US3355738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave antenna having a controlled phase distribution
Assignee: North American Aviation Corp
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Filing: 1964-11-09
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Granted: 1967-11-28
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Jerry A Algeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:16
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4409; H01Q25/00; H01Q25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A MONOPULSE RECEIVING ANTENNA FOR PRODUCING FIRST AND SECOND MONOPULSE MICROWAVE SIGNALS IN RESPONSE TO RECEIVED MICROWAVE SIGNALS OF A SELECTED CARRIER FREQUENCY, MEANS FOR PROVIDING A SELECTED APERTURE PHASE DISTRIBUTION IN SAID MONOPULSE RECEIVING ANTENNA COMPRISING A CONTINUOUS CURVED REFLECTING SURFACE DEFINING A CENTRAL AXIS ORIGINATING AT A POINT IN SAID CURVED SURFACE AND ORIENTED PERPENDICULARLY TO SAID SURFACE AT SAID POINT OF ORIGIN, A FEED POINT ON SAID CENTRAL AXIS AND SPACED APART FROM SAID CURVED SURFACE; AND AN ARRAY OF AT LEAST TWO FEEDHORNS MOUNTED AT SAID FEED POINT FOR ILLUMINATING SAID CURVED SURFACE; AND THE CURVATURE OF SAID CURVED SURFACE COOPERATING WITH SAID FEEDHORNS TO PROVIDE AN APERTURE PHASE DISTRIBUTION WHICH VARIES FROM A PLANAR PHASE FRONT AS A CONTINUOUS EVEN VALUED FUNCTION OF A POWER GREATER THAN UNITY OF THE APERTURE DIMENSION.
Claim 2
Dependent Claim
138 words
IN A MONOPULSE RECEIVING ANTENNA FOR PRODUCING FIRST AND SECOND MONOPULSE MICROWAVE SIGNALS IN RESPONSE TO RECEIVED MICROWAVE SIGNALS OF A SELECTED CARRIER FREQUENCY, MEANS FOR PROVIDING A SELECTED APERTURE PHASE DISTRIBUTION IN SAID MONOPULSE RECEIVING ANTENNA COMPRISING A CONTINUOUS CURVED REFLECTING SURFACE DEFINING A CENTRAL AXIS ORIGINATING AT A POINT IN SAID CURVED SURFACE AND ORIENTED PERPENDICULARLY TO SAID SURFACE AT SAID POINT OF ORIGIN, A FEED POINT ON SAID CENTRAL AXIS AND SPACED APART FROM SAID CURVED SURFACE; AND AN ARRAY OF AT LEAST TWO FEEDHORNS MOUNTED AT SAID FEED POINT FOR ILLUMINATING SAID CURVED SURFACE; AND THE CURVATURE OF SAID CURVED SURFACE COOPERATING WITH SAID FEEDHORNS TO PROVIDE AN APERTURE PHASE DISTRIBUTION WHICH VARIES FROM A PLANAR PHASE FRONT AS A CONTINUOUS EVEN VALUED FUNCTION OF A POWER GREATER THAN UNITY OF THE APERTURE DIMENSION.
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) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |