Patent US5917458A successfully refreshed from Google Patents.
US5917458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency selective surface integrated antenna system
Assignee: United States Department of the Navy
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Filing: 1995-09-08
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Granted: 1999-06-29
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Expires: 2015-09-08
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 15:08
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.
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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 |