公开(公告)号：AU5300201A

公开(公告)日：2001-10-08

申请号：AU5300201

申请日：2001-03-28

Applicant: HRL LAB LLC

Inventor： SIEVENPIPER DANIEL ,  HARVEY ROBIN J ,  TANGONAN GREG ,  LOO ROBERT Y ,  SCHAFFNER JAMES H

IPC: H01Q15/14 ,  H01H59/00 ,  H01Q3/44 ,  H01Q9/04 ,  H01Q15/00

Abstract: A tuneable impedance surface for steering and/or focusing a radio frequency beam. The tunable surface comprises a ground plane; a first plurality of elements disposed in an array a first distance from the ground plane, the distance being less than a wavelength of the radio frequency beam; and a second plurality of elements disposed in an array a second distance from the ground plane, the second plurality of elements be moveable relative to the first plurality of elements.

公开(公告)号：AU6931700A

公开(公告)日：2001-05-08

申请号：AU6931700

申请日：2000-08-23

Applicant: HRL LAB LLC

Inventor： HSU TSUNG-YUAN ,  LOO ROBERT Y ,  TANGONAN GREG ,  LAM JUAN F

IPC: B81B3/00 ,  H01H1/00 ,  H01H35/00 ,  H01H47/22 ,  H01H47/24 ,  H01H59/00 ,  H01H67/22

Abstract: An optically controlled micro-electromechanical (MEM) switch is described which desirably utilizes photoconductive properties of a semiconductive substrate upon which MEM switches are fabricated. In one embodiment the bias voltage provided for actuation of the switch is altered by illuminating an optoelectric portion of the switch to deactivate the switch. In an alternative embodiment, a photovoltaic device provides voltage to actuate the switch without any bias lines at all. Due to the hysteresis of the electromechanical switching as a function of applied voltage, only modest variation of voltage applied to the switch is necessary to cause the switch to open or close sharply under optical control.

公开(公告)号：DE60041506D1

公开(公告)日：2009-03-19

申请号：DE60041506

申请日：2000-12-22

Applicant: HRL LAB LLC

Inventor： SIEVENPIPER DANIEL ,  HSU HUI-PIN ,  TANGONAN GREG

IPC: H01Q13/08 ,  H01Q21/26 ,  H01Q1/24 ,  H01Q1/28 ,  H01Q1/32 ,  H01Q3/24 ,  H01Q9/40 ,  H01Q13/02 ,  H01Q13/10 ,  H01Q15/00 ,  H01Q21/20 ,  H04B1/40 ,  H04B7/08

Abstract: A directive antenna and method of directing a radio frequency wave received by and/or transmitted from the antenna. The antenna preferably includes a high impedance surface with a plurality of antenna elements disposed on said surface, a plurality of associated demodulators and power sensors and a switch. A Vivaldi Cloverleaf antenna is disclosed.

公开(公告)号：AT422102T

公开(公告)日：2009-02-15

申请号：AT00989424

申请日：2000-12-22

Applicant: HRL LAB LLC

Inventor： SIEVENPIPER DANIEL ,  HSU HUI-PIN ,  TANGONAN GREG

IPC: H01Q13/08 ,  H01Q21/26 ,  H01Q1/24 ,  H01Q1/28 ,  H01Q1/32 ,  H01Q3/24 ,  H01Q9/40 ,  H01Q13/02 ,  H01Q13/10 ,  H01Q15/00 ,  H01Q21/20 ,  H04B1/40 ,  H04B7/08

Abstract: A directive antenna and method of directing a radio frequency wave received by and/or transmitted from the antenna. The antenna preferably includes a high impedance surface with a plurality of antenna elements disposed on said surface, a plurality of associated demodulators and power sensors and a switch. A Vivaldi Cloverleaf antenna is disclosed.