Patent US3290688A successfully refreshed from Google Patents.
US3290688A
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Backward angle travelling wave wire mesh antenna array
Assignee: Ohio State University Research Foundation
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Filing: 1962-06-11
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Granted: 1966-12-06
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Expires: 1982-06-11
Abstract
No abstract record available.
Inventors
- 👤 John D Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:38
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/22; H01Q13/00; H01Q13/20; H01Q13/28; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/068
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
A BROADBAND DIRECTIONAL ANTENNA STRUCTURE COMPRISING A PLURALITY OF CONDUCTORS INTERCONNECTED TO FORM A RECTANGULAR MESH, THE SHORT SIDES OF SAID RECTANGLES CONNECTED TO THE CENTERS OF THE LONG SIDES OF SAID RECTANGLES, SAID RECTANGLES BEING IN PARALLEL RELATIONSHIP TO EACH OTHER AND WHEREIN THE SHORT SIDES OF THE RECTANGLES FORM A LADDER, A GROUND PLANE, MEANS FOR MAINTAINING SAID GROUND PLANE IN FIXED RELATION FROM SAID MESH, AND FEED MEANS CONNECTED TO ONE END OF SAID MESH AND SAID GROUND PLANE FOR EXCITING SAID ANTENNA BY A TRAVELLING WAVE PROPAGATING FROM SAID ONE END TO THE OTHER END OF SAID MESH AND WHEREIN THERE IS A PROGRESSIVE SHIFT IN PHASE FROM ONE LADDER OF THE MESH TO THE NEXT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |