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US5917458A Expired / Lapsed US ⏱️ 0.0 years remaining

Frequency selective surface integrated antenna system

Assignee: United States Department of the Navy
•
Filing: 1995-09-08
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Granted: 1999-06-29
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Expires: 2015-09-08
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Abstract

Abstract A frequency selective surface integrated antenna is provided which compri a frequency selective surface, including an electrically non-conductive substrate and an electrically conductive layer, mounted to the substrate and having a pattern of apertures; and an antenna integrated in the frequency selective surface.

Inventors

  • 👤 Thinh Q. Ho
  • 👤 James C. Logan
  • 👤 John W. Rockway

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 14:54
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/0006; H01Q15/0013; H01Q1/00; H01Q1/40; H01Q1/405; H01Q1/42; H01Q1/425; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/16; H01Q9/28; H01Q9/285

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 111 words
A frequency selective surface integrated antenna, comprising: a radio frequency selective surface including an electrically non-conductive substrate, and an electrically conductive layer mounted to said substrate and having a pattern of apertures; a first slotline formed in said electrically conductive layer which divides said electrically conductive layer into a ground plane region and a first resonator region electrically isolated from said ground plane region; and a second slotline formed in said electrically conductive layer which defines a second resonator region electrically isolated from said ground plane region wherein said first and second resonator regions, and said ground plane region define a radio frequency bow-tie antenna integrated in said frequency selective surface.
Claim 2
Dependent Claim 111 words
A frequency selective surface integrated antenna, comprising: a radio frequency selective surface including an electrically non-conductive substrate, and an electrically conductive layer mounted to said substrate and having a pattern of apertures; a first slotline formed in said electrically conductive layer which divides said electrically conductive layer into a ground plane region and a first resonator region electrically isolated from said ground plane region; and a second slotline formed in said electrically conductive layer which defines a second resonator region electrically isolated from said ground plane region wherein said first and second resonator regions, and said ground plane region define a radio frequency bow-tie antenna integrated in said frequency selective surface.
Claim 3
Dependent Claim 111 words
A frequency selective surface integrated antenna, comprising: a radio frequency selective surface including an electrically non-conductive substrate, and an electrically conductive layer mounted to said substrate and having a pattern of apertures; a first slotline formed in said electrically conductive layer which divides said electrically conductive layer into said ground plane region and a first resonator region electrically isolated from said ground plane region; and a second slotline formed in said electrically conductive layer which defines a second resonator region electrically isolated from said ground plane region wherein said first and second resonator regions, and said ground plane region define a radio frequency dipole antenna integrated in said frequency selective surface.
Claim 4
Dependent Claim 111 words
A frequency selective surface integrated antenna, comprising: a radio frequency selective surface including an electrically non-conductive substrate, and an electrically conductive layer mounted to said substrate and having a pattern of apertures; a first slotline formed in said electrically conductive layer which divides said electrically conductive layer into said ground plane region and a first resonator region electrically isolated from said ground plane region; and a second slotline formed in said electrically conductive layer which defines a second resonator region electrically isolated from said ground plane region wherein said first and second resonator regions, and said ground plane region define a radio frequency dipole antenna integrated in said frequency selective surface.
Claim 5
Dependent Claim 114 words
A frequency selective surface integrated antenna, comprising: an electrically non-conductive substrate having first and second opposed surfaces; a first electrically conductive layer having a first pattern of apertures and mounted to said first opposed surface; a second electrically conductive layer having a second pattern of apertures and mounted to said second opposed surface, said second electrically conductive layer being electrically isolated from said first electrically conductive layer; and a first slotline formed in said first electrically conductive layer which divides said first electrically conductive layer into a ground plane region and a resonator region electrically isolated from said ground plane region to define a radio frequency antenna integrated in said first electrically conductive layer.
Claim 6
Dependent Claim 114 words
A frequency selective surface integrated antenna, comprising: an electrically non-conductive substrate having first and second opposed surfaces; a first electrically conductive layer having a first pattern of apertures and mounted to said first opposed surface; a second electrically conductive layer having a second pattern of apertures and mounted to said second opposed surface, said second electrically conductive layer being electrically isolated from said first electrically conductive layer; and a first slotline formed in said first electrically conductive layer which divides said first electrically conductive layer into a ground plane region and a resonator region electrically isolated from said ground plane region to define a radio frequency antenna integrated in said first electrically conductive layer.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2002-06-28 2002-12-28 2003-06-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2006-06-28 2006-12-28 2007-06-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2010-06-28 2010-12-28 2011-06-29 $7700.00 Window Closed / Lapsed

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