Patent US5453754A successfully refreshed from Google Patents.
US5453754A
Expired / Lapsed
US
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Dielectric resonator antenna with wide bandwidth
Assignee: Qinetiq Ltd
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Filing: 1993-09-08
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Granted: 1995-09-26
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Expires: 2013-09-08
Abstract
Abstract The invention relates to a dielectric resonator antenna system which exhibits an unusually wide bandwidth. This is achieved by chosing a patch antenna/dielectric resonator combination with shape and dimensions such that resonance modes over a continuous range wavelengths can be established therein. The bandwidth and transmission properties of the device are further improved by including a dielectric coupling element (between the dielectric resonator and air) whose antireflection characteristics are optimized for a wavelength which is slightly different from the maximum wavelength of the patch antenna.
Inventors
- 👤 Adrian F. Fray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:14
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/06; H01Q19/09; H01Q9/00; H01Q9/04; H01Q9/0485
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
120 words
A dielectric resonator antenna system comprising: a dielectric substrate sheet having opposite first and second surfaces; a patch of electrically conducting material having a center frequency formed on said first surface, the patch having a length that varies across the width of the patch; a ground plane formed on said second surface; means for feeding signals to and from the patch; and a dielectric resonating element, adjacent to said first surface and said patch, said resonating element having a dielectric constant, a thickness and a size, wherein said dielectric constant, said thickness and said size of said dielectric resonating element comprises a means for resonating at frequencies including said center frequency, said substrate, patch and resonating element comprising a stack.
Claim 2
Dependent Claim
120 words
A dielectric resonator antenna system comprising: a dielectric substrate sheet having opposite first and second surfaces; a patch of electrically conducting material having a center frequency formed on said first surface, the patch having a length that varies across the width of the patch; a ground plane formed on said second surface; means for feeding signals to and from the patch; and a dielectric resonating element, adjacent to said first surface and said patch, said resonating element having a dielectric constant, a thickness and a size, wherein said dielectric constant, said thickness and said size of said dielectric resonating element comprises a means for resonating at frequencies including said center frequency, said substrate, patch and resonating element comprising a stack.
Claim 3
Dependent Claim
23 words
The dielectric resonator antenna system of claim 1 where the patch is square and fed to and from a corner of said patch.
Claim 4
Dependent Claim
23 words
The dielectric resonator antenna system of claim 1 with the addition of a second means for feeding signals to and from the patch.
Claim 5
Dependent Claim
23 words
The dielectric resonator antenna system of claim 1 where the means for feeding signals to and from the patch comprises a coaxial cable.
Claim 6
Dependent Claim
29 words
The dielectric resonator antenna system of claim 1 further including a dielectric matching element having a thickness different from one quarter of the maximum operating wavelength of the patch.
Claim 7
Dependent Claim
32 words
The dielectric resonator antenna system of claim 1 wherein said dielectric substrate sheet, said patch, said ground plane and said means for feeding are enclosed in an open-ended metal cavity having walls.
Claim 8
Dependent Claim
27 words
The dielectric resonator antenna system of claim 6 where an air gap is included between the dielectric resonating element and at least one of the cavity walls.
Claim 9
Dependent Claim
20 words
An array of antenna systems, each of said systems comprising a dielectric resonator antenna system as claimed in claim 1.
Claim 10
Dependent Claim
27 words
The dielectric resonator antenna system of claim 1 wherein said dielectric resonating element has a thickness of approximately one quarter of the wavelength of said center frequency.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |