公开(公告)号：GB2394364B

公开(公告)日：2005-06-08

申请号：GB0400098

申请日：2002-07-11

Applicant: HRL LAB LLC

Inventor： SIEVENPIPER DANIEL F ,  HSU HUI-PIN ,  SHAFFNER JAMES H ,  TANGONAN GREGORY L

IPC: H01Q9/44 ,  H01Q13/08 ,  H01Q15/00 ,  H01Q21/24 ,  H01Q21/26

Abstract: An antenna system for receiving both circularly polarized electromagnetic signals and linearly polarized electromagnetic signals, the circularly polarize signals arriving at the antenna system from a direction normal or oblique to a major surface of the antenna system and the linearly polarized signals arriving at the planar antenna system from a direction acute to said major surface. The antenna system includes a high impedance surface and a plurality of antenna elements disposed on said high impedance surface, the plurality antenna elements arranged in a pattern on said surface such first selected ones of said antenna elements are responsive to circular polarization and second selected ones of said antenna elements are responsive to linear polarization.

公开(公告)号：AU770969B2

公开(公告)日：2004-03-11

申请号：AU7884300

申请日：2000-08-21

Applicant: HRL LAB LLC

Inventor： HSU HUI-PIN ,  SCHAFFNER JAMES H

IPC: H04J1/02 ,  H04B7/26 ,  H04J1/12 ,  H04L1/00 ,  H04M11/00 ,  H04Q7/36 ,  H04B1/74 ,  H04L1/20 ,  H04L1/24

公开(公告)号：GB2394364A

公开(公告)日：2004-04-21

申请号：GB0400098

申请日：2002-07-11

Applicant: HRL LAB LLC

Inventor： SIEVENPIPER DANIEL F ,  HSU HUI-PIN ,  SHAFFNER JAMES H ,  TANGONAN GREGORY L

IPC: H01Q9/44 ,  H01Q13/08 ,  H01Q15/00 ,  H01Q21/24 ,  H01Q21/26

Abstract: An antenna system for receiving both circularly polarized electromagnetic signals and linearly polarized electromagnetic signals, the circularly polarize signals arriving at the antenna system from a direction normal or oblique to a major surface of the antenna system and the linearly polarized signals arriving at the planar antenna system from a direction acute to said major surface. The antenna system includes a high impedance surface and a plurality of antenna elements disposed on said high impedance surface, the plurality antenna elements arranged in a pattern on said surface such first selected ones of said antenna elements are responsive to circular polarization and second selected ones of said antenna elements are responsive to linear polarization.

公开(公告)号：GB2391711A

公开(公告)日：2004-02-11

申请号：GB0323587

申请日：2002-03-29

Applicant: HRL LAB LLC

Inventor： HSU HUI-PIN ,  HSU TSUNG-YUAN

IPC: H01H59/00 ,  H01Q1/38 ,  H01Q3/24 ,  H01Q5/00 ,  H01Q9/28 ,  H01Q21/06 ,  H01Q3/00 ,  H01Q9/14 ,  H01Q13/10

Abstract: A method and apparatus for reconfiguring an antenna array by optical control of MEMSswitches. A light source is provided to direct light to individual optically sensitive elementswhich control delivery of actuating bias voltage to the MEMS switches. The light source is preferably separated from the antenna array by a structure which conducts the controllingillumination but provides a high impedance electromagnetically reflective surface which reflectselectromagnetic radiation over the antenna operating frequency range with small phase shift, and which is disposed very close to the antenna array. Optically sensitive elements preferablyinclude photoresistive elements, which are best formed in the substrate upon which the MEMS switches are formed, and may include photovoltaic elements.