Capacitively loaded spurline filter
    2.
    发明授权
    Capacitively loaded spurline filter 有权
    电容式负载spurline过滤器

    公开(公告)号:US08384498B2

    公开(公告)日:2013-02-26

    申请号:US12613724

    申请日:2009-11-06

    IPC分类号: H01P1/203 H01P7/08

    CPC分类号: H01P1/20381 H01P7/082

    摘要: In an exemplary embodiment, a spurline filter comprises a capacitive element connected to a spur and either a through-line of the spurline filter or ground. In another embodiment, multiple capacitive elements are connected to the spur. In an exemplary embodiment, the capacitively loaded spurline filter provides a band rejection frequency response similar to the band rejection frequency response of a similar spurline filter that does not comprise at least one capacitive element but the capacitively loaded spurline filter has half the layout area or less. In an exemplary embodiment, the spurline filter comprises capacitive elements, where the capacitive elements are configured to reduce the resonant frequency of the filter.

    摘要翻译: 在示例性实施例中,支线滤波器包括连接到支线和支线滤波器或地的直线的电容元件。 在另一个实施例中,多个电容元件连接到支线。 在示例性实施例中,电容加载的线阵滤波器提供类似于不包括至少一个电容元件的类似线阵滤波器的频带阻抗频率响应的带阻频率响应,但是电容加载的线阵滤波器具有一半的布局面积或更小 。 在示例性实施例中,支线滤波器包括电容元件,其中电容元件被配置为降低滤波器的谐振频率。

    LEADFRAME PACKAGE WITH INTEGRATED PARTIAL WAVEGUIDE INTERFACE
    3.
    发明申请
    LEADFRAME PACKAGE WITH INTEGRATED PARTIAL WAVEGUIDE INTERFACE 有权
    具有集成的部分波导接口的LEADFRAME封装

    公开(公告)号:US20120051000A1

    公开(公告)日:2012-03-01

    申请号:US13221693

    申请日:2011-08-30

    IPC分类号: H05K1/14 H01L31/18

    摘要: A MMIC package is disclosed comprising: a leadframe based overmolded package, a die positioned within the overmolded package; and a partial waveguide interface, wherein the partial waveguide interface is integral with the overmolded package facilitating low cost and reliable assembly. Also disclosed is an overmolded package where the die sits on a metal portion exposed on the bottom of the package and the package is configured for attachment to a chassis of a transceiver such that heat from the die is easily dissipated to the chassis with a direct thermal path. The disclosure facilitates parallel assembly of MMIC packages and use of pick and place/surface mounting technology for attaching the MMIC packages to the chassis of transceivers. This facilitates reliable and low cost transceivers.

    摘要翻译: 公开了一种MMIC封装,包括:基于引线框的包覆成型封装,位于所述包覆成型封装内的管芯; 和部分波导接口,其中部分波导接口与包覆成型的封装集成,促进了低成本和可靠的组装。 还公开了一种包覆成型的封装,其中管芯位于暴露在封装底部的金属部分上,并且封装构造成用于附接到收发器的底架,使得来自模具的热量容易地以直接热量散发到底架 路径。 本公开有助于MMIC封装的并行组装以及使用拾取和放置/表面安装技术将MMIC封装连接到收发器的底盘。 这有助于可靠和低成本的收发器。

    CAPACITIVELY LOADED SPURLINE FILTER
    4.
    发明申请
    CAPACITIVELY LOADED SPURLINE FILTER 有权
    电容式充电滤芯

    公开(公告)号:US20100117766A1

    公开(公告)日:2010-05-13

    申请号:US12613724

    申请日:2009-11-06

    IPC分类号: H01P1/203

    CPC分类号: H01P1/20381 H01P7/082

    摘要: In an exemplary embodiment, a spurline filter comprises a capacitive element connected to a spur and either a through-line of the spurline filter or ground. In another embodiment, multiple capacitive elements are connected to the spur. In an exemplary embodiment, the capacitively loaded spurline filter provides a band rejection frequency response similar to the band rejection frequency response of a similar spurline filter that does not comprise at least one capacitive element but the capacitively loaded spurline filter has half the layout area or less. In an exemplary embodiment, the spurline filter comprises capacitive elements, where the capacitive elements are configured to reduce the resonant frequency of the filter.

