US5398037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radomes using chiral materials
Assignee: University of Pennsylvania
•
Filing: 1993-01-21
•
Granted: 1995-03-14
•
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 17:31
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.
References Cited (Backward Citations)
US2049588A
Cited
US2841786A
Cited
US3951904A
Cited
US4333082A
Cited
US4456548A
Cited
US4452727A
Cited
US4616067A
Cited
US4678616A
Cited
US4948922A
Cited
US4948922B1
Cited
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 |