725621

    申请日：2012-12-21

    申请人： HRL Laboratories, LLC

    发明人： Jonathan J. Lynch

    IPC分类号： G01S3/72 ,  G01S3/46 ,  G01S13/66 ,  G01S13/02

    CPC分类号： G01S3/72 ,  G01S3/46 ,  G01S13/66 ,  G01S2013/0245

    摘要： A method and apparatus for determining the range, radial velocity, and bearing angles of scattering objects reflecting RF signals or for determining the range, radial velocity, and bearing angles of sources RF signals. An array of antenna elements is utilized, the array of antenna elements each having an associated two state modulator wherein transmitted and/or received energy is phase encoded according to a sequence of multibit codes, the bits of the multibit codes each preferably having two states with approximately a 50% probability for each of the two states occurring within each given multibit code in said sequence of multibit codes, thereby allowing the determination of range, radial velocity, and bearing angles through digital computation after the scattered signals have been received.

    摘要翻译： 用于确定反射RF信号的散射物体的范围，径向速度和方位角的方法和装置，或用于确定源RF信号的范围，径向速度和方位角。 使用天线元件阵列，天线元件阵列各自具有相关联的两个状态调制器，其中发射和/或接收的能量根据多位代码的序列被相位编码，多位代码的比特优选地具有两个状态， 在所述多位代码序列中的每个给定的多位代码内发生的两个状态中的每一个的概率约为50％，从而允许通过在接收到散射信号之后的数字计算来确定范围，径向速度和方位角。

    Broadband non-Foster decoupling networks for superdirective antenna arrays
    6.
    发明授权
    Broadband non-Foster decoupling networks for superdirective antenna arrays 有权
    用于超导向天线阵列的宽带非福斯特去耦网络

    公开(公告)号：US09276554B2

    公开(公告)日：2016-03-01

    申请号：US13856403

    申请日：2013-04-03

    申请人： HRL LABORATORIES, LLC

    发明人： Jonathan J. Lynch ,  Carson R. White

    IPC分类号： H01Q21/00 ,  H03H7/48 ,  H03H7/52

    CPC分类号： H03H7/485 ,  H01Q1/523 ,  H01Q3/26 ,  H01Q21/0006 ,  H01Q21/14 ,  H01Q21/20 ,  H01Q21/28 ,  H03H7/48 ,  H03H7/52

    摘要： A four port antenna decoupling network which has only two negative capacitors and four or more positive capacitors and a method of improving low frequency receiving performance of two element and four element antenna arrays using one or more wideband decoupling circuits wherein each of said wideband decoupling circuits contain a maximum of two non-Foster components, the two non-Foster components preferably simulating negative capacitors.

    摘要翻译： 仅具有两个负电容器和四个或更多个正电容器的四端口天线去耦网络和使用一个或多个宽带去耦电路改善两个元件和四元件天线阵列的低频接收性能的方法，其中每个所述宽带去耦电路包含 最多两个非福斯特分量，两个非福斯特分量最好模拟负电容。

    Method and apparatus to increase radar range
    7.
    发明授权
    Method and apparatus to increase radar range 有权

    公开(公告)号：US11536800B2

    公开(公告)日：2022-12-27

    申请号：US17207470

    申请日：2021-03-19

    申请人： HRL Laboratories, LLC

    发明人： Florian G. Herrault ,  Jonathan J. Lynch

    IPC分类号： H01L23/538 ,  H01L23/482 ,  H01L23/367 ,  H01L25/065 ,  H01L25/16 ,  H01L21/56 ,  H01L21/683 ,  G01S7/03 ,  H01Q1/32 ,  H01Q23/00

    摘要： An integrated radar circuit comprising: a first substrate, of a first semiconductor material, said first substrate comprising an integrated transmit and receive radar circuit; a second substrate, of a second semiconductor material, said second substrate comprising at least on through-substrate cavity having cavity walls; at least one discrete transistor chip, of a third semiconductor material, said at least one discrete transistor chip having chip walls and being held in said at least one through-substrate cavity by a metal filling extending from at least one cavity wall to at least one chip wall; a conductor on said second substrate, electrically connecting a portion of said integrated transmit and receive radar circuit to a discrete transistor on said at least one discrete transistor chip.

    Broadband non-Foster Decoupling Networks for Superdirective Antenna Arrays
    10.
    发明申请
    Broadband non-Foster Decoupling Networks for Superdirective Antenna Arrays 有权
    用于超向量天线阵列的宽带非Foster去耦网络

    公开(公告)号：US20140300431A1

    公开(公告)日：2014-10-09

    申请号：US13856403

    申请日：2013-04-03

    申请人： HRL LABORATORIES, LLC

    发明人： Jonathan J. Lynch ,  Carson R. White

    IPC分类号： H03H7/48

    CPC分类号： H03H7/485 ,  H01Q1/523 ,  H01Q3/26 ,  H01Q21/0006 ,  H01Q21/14 ,  H01Q21/20 ,  H01Q21/28 ,  H03H7/48 ,  H03H7/52

    摘要： A four port antenna decoupling network which has only two negative capacitors and four or more positive capacitors and a method of improving low frequency receiving performance of two element and four element antenna arrays using one or more wideband decoupling circuits wherein each of said wideband decoupling circuits contain a maximum of two non-Foster components, the two non-Foster components preferably simulating negative capacitors.

    摘要翻译： 仅具有两个负电容器和四个或更多个正电容器的四端口天线去耦网络和使用一个或多个宽带去耦电路改善两个元件和四元件天线阵列的低频接收性能的方法，其中每个所述宽带去耦电路包含 最多两个非福斯特分量，两个非福斯特分量最好模拟负电容。