Patent US5398037A successfully refreshed from Google Patents.
US5398037A
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Radomes using chiral materials
Assignee: University of Pennsylvania
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Filing: 1993-01-21
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Granted: 1995-03-14
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Expires: 2013-01-21
Abstract
Abstract Antenna structures and chiral radomes solve the aforementioned long-felt needs and provide efficient and multipolarized antenna structures and radomes. In a preferred embodiment, a radome for covering an antenna comprises a chiral medium. In a further preferred embodiment, a method of manufacturing an antenna structure comprising the step of embedding an antenna element in a radome which further comprises a chiral medium is also provided.
Inventors
- 👤 Nader Engheta
- 👤 Dwight L. Jaggard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:57
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/26; H; H01; H01Q; H01Q1/00; H01Q1/40; H01Q1/42; H01Q15/00; H01Q15/02; H01Q15/12; H01Q17/00; H01Q17/008
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
58 words
An antenna structure comprising: at least one antenna element; a non-chiral dielectric substrate interfaced with the antenna element to hold the at least one antenna in a substantially fixed position in the antenna structure; and a radome further comprising a chiral medium interfaced with the at least one antenna element for covering the at least one antenna element.
Claim 2
Dependent Claim
58 words
An antenna structure comprising: at least one antenna element; a non-chiral dielectric substrate interfaced with the antenna element to hold the at least one antenna in a substantially fixed position in the antenna structure; and a radome further comprising a chiral medium interfaced with the at least one antenna element for covering the at least one antenna element.
Claim 3
Dependent Claim
29 words
The antenna structure recited in claim 1 further comprising a ground plane which comprises a conductor interfaced with the non-chiral dielectric substrate for grounding and holding the antenna structure.
Claim 4
Dependent Claim
19 words
The antenna structure recited in claim 1 wherein the radome comprises a substantially hemispherical finite volume of chiral material.
Claim 5
Dependent Claim
16 words
The antenna structure recited in claim 2 wherein the radome comprises a plurality of chiral layers.
Claim 6
Dependent Claim
46 words
An antenna structure comprising: at least one antenna element; and a radome shell having a finite volume which comprises a chiral medium and a non-chiral portion wherein the at least one antenna element is embedded at least partly in the non-chiral portion of the radome shell.
Claim 7
Dependent Claim
46 words
An antenna structure comprising: at least one antenna element; and a radome shell having a finite volume which comprises a chiral medium and a non-chiral portion wherein the at least one antenna element is embedded at least partly in the non-chiral portion of the radome shell.
Claim 8
Dependent Claim
14 words
The antenna structure recited in claim 5 wherein the radome shell is substantially spherical.
Claim 9
Dependent Claim
14 words
The antenna structure recited in claim 5 wherein the radome shell is substantially hemispherical.
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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) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |