US4110751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Very thin (wrap-around) conformal antenna
Assignee: United States Department of the Army
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Filing: 1977-03-10
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Granted: 1978-08-29
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Expires: 1997-03-10
Abstract
Abstract A new type of thin-walled dielectric loaded antenna which is capable of fh mounting to almost any surface contour. This very thin wrap-around antenna consists essentially of 2 modified cavity-backed slot radiators, spacially positioned 180° apart. Typically, a stripline feed network is used to couple the microwave energy to the individual radiating slots. A plurality of plated through holes define the boundary for the stripline feed network.
Inventors
- 👤 Frank Reggia
- 👤 Howard S. Jones, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:18
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/28; H01Q1/281; H01Q13/00; H01Q13/10; H01Q13/18; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/0421
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
97 words
A thin wrap-around, conformal antenna comprising: a conformal dielectric substrate; conductive plating on the interior surface of the substrate; conductive plating on the exterior surface of the substrate, the plating defining a cavity region for a pair of radiating elements; shorting means for forming the boundaries of the cavity-backed radiating elements placed along the periphery of the elements except for a single cavity radiating region on each element; and a stripline feed network for nonsymmetrically coupling energy to the individual radiating elements at selected points along the radiating region whereby microwave energy may be received or transmitted.
Claim 2
Dependent Claim
97 words
A thin wrap-around, conformal antenna comprising: a conformal dielectric substrate; conductive plating on the interior surface of the substrate; conductive plating on the exterior surface of the substrate, the plating defining a cavity region for a pair of radiating elements; shorting means for forming the boundaries of the cavity-backed radiating elements placed along the periphery of the elements except for a single cavity radiating region on each element; and a stripline feed network for nonsymmetrically coupling energy to the individual radiating elements at selected points along the radiating region whereby microwave energy may be received or transmitted.
Claim 3
Dependent Claim
26 words
The antenna as set forth in claim 1 wherein the cavity-backed radiating elements are rectangular and the radiating region is along one edge of the element.
Claim 4
Dependent Claim
18 words
The antenna as set forth in claim 2 wherein the width of the antenna is approximately 1/4 wavelength.
Claim 5
Dependent Claim
51 words
The antenna as set forth in claim 3 wherein the shorting means comprises: a conductive plating over the entire surface of the substrate excluding a cavity region; and at least one conductive post used to define the boundary of both the stripline feed network and the top center of the cavity.
Claim 6
Dependent Claim
20 words
The antenna as set forth in claim 4 wherein the radiating elements are positioned 180° apart by the inductive post.
Claim 7
Dependent Claim
24 words
The antenna as set forth in claim 4 wherein the radiating elements are fed 180° out-of-phase to produce maximum radiation in the forward direction.
Claim 8
Dependent Claim
21 words
The antenna as set forth in claim 3 wherein the conductive plating and shorting means define four radiating elements linearly aligned.
Claim 9
Dependent Claim
24 words
The antenna as set forth in claim 7 wherein the stripline feed network comprises two separate transmission lines for feeding the four radiating elements.
Claim 10
Dependent Claim
29 words
The antenna as set forth in claim 8 wherein the radiating elements are fed alternately, one transmission line acting as a receiving network, the other as a transmitting network.
Claim 11
Dependent Claim
23 words
The antenna as set forth in claim 3 wherein the conductive plating and shorting means define four radiating elements in a rectangular array.
Claim 12
Dependent Claim
30 words
The antenna as set forth in claim 10 wherein the stripline feed network comprises a balanced transmission emanating from the same feed point and coupling each pair of radiating elements.
Claim 13
Dependent Claim
22 words
The antenna as set forth in claim 3 wherein the radiating region of each element is between one-half and one wavelength long.
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) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |