US6098547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artillery fuse circumferential slot antenna for positioning and telemetry
Assignee: Rockwell Collins Inc
•
Filing: 1998-06-01
•
Granted: 2000-08-08
•
Expires: 2018-06-01
Abstract
Abstract An antenna for utilization in a fuse of an artillery shell or the like. The antenna includes a dielectric disk having upper and lower surfaces, a radiator disposed on the upper surface of the dielectric disk, a ground plane disposed on the lower surface of said dielectric disk, and a plurality of spaced apart apertures radially disposed through the dielectric disk for coupling the radiator to the ground plane.
Inventors
- 👤 James B. West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:36
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; F; F42; F42B; F42B30/00; F42B30/006; F42C; F42C13/00; F42C13/04; H01Q13/00; H01Q13/10; H01Q13/12; H01Q21/00; H01Q21/29
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
186 words
An antenna, comprising: a dielectric disk having upper and lower surfaces; a first ground plane disposed on the upper surface of said dielectric disk; a second ground plane disposed on the lower surface of said dielectric disk; and a plurality of apertures being spaced apart and radially disposed through said dielectric disk for coupling said first and second ground planes, said first and second ground planes each having a predetermined diameter wherein said plurality of apertures are selected according to the predetermined diameters of said first and second ground planes to provide a desired radiation property of the antenna such that the antenna is capable of being optimized for utilization in a projectile, the desired radiation property including a lower gain in a forward direction with respect to a direction of flight of the projectile, and a higher gain in an aft direction with respect to the direction of flight of the projectile, the desired radiation property being generated at least in part by current conducted by either one of said first and second ground planes being caused to flow on a surface of the projectile.
Claim 2
Dependent Claim
186 words
An antenna, comprising: a dielectric disk having upper and lower surfaces; a first ground plane disposed on the upper surface of said dielectric disk; a second ground plane disposed on the lower surface of said dielectric disk; and a plurality of apertures being spaced apart and radially disposed through said dielectric disk for coupling said first and second ground planes, said first and second ground planes each having a predetermined diameter wherein said plurality of apertures are selected according to the predetermined diameters of said first and second ground planes to provide a desired radiation property of the antenna such that the antenna is capable of being optimized for utilization in a projectile, the desired radiation property including a lower gain in a forward direction with respect to a direction of flight of the projectile, and a higher gain in an aft direction with respect to the direction of flight of the projectile, the desired radiation property being generated at least in part by current conducted by either one of said first and second ground planes being caused to flow on a surface of the projectile.
Claim 3
Dependent Claim
23 words
An antenna as claimed in claim 1, said dielectric disk having a diameter and a dielectric constant selected for operation at L-band frequencies.
Claim 4
Dependent Claim
23 words
An antenna as claimed in claim 1, said dielectric disk having a diameter and a dielectric constant selected for operation at S-band frequencies.
Claim 5
Dependent Claim
26 words
An antenna as claimed in claim 1, said dielectric disk having a diameter and a dielectric constant selected for operation at both L-band and S-band frequencies.
Claim 6
Dependent Claim
28 words
An antenna as claimed in claim 1, said plurality of apertures being of a number and having a diameter and spacing relationship selected for operation at L-band frequencies.
Claim 7
Dependent Claim
28 words
An antenna as claimed in claim 1, said plurality of apertures being of a number and having a diameter and spacing relationship selected for operation at S-band frequencies.
Claim 8
Dependent Claim
31 words
An antenna as claimed in claim 1, said plurality of apertures being of a number and having a diameter and spacing relationship selected for operation at both L-band and S-band frequencies.
Claim 9
Dependent Claim
13 words
An antenna as claimed in claim 1, wherein the antenna is centrally fed.
Claim 10
Dependent Claim
17 words
An antenna as claimed in claim 1, wherein the antenna has an impedance of approximately 50 ohms.
Claim 11
Dependent Claim
29 words
An antenna as claimed in claim 1, each one of the predetermined diameters of said first and second ground planes being equal to a respective diameter of the projectile.
Claim 12
Dependent Claim
28 words
An antenna as claimed in claim 1, said first and second ground planes of the antenna being coupled with first and second exterior surfaces, respectively, of the projectile.
Claim 13
Dependent Claim
50 words
An antenna as claimed in claim 1, said first and said second ground planes of the antenna each having a respective diameter such that a diameter of one of said first and second ground planes is greater than another diameter of another one of said first and second ground planes.
Claim 14
Dependent Claim
164 words
A fuse, comprising: an outer shell having an interior portion and a base; and an antenna disposed within the interior portion of said outer shell generally parallel to said base, said antenna comprising a dielectric disk having upper and lower surfaces, a first ground plane disposed on the upper surface of said dielectric disk, a second ground plane disposed on the lower surface of said dielectric disk, and a plurality of apertures being spaced apart and radially disposed through said dielectric disk for coupling said first and second ground planes, said antenna providing a desired radiation property including a lower gain in a forward direction with respect to a longitudinal axis of the fuse, and a higher gain in an aft direction with respect to the longitudinal axis of the fuse, the desired radiation property being generated at least in part by current conducted by either one of said first and second ground planes being caused to flow on a surface of the fuse.
Claim 15
Dependent Claim
164 words
A fuse, comprising: an outer shell having an interior portion and a base; and an antenna disposed within the interior portion of said outer shell generally parallel to said base, said antenna comprising a dielectric disk having upper and lower surfaces, a first ground plane disposed on the upper surface of said dielectric disk, a second ground plane disposed on the lower surface of said dielectric disk, and a plurality of apertures being spaced apart and radially disposed through said dielectric disk for coupling said first and second ground planes, said antenna providing a desired radiation property including a lower gain in a forward direction with respect to a longitudinal axis of the fuse, and a higher gain in an aft direction with respect to the longitudinal axis of the fuse, the desired radiation property being generated at least in part by current conducted by either one of said first and second ground planes being caused to flow on a surface of the fuse.
Claim 16
Dependent Claim
29 words
A fuse as claimed in claim 13, said outer shell having a conical contour and said antenna being shaped to conform to the conical contour of said outer shell.
Claim 17
Dependent Claim
29 words
A fuse as claimed in claim 13, said outer shell having an ogival contour and said antenna being shaped to conform to the ogival contour of said outer shell.
Claim 18
Dependent Claim
39 words
A fuse as claimed in claim 13, said outer shell being conductive and said first and second ground planes being coupled to said outer shell such that grounding effectiveness of said first and second ground planes is thereby enhanced.
Claim 19
Dependent Claim
23 words
A fuse as claimed in claim 13, said dielectric disk having a diameter and a dielectric constant selected for operation at L-band frequencies.
Claim 20
Dependent Claim
23 words
A fuse as claimed in claim 13, said dielectric disk having a diameter and a dielectric constant selected for operation at S-band frequencies.
Claim 21
Dependent Claim
26 words
A fuse as claimed in claim 13, said dielectric disk having a diameter and a dielectric constant selected for operation at both L-band and S-band frequencies.
Claim 22
Dependent Claim
28 words
A fuse as claimed in claim 13, said plurality of apertures being of a number and having a diameter and spacing relationship selected for operation at L-band frequencies.
Claim 23
Dependent Claim
28 words
A fuse as claimed in claim 13, said plurality of apertures being of a number and having a diameter and spacing relationship selected for operation at S-band frequencies.
Claim 24
Dependent Claim
31 words
A fuse as claimed in claim 13, said plurality of apertures being of a number and having a diameter and spacing relationship selected for operation at both L-band and S-band frequencies.
Claim 25
Dependent Claim
13 words
A antenna as claimed in claim 13, wherein the antenna is centrally fed.
Claim 26
Dependent Claim
30 words
A fuse as claimed in claim 13, each one of the predetermined diameters of said first and second ground planes being equal to a respective diameter of said outer shell.
Claim 27
Dependent Claim
29 words
A fuse as claimed in claim 13, said first and second ground planes of said antenna being coupled with first and second exterior surfaces, respectively, of said outer shell.
Claim 28
Dependent Claim
50 words
A fuse as claimed in claim 13, said first and said second ground planes of said antenna each having a respective diameter such that a diameter of one of said first and second ground planes is greater than another diameter of another one of said first and second ground planes.
References Cited (Backward Citations)
US3732564A
Cited
US2996713A
Cited
US4245222A
Cited
US4457206A
Cited
US4280355A
Cited
US4431996A
Cited
US4697189A
Cited
US4726291A
Cited
US4994820A
Cited
EP0444416A1
Cited
US5041838A
Cited
US5131602A
Cited
US5202697A
Cited
US5192827A
Cited
US5379968A
Cited
US5425514A
Cited
US5706015A
Cited
US5864318A
Cited
EP0809084A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-08 | 2004-02-07 | 2004-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-08 | 2008-02-07 | 2008-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-08 | 2012-02-07 | 2012-08-08 | $7700.00 | Window Closed / Lapsed |