US3680137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular symmetric bootlace lens system
Assignee: United States Department of the Navy
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Filing: 1970-12-03
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Granted: 1972-07-25
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Expires: 1990-12-03
Abstract
Abstract The Circular Symmetric Bootlace Lens is a system of focusing energy into a well colliminated beam. The system comprises a circular parallel plate lens and a circular array of elements. Energy is launched into the circular parallel plate lens and is collected by elements on the opposite side of the lens and then passes through equal length transmission lines to the circular array of elements where it is radiated.
Inventors
- 👤 Billy D Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:31
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24; H01Q3/242
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
In an omnidirectional rapid scan antenna system, the combination comprising: a circular array of radiating elements, said array having a radius r; a circular lens having a plurality of probes, said lens having a radius R and constructed from dielectric material having a constant index of refraction n, said probes being either energy transmitting probes or energy receiving probes; and equal length electrical connecting means l coupling each of said probes to its respective radiating element whereby any transmitted signal travels through the same distance as another signal transmitted through various receiving probes according to the formula 2nR cos theta + l + R(1-cos 2 theta ) where theta is the angle between the transmitting probe to a receiving probe directly opposite it and the receiving probe.
Claim 2
Dependent Claim
127 words
In an omnidirectional rapid scan antenna system, the combination comprising: a circular array of radiating elements, said array having a radius r; a circular lens having a plurality of probes, said lens having a radius R and constructed from dielectric material having a constant index of refraction n, said probes being either energy transmitting probes or energy receiving probes; and equal length electrical connecting means l coupling each of said probes to its respective radiating element whereby any transmitted signal travels through the same distance as another signal transmitted through various receiving probes according to the formula 2nR cos theta + l + R(1-cos 2 theta ) where theta is the angle between the transmitting probe to a receiving probe directly opposite it and the receiving probe.
Claim 3
Dependent Claim
37 words
An antenna system as recited in claim 1, wherein said radiating elements are equally spaced along said array; wherein said probes are equally spaced along said lens; a source of electrical energy coupled to said transmitting probes.
Claim 4
Dependent Claim
24 words
An antenna system as recited in claim 2 wherein said lens is two spaced, circular conducting plates; and said connecting means comprises transmission lines.
Claim 5
Dependent Claim
21 words
An antenna system as recited in claim 3 wherein said dielectric material is air and said index of refraction is 1.
Claim 6
Dependent Claim
31 words
An antenna system as recited in claim 4 including switches coupled to said probes whereby said probes may be either transmitting or receiving; and wherein said elements are wave guide horns.
Claim 7
Dependent Claim
52 words
An omnidirectional antenna system comprising: at least two circular lenses of radius R each having a constant index of refraction n; a plurality of radiators arranged in a circular array and 3 db hybrid elements between both of said lenses and connected to each radiator by means of equal length transmission lines.
Claim 8
Dependent Claim
52 words
An omnidirectional antenna system comprising: at least two circular lenses of radius R each having a constant index of refraction n; a plurality of radiators arranged in a circular array and 3 db hybrid elements between both of said lenses and connected to each radiator by means of equal length transmission lines.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |