US3276022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual frequency gregorian-newtonian antenna system with newtonian feed located at common focus of parabolic main dish and ellipsoidal sub-dish
Assignee: Aeronca Manufacturing Corp
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Filing: 1964-05-13
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Granted: 1966-09-27
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 John E Brunner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:22
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/18; H01Q19/19; H01Q5/00; H01Q5/40; H01Q5/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN ANTENNA SYSTEM FOR SIMULTANEOUSLY OPERATING AT TWO FREQUENCIES, SAID ANTENNA SYSTEM COMPRISING A SINGLE PARABOLOIDAL MAIN REFLECTOR HAVING AN AXIS AND A FOCUS LOCATED ON SAID AXIS, AN ALLIPOSIDAL SUB-REFLECTOR HAVING A CONTINUOUS SURFACE AND HAVING ONE FOCUS COINCIDENT WITH SAID PARABOLOIDAL FOCUS AND HAVING A SECOND FOCUS LOCATED ON SAID AXIS, A FIRST FEED MEANS DIRECTED TOWARD SAID PARABOLOIDAL REFLECTOR, SAID FIRST FEED MEANS BEING DISPOSED AT THE FOCUS OF SAID PARABOLOIDAL REFLECTOR TO PROVIDE A NEWTONIAN FEED, SECOND FEED MEANS DISPOSED ON SAID AXIS AT THE SECOND FOCUS OF SAID ELLIPSOID FOR PROVIDING A GREGORIAN FEED, SAID SECOND GREGORIAN FEED MEANS OPERATING AT A SUBSTANTIALLY HIGHER FREQUENCY THAN SAID FIRST NEWTONIAN FEED, SAID ANTENNA BEING EFFECTIVE TO REFLECT BOTH SAID GREGORIAN FEED AND SAID NEWTONIAN FEED WITH SUBSTANTIALLY OPTIC-RAY PERFORMANCE.
Claim 2
Dependent Claim
133 words
AN ANTENNA SYSTEM FOR SIMULTANEOUSLY OPERATING AT TWO FREQUENCIES, SAID ANTENNA SYSTEM COMPRISING A SINGLE PARABOLOIDAL MAIN REFLECTOR HAVING AN AXIS AND A FOCUS LOCATED ON SAID AXIS, AN ALLIPOSIDAL SUB-REFLECTOR HAVING A CONTINUOUS SURFACE AND HAVING ONE FOCUS COINCIDENT WITH SAID PARABOLOIDAL FOCUS AND HAVING A SECOND FOCUS LOCATED ON SAID AXIS, A FIRST FEED MEANS DIRECTED TOWARD SAID PARABOLOIDAL REFLECTOR, SAID FIRST FEED MEANS BEING DISPOSED AT THE FOCUS OF SAID PARABOLOIDAL REFLECTOR TO PROVIDE A NEWTONIAN FEED, SECOND FEED MEANS DISPOSED ON SAID AXIS AT THE SECOND FOCUS OF SAID ELLIPSOID FOR PROVIDING A GREGORIAN FEED, SAID SECOND GREGORIAN FEED MEANS OPERATING AT A SUBSTANTIALLY HIGHER FREQUENCY THAN SAID FIRST NEWTONIAN FEED, SAID ANTENNA BEING EFFECTIVE TO REFLECT BOTH SAID GREGORIAN FEED AND SAID NEWTONIAN FEED WITH SUBSTANTIALLY OPTIC-RAY PERFORMANCE.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |