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US4051480A
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Conformal edge-slot radiators
Assignee: United States Department of the Army
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Filing: 1976-10-27
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Granted: 1977-09-27
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Expires: 1996-10-27
Abstract
Abstract A dielectric loaded edge-slot radiator whose exterior dimensions are adjuble to allow flush mounting on cylindrical and conical bodies which can be frequency tuned either electrically or mechanically. This is done by varying the number of inductive posts which are used as boundaries for the individual elements making up the antenna. A single inductive probe whose characteristic impedance is matched to the rf source is coupled so as to simultaneously excite all of the radiating elements in phase. The radiation field produced in a plane containing the radiator is nearly of constant amplitude.
Inventors
- 👤 Frank Reggia
- 👤 Howard S. Jones, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:16
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q13/106; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; H01Q1/286
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
88 words
A dielectric loaded edge-slot radiator whose exterior dimensions can be chosen to allow flush-mounting on cylindrical and conical bodies comprising: a dielectric substrate having a plurality of holes uniformly positioned in radial lines over the substrate; a conductive plating disposed on the surfaces of the substrate acting as radiating elements; a coupling means for exciting the radiating elements, and a plurality of inductive shorting posts conformal to the holes in the substrate, whereby the edge-slot radiator can be frequency tuned without changing the physical dimensions of the antenna.
Claim 2
Dependent Claim
88 words
A dielectric loaded edge-slot radiator whose exterior dimensions can be chosen to allow flush-mounting on cylindrical and conical bodies comprising: a dielectric substrate having a plurality of holes uniformly positioned in radial lines over the substrate; a conductive plating disposed on the surfaces of the substrate acting as radiating elements; a coupling means for exciting the radiating elements, and a plurality of inductive shorting posts conformal to the holes in the substrate, whereby the edge-slot radiator can be frequency tuned without changing the physical dimensions of the antenna.
Claim 3
Dependent Claim
31 words
The radiator as set forth in claim 1 wherein the dielectric substrate has its holes aligned such that they act as a boundary for individual elements making up the edge-slot radiator.
Claim 4
Dependent Claim
43 words
The radiator as set forth in claim 1 wherein the coupling means comprises a single inductive probe matched to the characteristic impedance of the rf source and is positioned at the propagation center of the edge-slot radiator to excite all the elements in-phase.
Claim 5
Dependent Claim
19 words
The radiator as set forth in claim 3 wherein the substrate and plating are in form of a disc.
Claim 6
Dependent Claim
16 words
The radiator as set forth in claim 3 wherein the substrate and plating are conically shaped.
Claim 7
Dependent Claim
17 words
The radiator as set forth in claim 3 wherein the substrate is of a teflon fiberglass material.
Claim 8
Dependent Claim
16 words
The radiator as set forth in claim 6 wherein the teflon fiberglass material is copper cladded.
Claim 9
Dependent Claim
18 words
The radiator as set forth in claim 3 wherein the thickness of the substrate is approximately 1/8 inch.
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) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |