US3364490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable beamwidth antennas utilizing defocusing
Assignee: Hazeltine Research Inc
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Filing: 1963-09-26
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Granted: 1968-01-16
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Expires: 1983-09-26
Abstract
No abstract record available.
Inventors
- 👤 Peter W Hannan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:50
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/44; G01S13/4409; H; H01; H01Q; H01Q25/00; H01Q25/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A VARIABLE BEAMWIDTH ANTENNA FOR USE IN A SYSTEM WHICH DERIVES INFORMATION DEPENDENT ON PHASE RELATIONS EXISTING BETWEN DIFFERENT PORTIONS OF A RECEIVED SIGNAL, COMPRISING: AN ANTENNA; FIRST MEANS FOR CHANGING THE FOCUSING EFFECT PROVIDED BY SAID ANTENNA; AND SECOND MEANS COUPLED TO SAID FIRST MEANS FOR PROVIDING PHASE SHIFT COMPENSATION RELATED TO THE CHANGE IN FOCUSING EFFECT PRODUCED BY SAID FIRST MEANS; WHEREBY THE FOCUS OF SAID ANTENNA CAN BE VARIED WHILE MAINTAINING SAID PHASE RELATIONSHIPS SUBSTANTIALLY UNCHANGED.
Claim 2
Dependent Claim
79 words
A VARIABLE BEAMWIDTH ANTENNA FOR USE IN A SYSTEM WHICH DERIVES INFORMATION DEPENDENT ON PHASE RELATIONS EXISTING BETWEN DIFFERENT PORTIONS OF A RECEIVED SIGNAL, COMPRISING: AN ANTENNA; FIRST MEANS FOR CHANGING THE FOCUSING EFFECT PROVIDED BY SAID ANTENNA; AND SECOND MEANS COUPLED TO SAID FIRST MEANS FOR PROVIDING PHASE SHIFT COMPENSATION RELATED TO THE CHANGE IN FOCUSING EFFECT PRODUCED BY SAID FIRST MEANS; WHEREBY THE FOCUS OF SAID ANTENNA CAN BE VARIED WHILE MAINTAINING SAID PHASE RELATIONSHIPS SUBSTANTIALLY UNCHANGED.
References Cited (Backward Citations)
US2716746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |