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    High quality-factor resonator
    1.
    发明授权
    High quality-factor resonator 有权
    高质量因子谐振器

    公开(公告)号：US08922301B1

    公开(公告)日：2014-12-30

    申请号：US13283138

    申请日：2011-10-27

    Applicant: John D. Williams ,  Reza Kamali-Sarvestani

    Inventor： John D. Williams ,  Reza Kamali-Sarvestani

    IPC: H03H7/01

    CPC classification number: H03H7/175 ,  H05K1/16 ,  H05K1/162 ,  H05K1/165

    Abstract: A high-Q factor resonator comprises a solenoid having an embedded capacitor assembled in a machineable high-frequency dielectric printed circuit board (“PCB”), or other substrate. The solenoid comprises a plurality of surface conductors positioned on upper and lower surfaces of the PCB. The solenoid further comprises a plurality of conductive vias extending through the PCB between the surface conductors, and at least two aligned vias are separated by a capacitive gap. The device can therefore be described as a coupled circuit having a 1.5 or more turn inductor with an embedded capacitor along the length of the conductive path. Accordingly, a resonator having a high-Q factor is provided which is relatively inexpensive and easy to fabricate.

    Abstract translation: 高Q因子谐振器包括具有组装在可加工的高频电介质印刷电路板（“PCB”）或其它基板中的嵌入式电容器的螺线管。 螺线管包括位于PCB的上表面和下表面上的多个表面导体。 螺线管还包括在表面导体之间延伸穿过PCB的多个导电通孔，并且至少两个对准的通孔被电容间隙分开。 因此，该装置可以被描述为具有沿着导电路径的长度的具有嵌入式电容器的1.5或更多转向电感器的耦合电路。 因此，提供了具有高Q因子的谐振器，其相对便宜并且易于制造。

    Ion thruster with long-lifetime ion-optics system
    4.
    发明授权
    Ion thruster with long-lifetime ion-optics system 失效
    离子推进器具有长寿命离子光学系统

    公开(公告)号：US5924277A

    公开(公告)日：1999-07-20

    申请号：US767920

    申请日：1996-12-17

    Applicant: John R. Beattie ,  John D. Williams ,  Jesse N. Matossian

    Inventor： John R. Beattie ,  John D. Williams ,  Jesse N. Matossian

    IPC: B64G1/24 ,  F03H1/00 ,  H05H1/00

    CPC classification number: F03H1/0043

    Abstract: Ion erosion of grids is reduced in an ion thruster with a multiple-grid ion-optics system. The thruster has an array of aperture sets in which aperture areas change in a perimeter region of the array. In one ion-optics system embodiment, a screen aperture area is reduced and a decelerator aperture area is increased in aperture sets that are proximate to the perimeter of the array. Prototype tests of this embodiment have illustrated significant reduction of ion erosion.

    Abstract translation: 使用多栅离子光学系统的离子推进器减小了栅格的离子侵蚀。 推进器具有一组孔径组，其中孔径区域在阵列的周边区域中变化。 在一个离子光学系统实施例中，屏幕孔径面积减小，并且靠近阵列周边的孔径组中的减速器孔径面积增加。 该实施例的原型测试表明离子侵蚀显着减少。

    Terahertz metamaterials
    9.
    发明授权
    Terahertz metamaterials 有权
    太赫兹超材料

    公开(公告)号：US08803637B1

    公开(公告)日：2014-08-12

    申请号：US12262422

    申请日：2008-10-31

    Applicant: Xomalin Guaiuli Peralta ,  Igal Brener ,  John O'Hara ,  Abul Azad ,  Evgenya Smirnova ,  John D. Williams ,  Richard D. Averitt

    Inventor： Xomalin Guaiuli Peralta ,  Igal Brener ,  John O'Hara ,  Abul Azad ,  Evgenya Smirnova ,  John D. Williams ,  Richard D. Averitt

    IPC: H01P7/10 ,  H01P7/08

    CPC classification number: H01P7/082 ,  H01P7/10 ,  H01Q15/0086 ,  H05K1/0236 ,  H05K1/024 ,  H05K1/0393 ,  H05K1/165 ,  H05K3/007 ,  H05K2201/015 ,  H05K2201/0154

    Abstract: Terahertz metamaterials comprise a periodic array of resonator elements disposed on a dielectric substrate or thin membrane, wherein the resonator elements have a structure that provides a tunable magnetic permeability or a tunable electric permittivity for incident electromagnetic radiation at a frequency greater than about 100 GHz and the periodic array has a lattice constant that is smaller than the wavelength of the incident electromagnetic radiation. Microfabricated metamaterials exhibit lower losses and can be assembled into three-dimensional structures that enable full coupling of incident electromagnetic terahertz radiation in two or three orthogonal directions. Furthermore, polarization sensitive and insensitive metamaterials at terahertz frequencies can enable new devices and applications.

    Abstract translation: 太赫兹超材料包括布置在电介质基底或薄膜上的谐振器元件的周期性阵列，其中谐振器元件具有为频率大于约100GHz的入射电磁辐射提供可调磁导率或可调谐电容率的结构， 周期性阵列具有小于入射电磁辐射的波长的晶格常数。 微制造的超材料表现出较低的损耗，并且可以组装成能够在两个或三个正交方向上完全耦合入射电磁太赫兹辐射的三维结构。 此外，极化敏感和不敏感的超材料在太赫兹频率可以实现新的设备和应用。

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