US3259902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna with electrically variable reflector
Assignee: Dorne and Margolin Inc
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Filing: 1961-10-04
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Granted: 1966-07-05
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Robert G Malech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:04
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/44; H01Q3/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A RADIO FREQUENCY ANTENNA SYSTEM COMPRISING A REFLECTOR ASSEMBLY; A FEED ELEMENT DIRECTED TOWARD THE CENTER OF SAID ASSEMBLY AND SPACED THEREFROM A DISTANCE BETWEEN APPROXIMATELY ONE-HALF AND ONE-QUARTER THE MAXIMUM DIMENSION OF SAID ASSEMBLY; A RADIO FREQUENCY TRANSMISSION LINE CONNECTED TO SAID FEED ELEMENT AND ADAPTED TO BE CONNECTED TO ANTENNA UTILIZATION APPARATUS, SAID ASSEMBLY COMPRISING A PLURALITY OF ELEMENTAL REFLECTOR UNITS EACH HAVING A RECTANGULAR HORN ANTENNA, AN ELECTRICALLY CONTROLLABLE PHASE CONTROL ELEMENT CONNECTED TO SAID HORN ANTENNA BY WAVEGUIDE TRANSMISSION LINE TO MODIFY A SIGNAL RECEIVED BY SAID HORN ANTENNA, AND SIGNAL REFLECTING MEANS CONNECTED TO RECEIVE THE MODIFIED SIGNAL FROM SAID HORN ANTENNA AND PHASE CONTROL ELEMENT AND RETURN IT FOR TRANSMISSION FROM SAID HORN ANTENNA; AND MEANS FOR TRANSMITTING A SET OF CONTROL SIGNALS TO THE RESPECTIVE PHASE CONTROL ELEMENTS TO PROVIDE PREDETERMINED PHASE SHIFTS OF RESPECTIVE PORTIONS OF THE WAVE FRONT IMPINGING ON SAID REFLECTOR ASSEMBLY.
Claim 2
Dependent Claim
152 words
A RADIO FREQUENCY ANTENNA SYSTEM COMPRISING A REFLECTOR ASSEMBLY; A FEED ELEMENT DIRECTED TOWARD THE CENTER OF SAID ASSEMBLY AND SPACED THEREFROM A DISTANCE BETWEEN APPROXIMATELY ONE-HALF AND ONE-QUARTER THE MAXIMUM DIMENSION OF SAID ASSEMBLY; A RADIO FREQUENCY TRANSMISSION LINE CONNECTED TO SAID FEED ELEMENT AND ADAPTED TO BE CONNECTED TO ANTENNA UTILIZATION APPARATUS, SAID ASSEMBLY COMPRISING A PLURALITY OF ELEMENTAL REFLECTOR UNITS EACH HAVING A RECTANGULAR HORN ANTENNA, AN ELECTRICALLY CONTROLLABLE PHASE CONTROL ELEMENT CONNECTED TO SAID HORN ANTENNA BY WAVEGUIDE TRANSMISSION LINE TO MODIFY A SIGNAL RECEIVED BY SAID HORN ANTENNA, AND SIGNAL REFLECTING MEANS CONNECTED TO RECEIVE THE MODIFIED SIGNAL FROM SAID HORN ANTENNA AND PHASE CONTROL ELEMENT AND RETURN IT FOR TRANSMISSION FROM SAID HORN ANTENNA; AND MEANS FOR TRANSMITTING A SET OF CONTROL SIGNALS TO THE RESPECTIVE PHASE CONTROL ELEMENTS TO PROVIDE PREDETERMINED PHASE SHIFTS OF RESPECTIVE PORTIONS OF THE WAVE FRONT IMPINGING ON SAID REFLECTOR ASSEMBLY.
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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |