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    Methods and apparatus for detection/classification of radar targets including birds and other hazards
    2.
    发明授权
    Methods and apparatus for detection/classification of radar targets including birds and other hazards 有权
    用于雷达目标检测/分类的方法和装置，包括鸟类和其他危害

    公开(公告)号：US07948429B2

    公开(公告)日：2011-05-24

    申请号：US12435508

    申请日：2009-05-05

    Applicant: Peter R. Drake ,  Yuchoi F. Lok

    Inventor： Peter R. Drake ,  Yuchoi F. Lok

    IPC: G01S13/00

    CPC classification number: G01S7/024 ,  G01S7/411 ,  G01S7/412 ,  G01S13/424

    Abstract: Methods and apparatus for processing data from a low beam channel, a high beam channel and a weather channel to perform an altitude estimation based upon a target amplitude ratio between the low beam channel and the high beam channel and target range, and for performing target detection based upon data from the weather channel. In one embodiment, migrating birds can be more accurately detected and classified than with conventional systems.

    Abstract translation: 用于处理来自低光束通道，远光通道和天气通道的数据的方法和装置，以基于近光通道与远光通道与目标范围之间的目标幅度比执行高度估计，并用于执行目标检测 基于天气频道的数据。 在一个实施例中，与常规系统相比，可以更准确地检测和分类迁移的鸟类。

    High power microwave transistor amplifier
    3.
    发明授权
    High power microwave transistor amplifier 有权
    大功率微波晶体管放大器

    公开(公告)号：US06281574B1

    公开(公告)日：2001-08-28

    申请号：US09405931

    申请日：1999-09-27

    Applicant: Peter R. Drake ,  Keith R. Kessler

    Inventor： Peter R. Drake ,  Keith R. Kessler

    IPC: H01L2310

    CPC classification number: H01L23/66 ,  H01L23/3732 ,  H01L24/48 ,  H01L2224/05599 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/85399 ,  H01L2924/00014 ,  H01L2924/01004 ,  H01L2924/01019 ,  H01L2924/01077 ,  H01L2924/1305 ,  H01L2924/16195 ,  H01L2924/3025 ,  H01L2924/00 ,  H01L2224/45015 ,  H01L2924/207 ,  H01L2224/45099

    Abstract: A method for operating a microwave amplifier wherein a packaging arrangement is provided. The packaging arrangement includes: (i) a mounting thermally conducting mounting flange; (ii) an isomorphic, thermally conductive material disposed on the flange; (iii) a circuit comprising a semiconductor chip having a transistor arranged as the amplifier, such amplifier being adapted to operate at a nominal microwave frequency with a band of frequencies, disposed on a portion of a surface of the isomorphic, thermally conductive material, other surface portions of the thermally conductive material extending laterally beyond the portion of the material having the semiconductor chip disposed thereon; (iv) a corral having an aperture through an inner region thereof, the isothermal material being disposed within the aperture, such corral having an outer region thereon mounted to surface portions of the flange. The amplifier is biased for Class C operation. The method includes feeding pulsed microwave signals to the amplifier for amplification thereby. The pulses have pulse widths greater than 750 microseconds and have a duty cycle of about 25 percent or more. Thus, the amplifier is now able to operate with a substantially continuous wave input signal.

    Abstract translation: 一种用于操作其中提供封装装置的微波放大器的方法。 包装布置包括：（i）安装导热安装法兰; （ii）设置在凸缘上的同构导热材料; （iii）包括具有被布置为放大器的晶体管的半导体芯片的电路，该放大器适于以设置在同构导热材料的表面的一部分上的具有频带的标称微波频率操作，其它 导热材料的表面部分横向延伸超过其上设置有半导体芯片的材料的部分; （iv）具有通过其内部区域的孔的畜栏，等温材料设置在孔内，这样的畜栏具有安装在凸缘的表面部分上的外部区域。 放大器偏置于C类操作。 该方法包括将脉冲微波信号馈送到放大器以进行放大。 脉冲的脉冲宽度大于750微秒，占空比约为25％以上。 因此，放大器现在能够以基本上连续的波输入信号进行操作。

    Spurious frequency suppressor
    4.
    发明授权
    Spurious frequency suppressor 失效
    杂频抑制器

    公开(公告)号：US5381110A

    公开(公告)日：1995-01-10

    申请号：US19324

    申请日：1993-02-10

    Applicant: Thomas M. O'Leary ,  Peter R. Drake ,  Philip R. Merrill, deceased

    Inventor： Thomas M. O'Leary ,  Peter R. Drake ,  Philip R. Merrill, deceased

    IPC: G01S7/282 ,  G01S13/02 ,  H03F1/08 ,  H03F3/24 ,  H03H7/25 ,  H04B1/10 ,  H03F1/32

    CPC classification number: G01S7/023 ,  G01S7/282 ,  H03F1/083 ,  H03H7/255 ,  H03F2200/198

    Abstract: Spurious frequencies are suppressed in a transmitter by an RF pulse fall time controller circuit comprising a quadrature hybrid matched attenuator located between a predriver and the first stage of class "C" driver amplifiers. The circuit linearly attenuates RF pulses and slows pulse fall time. Operation of the circuit is initiated when the rising edge of a pretrigger starts a pretrigger generator which then triggers the application of current bias to the attenuator circuit. After a controlled period of time, the circuit decreases the forward current bias of PIN diodes in the attenuator thereby increasing the diodes' series resistance and increasing the attenuation of the RF pulses. This creates a slow pulse fall time thereby suppressing spurious emissions caused by parasitic ringing of the cascaded Class C common base transistor amplifiers in the transmitter.

    Abstract translation: 射频脉冲下降时间控制器电路在发射机中抑制杂散频率，该电路包括位于预驱动器和“C”类驱动放大器的第一级之间的正交混合匹配衰减器。 电路线性衰减RF脉冲并减慢脉冲下降时间。 当预触发器的上升沿启动预触发发生器时，电路的操作开始，然后触发器产生电流偏置到衰减器电路。 在受控的一段时间后，电路减小了衰减器中PIN二极管的正向电流偏置，从而增加了二极管的串联电阻并增加了RF脉冲的衰减。 这产生缓慢的脉冲下降时间，从而抑制由发射机中级联的C类公共基极晶体管放大器的寄生振荡引起的杂散发射。

    Spurious frequency suppressor
    5.
    发明授权
    Spurious frequency suppressor 失效

    公开(公告)号：US5568105A

    公开(公告)日：1996-10-22

    申请号：US275898

    申请日：1994-11-18

    Applicant: Thomas M. O'Leary ,  Peter R. Drake ,  Philip R. Merrill, deceased

    Inventor： Thomas M. O'Leary ,  Peter R. Drake ,  Philip R. Merrill, deceased

    IPC: G01S7/282 ,  G01S13/02 ,  H03H7/25 ,  H03H7/24

    CPC classification number: G01S7/023 ,  G01S7/282 ,  H03H7/255

    Abstract: Spurious frequencies are suppressed in a transmitter by an RF pulse fall time controller circuit comprising a quadrature hybrid matched attenuator located between a predriver and the first stage of class "C" driver amplifiers. The circuit linearly attenuates RF pulses and slows pulse fall time. Operation of the circuit is initiated when the rising edge of a pretrigger starts a pretrigger generator which then triggers the application of current bias to the attenuator circuit. After a controlled period of time, the circuit decreases the forward current bias of PIN diodes in the attenuator thereby increasing the diodes' series resistance and increasing the attenuation of the RF pulses. This creates a slow pulse fall time thereby suppressing spurious emissions caused by parasitic ringing of the cascaded Class C common base transistor amplifiers in the transmitter.

    METHODS AND APPARATUS FOR DETECTION/CLASSIFICATION OF RADAR TARGETS INCLUDING BIRDS AND OTHER HAZARDS
    6.
    发明申请
    METHODS AND APPARATUS FOR DETECTION/CLASSIFICATION OF RADAR TARGETS INCLUDING BIRDS AND OTHER HAZARDS 有权
    用于检测/分类雷达目标的方法和装置，包括BIRDS和其他危害

    公开(公告)号：US20100079328A1

    公开(公告)日：2010-04-01

    申请号：US12435508

    申请日：2009-05-05

    Applicant: Peter R. Drake ,  Yochoi F. Lok

    Inventor： Peter R. Drake ,  Yochoi F. Lok

    IPC: G01S13/89

    CPC classification number: G01S7/024 ,  G01S7/411 ,  G01S7/412 ,  G01S13/424

    Abstract: Methods and apparatus for processing data from a low beam channel, a high beam channel and a weather channel to perform an altitude estimation based upon a target amplitude ratio between the low beam channel and the high beam channel and target range, and for performing target detection based upon data from the weather channel. In one embodiment, migrating birds can be more accurately detected and classified than with conventional systems.

    Abstract translation: 用于处理来自低光束通道，远光通道和天气通道的数据的方法和装置，以基于近光通道与远光通道与目标范围之间的目标幅度比执行高度估计，并用于执行目标检测 基于天气频道的数据。 在一个实施例中，与常规系统相比，可以更准确地检测和分类迁移的鸟类。

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