    摘要翻译: 在示例性实施例中,支线滤波器包括连接到支线和支线滤波器或地的直线的电容元件。 在另一个实施例中,多个电容元件连接到支线。 在示例性实施例中,电容加载的线阵滤波器提供类似于不包括至少一个电容元件的类似线阵滤波器的频带阻抗频率响应的带阻频率响应,但是电容加载的线阵滤波器具有一半的布局面积或更小 。 在示例性实施例中,支线滤波器包括电容元件,其中电容元件被配置为降低滤波器的谐振频率。

    Gas turbine engine fuel system
    6.
    发明授权
    Gas turbine engine fuel system 失效
    燃气轮机发动机燃油系统

    公开(公告)号:US4964270A

    公开(公告)日:1990-10-23

    申请号:US352953

    申请日:1989-05-17

    IPC分类号: F02C7/22 F02C7/232 F02C7/26

    CPC分类号: F02C7/232 F05D2260/602

    摘要: A gas turbine engine fuel system comprises a main fuel manifold and starter fuel manifold which direct fuel into the combustion apparatus of a gas turbine engine. During normal engine operation, fuel flow to the starter manifold is prevented by a solenoid valve. Air from within the combustion apparatus then flows back through the starter manifold and into a fuel drains system of the engine to purge the starter manifold of fuel. This purging of fuel in the starter manifold engine operation prevents the undesirable leakage of fuel into the combustion apparatus from the starter manifold.

    摘要翻译: 燃气涡轮发动机燃料系统包括主燃料歧管和将燃料引入燃气涡轮发动机的燃烧装置的起动器燃料歧管。 在正常的发动机操作期间,通过电磁阀防止了通向起动器歧管的燃料流。 然后,来自燃烧装置内的空气然后通过起动歧管回流到发动机的燃料排放系统中,以清除燃料的起动器歧管。 在起动器歧管发动机操作中的这种清除燃料防止燃料从起动器歧管不期望地泄漏到燃烧装置中。

    MMIC folded power amplifier
    10.
    发明授权
    MMIC folded power amplifier 有权
    MMIC折叠功率放大器

    公开(公告)号:US06388528B1

    公开(公告)日:2002-05-14

    申请号:US09961599

    申请日:2001-09-24

    IPC分类号: H03F368

    摘要: A MMIC power amplifier having a smaller die size and higher power output are realized with the improved amplifier and transistor geometry herein provided. In particular, transistors, such as FETs (field effect transistors) are displaced from a conventional FET geometry with alternating FETs being rotated in opposite directions. The inputs (gate pads) and outputs (drain pads) of two adjacent FETs may be “shared.” In a shared input configuration, a compensation network may be coupled to the input. The improved FET configuration reduces the number of splitting and combining networks by up to 50% over the prior art and the die area for a typical 4 watt power amplifier is reduced by 48-72% over the prior art. The improved amplifier configuration provides a multi-sectional configuration wherein one section may be the mirrored image of another. In a two section amplifier, the amplifier appears to be “folded.”

    摘要翻译: 具有较小管芯尺寸和较高功率输出的MMIC功率放大器通过本文提供的改进的放大器和晶体管几何结构来实现。 特别地,诸如FET(场效应晶体管)的晶体管从传统的FET几何形状中移位,交变的FET沿相反方向旋转。 两个相邻FET的输入(栅极焊盘)和输出(漏极焊盘)可以“共享”。 在共享输入配置中,补偿网络可以耦合到输入。 改进的FET配置将分离和组合网络的数量减少了高达现有技术的50%,并且典型的4瓦功率放大器的管芯面积比现有技术减少了48-72%。 改进的放大器配置提供多截面配置,其中一个部分可以是另一部分的镜像。 在两段放大器中,放大器似乎是“折叠的”。