Patent US3220007A successfully refreshed from Google Patents.
US3220007A
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Antennas for monopulse radar systems having planar slot array and coupling means for providing sum and difference signals
Assignee: Thales SA
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Filing: 1962-03-14
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Granted: 1965-11-23
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Expires: 1982-03-14
Abstract
No abstract record available.
Inventors
- 👤 Thourel Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:00
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/0006; H01Q21/0031; H01Q25/00; H01Q25/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN ANTENNA FOR ULTRA-HIGH FREQUENCY ENERGY COMPRISING: A PLURALITY OF WAVEGUIDES EXTENDING IN THE SAME PLANE IN PARALLEL RELATIONSHIP TO ONE ANOTHER AND ARRANGED IN SUCCESSIVE PAIRS, EACH GUIDE HAVING RADIATING DISCONTINUITIES EQUISPACED ALONG SAID GUIDE; MEANS ASSOCIATED WITH EACH PAIR OF SAID GUIDES FOR RECEIVING THE SUM OF THE SIGNALS COLLECTED BY THE TWO GUIDES OF SAID PAIR AND THE DIFFERENCE OF SAID SIGNALS; AND PARABOLIC REFLECTOR MEANS FOR SUMMING THE RESPECTIVE SUM SIGNALS OF SAID PAIRS AND THE RESPECTIVE DIFFERENCE SIGNALS THEREOF.
Claim 2
Dependent Claim
84 words
AN ANTENNA FOR ULTRA-HIGH FREQUENCY ENERGY COMPRISING: A PLURALITY OF WAVEGUIDES EXTENDING IN THE SAME PLANE IN PARALLEL RELATIONSHIP TO ONE ANOTHER AND ARRANGED IN SUCCESSIVE PAIRS, EACH GUIDE HAVING RADIATING DISCONTINUITIES EQUISPACED ALONG SAID GUIDE; MEANS ASSOCIATED WITH EACH PAIR OF SAID GUIDES FOR RECEIVING THE SUM OF THE SIGNALS COLLECTED BY THE TWO GUIDES OF SAID PAIR AND THE DIFFERENCE OF SAID SIGNALS; AND PARABOLIC REFLECTOR MEANS FOR SUMMING THE RESPECTIVE SUM SIGNALS OF SAID PAIRS AND THE RESPECTIVE DIFFERENCE SIGNALS THEREOF.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |