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    Monolithic switch
    21.
    发明专利
    Monolithic switch 未知

    公开(公告)号：GB2393850A

    公开(公告)日：2004-04-07

    申请号：GB0316746

    申请日：2002-01-11

    Applicant: HRL LAB LLC

    Inventor： LOO ROBERT Y ,  SCHAFFNER JAMES H ,  SCHMITZ ADELE E ,  HSU TSUNG-YUAN ,  DOLEZAL FRANKLIN A ,  TANGONAN GREGORY L

    IPC: H01H59/00 ,  B81B3/00

    Abstract: Apparatus for a micro-electro-mechanical switch that provides single pole, double throw switching action. The switch comprises a single RF input line and two RF output lines. The switch additionally comprises two armatures, each mechanically connected to a substrate at one end and having a conducting transmission line at the other end with a suspended biasing electrode located on top of or within a structural layer of the armature. Each conducting transmission line has conducting dimples that protrude beyond the bottom of the armature carrying the conducting transmission line. Closure of an armature causes the dimples of the corresponding conducting transmission line to mechanically and electrically engage the RF input line and the corresponding RF output line, thus directing RF energy from the RF input line to the selected RF output line.

    A textured surface having high electromagnetic impedance in multiple frequency bands
    22.
    发明专利
    A textured surface having high electromagnetic impedance in multiple frequency bands 未知

    公开(公告)号：GB2385994A

    公开(公告)日：2003-09-03

    申请号：GB0310485

    申请日：2001-10-04

    Applicant: HRL LAB LLC

    Inventor： SCHAFFNER JAMES H ,  SIEVENPIPER DANIEL

    IPC: H01Q15/14 ,  H01Q1/38 ,  H01Q1/48 ,  H01Q15/00

    Abstract: A high impedance surface having a reflection phase of zero in multiple frequency bands and a method of making same. The high impedance surface includes a ground plane; a plurality of conductive plates disposed in a first array spaced a distance from the ground plane, thedistance being less than a wavelength of the radio frequency beam, said first array having a first lattice constant; and a plurality of conductive elements associated with said plurality of conductive plates, said plurality of conductive elements defining a second array, said second array having a lattice constant greater than the lattice constant of the first array.

    A low cost packaging technique for reconfigurable antenna arr ay
    26.
    发明专利
    A low cost packaging technique for reconfigurable antenna arr ay 未知

    公开(公告)号：GB2394362A

    公开(公告)日：2004-04-21

    申请号：GB0400095

    申请日：2002-07-11

    Applicant: HRL LAB LLC

    Inventor： SIEVENPIPER DANIEL ,  SCHMITZ ADELE E ,  SCHAFFNER JAMES H ,  TANGONAN GREGORY L ,  HSU TSUNG-YUAN ,  LOO ROBERT Y ,  MILES ROBERT S

    IPC: H01P1/12 ,  H01P11/00 ,  H01Q1/38 ,  H01Q15/00 ,  H01Q21/06

    Abstract: A flexible antenna array comprises a plurality of layers of thin metal and a flexible insulating medium arranged as a sandwich of layers. Each layer of the sandwich is patterned as needed to define: (i) antenna segments patterned in one of the metal layers, (ii) an array of metallic top elements formed in a layer spaced from the antenna segments, the array metallic top elements, being patterned in another metal layer, (iii) a metallic ground plane formed in a layer spaced from the array of metallic top elements, the metallic ground plane having been formed from still another metal layer, and (iv) inductive elements coupling each of the top elements in the array of metallic top elements with said ground plan. An array of remotely controlled switches are provided for coupling selected ones of said antenna segments together.

    An antenna system and rf signal interference/jamming abatement in a terrestrial gps apparatus and method
    27.
    发明专利
    An antenna system and rf signal interference/jamming abatement in a terrestrial gps apparatus and method 未知

    公开(公告)号：AU2002323458A1

    公开(公告)日：2003-03-18

    申请号：AU2002323458

    申请日：2002-08-27

    Applicant: HRL LAB LLC

    Inventor： LYNCH JONATHAN J ,  SCHAFFNER JAMES H ,  SIEVENPIPER DANIEL F

    IPC: G01S1/00 ,  G01S5/00 ,  G01S19/44 ,  H01Q3/26 ,  H01Q5/00 ,  H01Q5/45 ,  H01Q9/04 ,  H01Q19/06 ,  H01Q21/00 ,  G01S1/02 ,  G01S5/14

    Abstract: Disclosed is an antenna system including a Luneberg Lens having a spherically shaped outer surface and a spherically shaped focal surface spaced from its outer surface with a plurality of patch antenna elements disposed along the focal surface of the Luneberg Lens; and a power combiner for combining signals received by said plurality of patch antenna elements. The disclosed antenna system may be used a part of a robust GPS system having a plurality of GPS satellites each transmitting a GPS signal; a plurality of airborne GPS platforms, each GPS platform including a GPS transmitter for transmitting its own GPS signal, the GPS signals being transmitted from the plurality of airborne GPS platforms being differentiated from the GPS signals transmitted by visible GPS satellites; and at least one terrestrially located GPS receiver for receiving the GPS signals transmitted by visible ones of the GPS satellites and by visible ones of said airborne GPS platforms.

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