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Patent US3174150A successfully refreshed from Google Patents.
US3174150A
Expired / Lapsed
US
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Self-focusing antenna system
Assignee: Unisys Corp
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Filing: 1962-06-29
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Granted: 1965-03-16
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Peter J Sferrazza
- 👤 Richard L Smedes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:42
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/34; H01Q3/42; H04; H04B; H04B7/00; H04B7/02; H04B7/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
163 words
A HIGH GAIN ANTENNA SYSTEM COMPRISING A SOURCE OF INDEPENDENTLY GENERATED INTERMEDIATE FREQUENCY REFERENCE VOLTAGE, A PLURALITY OF CONTROLLED ANTENNA ELEMENTS, A PHASE LOCKED LOOP COUPLED TO EACH CONTROLLED ANTENNA ELEMENT, SAID LOOPS EACH CONTAINING SYNCHRONIZING MEANS CONNECTED TO RECEIVE A SIGNAL DIRECTLY FROM THE ASSOCIATED ANTENNA ELEMENT, HETERODYNING MEANS CONNECTED TO RECEIVE A SIGNAL FROM SAID SYNCHRONIZING MEANS FOR PRODUCING A SIGNAL IN A PORTION OF SAID LOOP WITH A FREQUENCY EQUAL TO THAT OF SAID REFERENCE VOLTAGE, COMPARISON MEANS COUPLED TO SAID SOURCE OF REFERENCE VOLTAGE FOR PRODUCING AN ERROR VOLTAGE WHENEVER THE SIGNAL IN SAID LOOP DEPARTS FROM SYNCHRONISM WITH SAID REFERENCE VOLTAGE, CONTROL MEANS COUPLED TO RECEIVE THE OUTPUT OF SAID COMPARISON MEANS, SAID SYNCHRONIZING MEANS BEING COUPLED TO SAID CONTROL MEANS FOR CORRECTING THE SIGNAL IN SAID LOOP WHENEVER SUCH SIGNAL DEPARTS FROM THE REFERENCE, AND SIGNAL OUTPUT MEANS FOR EXTRACTING A COHERENT SIGNAL FROM EACH LOOP UPON THE RECEPTION OF AN ELECTROMAGNETIC WAVE BY SAID ANTENNA ELEMENTS.
References Cited (Backward Citations)
US3036210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |