High frequency transformer
    1.
    发明授权
    High frequency transformer 失效
    高频变压器

    公开(公告)号:US4507640A

    公开(公告)日:1985-03-26

    申请号:US444637

    申请日:1982-11-26

    IPC分类号: H01F17/04 H01F19/04 H01F27/28

    CPC分类号: H01F17/043 H01F19/04

    摘要: A high frequency, transformer capable of operating at high power levels is disclosed. Conductive ribbons including end (terminal) sections which permit the terminal leads of a plurality of windings to be extended from the windings in an overlapping relationship and in the selected order is utilized for the windings. Preferably, the core is formed of a material having low eddy current losses and characteristics permitting the core to be molded such that the windings are substantially surrounded by the core with the exception of small openings through which the leads extend.

    摘要翻译: 公开了能够在高功率水平下工作的高频变压器。 用于绕组的导电带包括允许多个绕组的端子引线以重叠关系并以所选顺序从绕组延伸的端部(端子)部分。 优选地,芯由具有低涡流损耗和允许芯被模制的特性的材料形成,使得绕组基本上被芯围绕,除了引线延伸穿过的小开口。

    Self-oscillating DC-DC converter apparatus and method especially
adaptable for VHF operation
    2.
    发明授权
    Self-oscillating DC-DC converter apparatus and method especially adaptable for VHF operation 失效
    自振式DC-DC转换器装置和方法特别适用于VHF操作

    公开(公告)号:US6055162A

    公开(公告)日:2000-04-25

    申请号:US41213

    申请日:1998-03-12

    IPC分类号: H02M3/335 H02M7/538

    CPC分类号: H02M3/33576

    摘要: A DC-DC voltage converter 40, which is adaptable to VHF operation, has a power oscillator 52 to which a filtered input DC voltage 50 is applied for conversion to an output DC voltage. The power oscillator includes a push-pull amplifier 58, 60 and an impedance transformation circuit 62 to which the amplifier is connected. The power oscillator also includes a rectifier circuit 64 which is connected to the impedance transformation circuit. A feedback circuit 68 controls the frequency of the oscillator to regulate the output DC voltage. The oscillator frequency depends on the impedance values of oscillator circuit components and the values of a plurality of oscillator component intrinsic parameters.

    摘要翻译: 适用于VHF操作的DC-DC电压转换器40具有电源振荡器52,经过滤波的输入DC电压50被施加到该功率振荡器52以转换为输出DC电压。 功率振荡器包括推挽放大器58,60和放大器连接到的阻抗变换电路62。 功率振荡器还包括连接到阻抗变换电路的整流电路64。 反馈电路68控制振荡器的频率来调节输出直流电压。 振荡器频率取决于振荡器电路组件的阻抗值和多个振荡器组件固有参数的值。

    Pulsed radar apparatus and method employing power distribution system
having reduced cost and weight and enhanced efficiency and reliability
    5.
    发明授权
    Pulsed radar apparatus and method employing power distribution system having reduced cost and weight and enhanced efficiency and reliability 失效
    采用配电系统的脉冲雷达装置和方法,降低了成本和重量,提高了效率和可靠性

    公开(公告)号:US5945941A

    公开(公告)日:1999-08-31

    申请号:US41214

    申请日:1998-03-12

    IPC分类号: G01S7/282 G01S13/02 H02J1/00

    摘要: A power distribution system (12) is provided in radar apparatus to distribute power from a 270 VDC source (60) through an intermediate power converter (70) and very high frequency (VHF) regulator/modulator units (80). Bus conductors (71,74) interconnect the source, the intermediate power converter, and the VHF units. Capacitors (71, 76) are connected to the bus conductors on the input and output sides of the intermediate power converter. Each VHF unit supplies modulating pulses to RF amplifiers (82) of an AESA array of the radar apparatus.

    摘要翻译: 配电系统(12)设置在雷达装置中,以通过中间功率转换器(70)和非常高频(VHF)调节器/调制器单元(80)从270VDC源(60)分配功率。 总线导体(71,74)互连源,中间功率转换器和VHF单元。 电容器(71,76)连接到中间功率转换器的输入和输出侧的总线导体。 每个VHF单元将调制脉冲提供给雷达装置的AESA阵列的RF放大器(82)。

    Dual channel microwave transmit/receive module for an active aperture of a radar system
    6.
    发明授权
    Dual channel microwave transmit/receive module for an active aperture of a radar system 有权
    双通道微波发射/接收模块,用于雷达系统的主动孔径

    公开(公告)号:US06278400B1

    公开(公告)日:2001-08-21

    申请号:US09450905

    申请日:1999-11-29

    IPC分类号: G01S728

    摘要: Two discrete transmit/receive (T/R) channels are implemented in a single common T/R module package having the capability of providing combined functions, control and power conditioning while utilizing a single multi-cavity, multi-layer substrate comprised of high or low temperature cofired ceramic layers. The ceramic layers have outer surfaces including respective metallization patterns of ground planes and stripline conductors as well as feedthroughs or vertical vias formed therein for providing three dimensional routing of both shielded RF and DC power and logic control signals so as to configure, among other things, a pair of RF manifold signal couplers which are embedded in the substrate and which transition to a multi-pin blind mate press-on RF connector assembly at the front end of the package. DC and logic input/output control signals are connected to a plurality of active circuit components including application specific integrated circuits (ASICs) and monolithic microwave integrated circuit chips (MMICs) via spring contact pads at the rear of the package. An RF connector assembly for coupling transmit and receive signals to and from the module is located at the front of the package. The RF transmit power amplifiers which generate most of the heat in the module package are located in a first pair of cavities formed in the substrate directly behind the RF connector assembly and are mounted directly on a pair of flat heat sink plates which are secured to the bottom of the substrate and acts as a thermal interface to an external heat exchanger such as a cold plate. A second pair of cavities in which are located the RF receive signal amplifiers and their respective receiver protector elements, is located beside the first pair of cavities directly behind the RF connector for reducing RF signal loss.

    摘要翻译: 在单个公共T / R模块封装中实现两个离散的发送/接收(T / R)信道,其具有提供组合功能,控制和功率调节的能力,同时利用单个多腔多层衬底,其包括高或 低温共烧陶瓷层。 陶瓷层具有包括接地面和带状线导体的相应金属化图案以及形成在其中的馈通或垂直通孔的外表面,用于提供屏蔽RF和DC电力和逻辑控制信号两者的三维布线,以便除其他外, 一对RF歧管信号耦合器,其嵌入在衬底中并且转变到封装前端处的多引脚盲配合压接RF连接器组件。 DC和逻辑输入/输出控制信号通过封装后部的弹簧接触焊盘连接到包括专用集成电路(ASIC)和单片微波集成电路芯片(MMIC)的多个有源电路部件。 用于将模块的发送和接收信号耦合到RF模块的RF连接器组件位于封装的前部。 在模块封装中产生大部分热量的RF发射功率放大器位于直接位于RF连接器组件后面的衬底中形成的第一对空腔中,并直接安装在一对平坦的散热板上, 并且用作与诸如冷板之类的外部热交换器的热界面。 位于RF接收信号放大器及其各自的接收器保护器元件的第二对空腔位于RF连接器正后方的第一对空腔旁边,用于减少RF信号损失。

    Magnetic means for determining partial pressure of oxygen particularly
in underwater breathing apparatus
    8.
    发明授权
    Magnetic means for determining partial pressure of oxygen particularly in underwater breathing apparatus 失效
    用于确定氧分压的磁性方法,特别是在水下呼吸器中

    公开(公告)号:US4173975A

    公开(公告)日:1979-11-13

    申请号:US875654

    申请日:1978-02-06

    CPC分类号: G01N27/74

    摘要: A paramagnetic oxygen sensor wherein a reference chamber is oscillated into and out of an air gap of a magnetic circuit by means of a piezoelectric bender bar. The oscillating reference periodically displaces the ambient gas under measurement in the air gap and causes a varying flux in the magnetic circuit which is sensed, amplified and provided as an output signal indicative of the partial pressure of oxygen of the gas mixture.

    摘要翻译: 顺磁性氧传感器,其中通过压电弯曲杆将参考室摆动进出磁路的气隙。 振荡基准周期性地使气隙中测量的环境气体移位,并且在磁路中引起变化的磁通,其被感测,放大并作为指示气体混合物的氧分压的输出信号提供。

    Dual channel microwave transmit/receive module for an active aperture of
a radar system
    10.
    发明授权
    Dual channel microwave transmit/receive module for an active aperture of a radar system 失效
    双通道微波发射/接收模块,用于雷达系统的主动孔径

    公开(公告)号:US6094161A

    公开(公告)日:2000-07-25

    申请号:US456407

    申请日:1999-12-08

    摘要: Two discrete transmit/receive (T/R) channels are implemented in a single common T/R module package having the capability of providing combined functions, control and power conditioning while utilizing a single multi-cavity, multi-layer substrate comprised of high temperature cofired ceramic (HTCC) layers. The ceramic layers have outer surfaces including respective metallization patterns of ground planes and stripline conductors as well as feedthroughs or vertical vias formed therein for providing three dimensional routing of both shielded RF and DC power and logic control signals so as to configure, among other things, a pair of RF manifold signal couplers which are embedded in the substrate and which transition to a multi-pin blind mate press-on RF connector assembly at the front end of the package. DC and logic input/output control signals are connected to a plurality of active circuit components including application specific integrated circuits (ASICs) and monolithic microwave integrated circuit chips (MMICs) via spring contact pads at the rear of the package. The MMICs which generate substantially all of the heat are located in multi-level cavities formed in the substrate and are bonded directly to a generally flat a heat sink plate which is secured to the bottom of the substrate and acts as a thermal interface to an external heat exchanger such as a cold plate. DC power conditioning is also provided by a capacitive bank type of energy storage subassembly externally attached to the rear of the module package for supplying supplementary power to the module during peak power operation. The T/R module is one module of an array of like T/R modules coupled to an active aperture of a radar system.

    摘要翻译: 两个离散的发射/接收(T / R)信道在单个公共T / R模块封装中实现,其具有提供组合功能,控制和功率调节的能力,同时利用单个多腔多层衬底,其包括高温 共烧陶瓷(HTCC)层。 陶瓷层具有包括接地面和带状线导体的相应金属化图案以及形成在其中的馈通或垂直通孔的外表面,用于提供屏蔽RF和DC电力和逻辑控制信号两者的三维布线,以便除其他外, 一对RF歧管信号耦合器,其嵌入在衬底中并且转变到封装前端处的多引脚盲配合压接RF连接器组件。 DC和逻辑输入/输出控制信号通过封装后部的弹簧接触焊盘连接到包括专用集成电路(ASIC)和单片微波集成电路芯片(MMIC)的多个有源电路部件。 产生基本上所有热量的MMIC位于形成在基板中的多层空腔中,并且直接结合到大致平坦的散热板上,该散热板固定到基板的底部并用作与外部的热接口 换热器如冷板。 直流功率调节也由外部连接到模块封装后部的电容式储能型存储子组件提供,用于在峰值功率操作期间向模块提供补充功率。 T / R模块是耦合到雷达系统的有效孔径的类似T / R模块的阵列的一个模块。