Odd order MESFET frequency multiplier
    1.
    发明授权
    Odd order MESFET frequency multiplier 失效
    奇数MESFET倍频器

    公开(公告)号:US5886595A

    公开(公告)日:1999-03-23

    申请号:US845074

    申请日:1997-04-21

    CPC分类号: H03B19/14

    摘要: An odd order MESFET frequency multiplier which outputs a desired odd harmonic of a fundamental tone. The frequency multiplier includes a multiplier stage with a MESFET having a harmonic response dependent upon a plurality of bias conditions and the input RF power level. The MESFET includes a drain port coupled to an output matching network sized and configured for a predetermined load at a selected output frequency. The output matching network includes RF shorts for reflecting energy to the MESFET from a plurality of undesired even harmonics. Coupled to the output matching circuit is a bandpass filter sized and configured for the predetermined load. The bandpass filter includes RF shorts for reflecting energy to the MESFET from a plurality of undesired odd harmonics, wherein the reflected energy from the undesired even harmonics and the undesired odd harmonics are combined at the MESFET to provide additional energy at the desired odd harmonic.

    摘要翻译: 奇数阶MESFET倍频器,输出基音的期望奇次谐波。 倍频器包括具有取决于多个偏置条件和输入RF功率电平的具有谐波响应的MESFET的乘法器级。 MESFET包括耦合到输出匹配网络的漏极端口,其大小和配置为在所选择的输出频率处的预定负载。 输出匹配网络包括用于从多个不期望的偶次谐波向MESFET反射能量的RF短路。 耦合到输出匹配电路的是带通滤波器,其尺寸和构造用于预定的负载。 带通滤波器包括用于从多个不期望的奇次谐波向MESFET反射能量的RF短路,其中来自不期望的偶次谐波的反射能量和不需要的奇次谐波在MESFET处组合以在期望的奇次谐波处提供额外的能量。

    Suspended transmission line with embedded amplifier
    2.
    发明授权
    Suspended transmission line with embedded amplifier 失效
    具有嵌入式放大器的悬挂传输线

    公开(公告)号:US06518844B1

    公开(公告)日:2003-02-11

    申请号:US09548467

    申请日:2000-04-13

    IPC分类号: H03F360

    摘要: A suspended transmission line with an embedded amplifier includes a support layer and a conductor supported on the support layer between first and second plates each having a ground plane. The conductor includes an input section and an output section. A propagation structure is disposed between the first and second plates to substantially encompass an electric field generated by a signal transmitted on the conductor. An amplifier is coupled to the input and output sections of the conductor and is at least substantially disposed between the first and second plates. The amplifier operates to amplify an input signal received on the input section to generate an output signal on the output section.

    摘要翻译: 具有嵌入式放大器的悬挂传输线包括支撑层和支撑在第一和第二板之间的支撑层上的导体,每个具有接地平面。 导体包括输入部分和输出部分。 传播结构设置在第一和第二板之间,以基本上包围由在导体上传输的信号产生的电场。 放大器耦合到导体的输入和输出部分,并且至少基本上设置在第一和第二板之间。 放大器用于放大在输入部分上接收的输入信号,以在输出部分上产生输出信号。

    Cross slot antenna
    3.
    发明授权
    Cross slot antenna 失效
    十字槽天线

    公开(公告)号:US06507320B2

    公开(公告)日:2003-01-14

    申请号:US09832577

    申请日:2001-04-11

    IPC分类号: H01Q1310

    摘要: A cross slot broad band antenna comprises a five layer configuration including a radiating element cross slot layer having a plurality of radiating slots. Positioned adjacent one side of the radiating element layer is a first spacer layer configured to define a cavity. An S-line feed layer having feeds equal in number to the plurality of radiating slots is positioned adjacent to the first spacer layer. A second spacer layer is positioned adjacent the S-line feed layer and is configured to define a cavity. The fifth layer, a ground plane layer, has a copper clad surface and is positioned adjacent the second spacer layer.

    摘要翻译: 十字槽宽带天线包括五层结构,其包括具有多个辐射槽的辐射元件交叉缝隙层。 位于辐射元件层的相邻一侧的是配置成限定空腔的第一间隔层。 具有与多个辐射槽相同数量的馈送的S线馈电层位于与第一间隔层相邻的位置。 第二间隔层定位成邻近S线进料层并且被配置为限定空腔。 第五层是接地层,具有铜包层表面并且邻近第二间隔层定位。