Patent US3754268A successfully refreshed from Google Patents.
US3754268A
Expired / Lapsed
US
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Submarine-to-satellite communications antenna
Assignee: United States Department of the Navy
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Filing: 1972-09-08
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Granted: 1973-08-21
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Expires: 1992-09-08
Abstract
Abstract A phased-array antenna system for an SHF communications link between submarines and earth-orbiting satellites. The compact antenna system is mounted in the head of a submarine periscope and provides increased data rate, low-sidelobes, variable beam control, multiple-beam capability, and circular polarization. RF energy to be transmitted is conducted from transmitting means in the submarine through a waveguide run the length of the periscope to the antenna system which includes a high-power switch to commute the energy to a four-port hybrid matrix. The matrix feeds selectively predetermined phase progressions of the energy to the radiating array which comprises a plurality of probe-fed, cavity elements.
Inventors
- 👤 J Boyns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:31
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/24; H01Q1/00; H01Q1/27; H01Q1/34; H01Q1/42; H01Q13/00; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
A periscope mounted phased-array antenna system for use in submarine-to-satellite communication systems and comprising: a general-purpose, submarine periscope, said periscope having a head portion with an aperture on one side and near the top thereof; RF energy radiating aperture means mounted and rigidly supported in said aperture whereby said means can radiate energy into the atmosphere; energy feed means mounted and rigidly supported inside said periscope head and being electrically connected to said radiating aperture means; transmitter means located inside said submarine; and waveguide means connected between said transmitter means and said energy feed means to conduct RF energy to Said radiating aperture means.
Claim 2
Dependent Claim
104 words
A periscope mounted phased-array antenna system for use in submarine-to-satellite communication systems and comprising: a general-purpose, submarine periscope, said periscope having a head portion with an aperture on one side and near the top thereof; RF energy radiating aperture means mounted and rigidly supported in said aperture whereby said means can radiate energy into the atmosphere; energy feed means mounted and rigidly supported inside said periscope head and being electrically connected to said radiating aperture means; transmitter means located inside said submarine; and waveguide means connected between said transmitter means and said energy feed means to conduct RF energy to Said radiating aperture means.
Claim 3
Dependent Claim
46 words
The system of claim 1 wherein said radiating aperture means comprises a rectangular-shaped, electric radome mounted substantially flush with respect to the exterior of said aperture, and further including a rectangular-shaped array of probe-fed, cavity elements mounted behind said radome and substantially inside said periscope head.
Claim 4
Dependent Claim
32 words
The system of claim 2 wherein said energy feed means comprises a four-port hybrid matrix mounted behind said array of probe-fed cavity elements to energize selectively predetermined ones of said cavity elements.
Claim 5
Dependent Claim
14 words
The system of claim 2 wherein said energy feed means comprises a Butler matrix.
References Cited (Backward Citations)
US3495261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |