Patent US2658441A successfully refreshed from Google Patents.
US3231825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
D.c. pumped cyclotron wave parametric amplifier
Assignee: Raytheon Co
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Filing: 1960-11-14
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Granted: 1966-01-25
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Expires: 1980-11-14
Abstract
No abstract record available.
Inventors
- 👤 Donald C Forster
- 👤 Curtis C Johnson
- 👤 Louis D Smullin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:02
CPC Classifications
H; H01; H01J; H01J25/00; H01J25/34; H01J25/49
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
208 words
A FAST CYCLOTRON WAVE, BEAM-TYPE, PARAMETRIC AMPLIFIER DEVICE COMPRISING: GUN MEANS FOR PROJECTING A STREAM OF ELECTRONS ALONG A PREDETERMINED AXIAL PATH; MAGNET MEANS FOR PROVIDING A MAGNETIC FIELD FOR FOCUSING SAID STREAM ALONG SAID PATH; ELECTRON COUPLER MEANS DISPOSED ABOUT SAID STREAM FOR COUPLING THERETO ELECTROMAGNETIC SIGNALS TO BE AMPLIFIED AND WHICH EXCITE THE FAST CYCLOTRON WAVE ASSOCIATED WITH THE CYCLOTRON ORBITING OF SAID STREAM ELECTRONS IN THE ENVIRONMENT OF SAID MAGNETIC FIELD; AND DIRECT-CURRENT ENERGIZED PUMP MEANS FOR INCREASING THE AVERAGE RADIUS OF SAID CYCLOTRON ORBITING, SAID PUMP MEANS INCLUDING A PLURALITY OF AXIALLY SPACED ARRAYS OF CONDUCTIVE PLATES DISPOSED ALONG SAID AXIAL PATH CONTIGUOUSLY TO SAID ELECTRON STREAM, EACH OF SAID ARRAYS CONSISTING OF TWO COPLANAR PLATES DISPOSED ON OPPOSITE SIDES OF SAID ELECTRON STREAM IN A PLANE PERPENDICULAR TO SAID ELECTRON STREAM, THE TWO PLATES IN EACH ARRAY BEING MAINTAINED AT THE SAME DIRECT CURRENT ELECTRICAL POTENTIAL AS ONE ANOTHER BUT AT A DIFFERENT DIRECT CURRENT ELECTRICAL POTENTIAL FROM THE PLATES IN THE AXIALLY ADJACENT ARRAYS, SAID ARRAY OF PLATES BEING AXIALLY SPACED SUCH THAT AS THE MODULATED STREAM IS PROJECTED ALONG SAID PATH THE AVERAGE RADIUS OF ORBITING IS INCREASED DUE TO INTERACTION BETWEEN SAID ELECTRONS AND ELECTROSTATIC FIELDS DEVELOPED BY SAID PLATES.
Claim 2
Dependent Claim
208 words
A FAST CYCLOTRON WAVE, BEAM-TYPE, PARAMETRIC AMPLIFIER DEVICE COMPRISING: GUN MEANS FOR PROJECTING A STREAM OF ELECTRONS ALONG A PREDETERMINED AXIAL PATH; MAGNET MEANS FOR PROVIDING A MAGNETIC FIELD FOR FOCUSING SAID STREAM ALONG SAID PATH; ELECTRON COUPLER MEANS DISPOSED ABOUT SAID STREAM FOR COUPLING THERETO ELECTROMAGNETIC SIGNALS TO BE AMPLIFIED AND WHICH EXCITE THE FAST CYCLOTRON WAVE ASSOCIATED WITH THE CYCLOTRON ORBITING OF SAID STREAM ELECTRONS IN THE ENVIRONMENT OF SAID MAGNETIC FIELD; AND DIRECT-CURRENT ENERGIZED PUMP MEANS FOR INCREASING THE AVERAGE RADIUS OF SAID CYCLOTRON ORBITING, SAID PUMP MEANS INCLUDING A PLURALITY OF AXIALLY SPACED ARRAYS OF CONDUCTIVE PLATES DISPOSED ALONG SAID AXIAL PATH CONTIGUOUSLY TO SAID ELECTRON STREAM, EACH OF SAID ARRAYS CONSISTING OF TWO COPLANAR PLATES DISPOSED ON OPPOSITE SIDES OF SAID ELECTRON STREAM IN A PLANE PERPENDICULAR TO SAID ELECTRON STREAM, THE TWO PLATES IN EACH ARRAY BEING MAINTAINED AT THE SAME DIRECT CURRENT ELECTRICAL POTENTIAL AS ONE ANOTHER BUT AT A DIFFERENT DIRECT CURRENT ELECTRICAL POTENTIAL FROM THE PLATES IN THE AXIALLY ADJACENT ARRAYS, SAID ARRAY OF PLATES BEING AXIALLY SPACED SUCH THAT AS THE MODULATED STREAM IS PROJECTED ALONG SAID PATH THE AVERAGE RADIUS OF ORBITING IS INCREASED DUE TO INTERACTION BETWEEN SAID ELECTRONS AND ELECTROSTATIC FIELDS DEVELOPED BY SAID PLATES.
Claim 3
Dependent Claim
195 words
A CYCLOTRON WAVE, BEAM-TYPE, PARAMETRIC AMPLIFIER DEVICE COMPRISING: GUN MEANS FOR PROJECTING A STREAM OF ELECTRONS ALONG A PREDETERMINED AXIAL PATH; MAGNET MEANS FOR PROVIDING A FOCUSING MAGNETIC FIELD ALONG SAID STREAM PARALLEL TO ITS AXIAL PATH; INPUT ELECTRON COUPLER MEANS DISPOSED ABOUT SAID STREAM FOR COUPLING THERETO RADIO FREQUENCY SIGNALS TO BE AMPLIFIED WHICH EXCITE A CYCLOTRON WAVE ASSOCIATED WITH THE CYCLOTRON ORBITING OF SAID ELECTRONS IN THE ENVIRONMENT OF SAID MAGNETIC FIELD; AND DIRECT CURRENT ENERGIZED PUMP MEANS FOR INCREASING THE AVERAGE RADIUS OF SAID CYCLOTRON ORBITING, SAID PUMP MEANS INCLUDING A PLURALITY OF APERTURED CONDUCTIVE PLATES DISPOSED ALONG SAID AXIAL PATH CONTIGUOUSLY ABOUT SAID ELECTRON STREAM AND IN PLANES PERPENDICULAR TO SAID AXIAL PATH, ADJACENT ONES OF SAID PLATES BEING MAINTAINED AT OPPOSITELY POLARIZED DIRECT CURRENT POTENTIALS, SAID POTENTIALS BEING RESPECTIVELY POSITIVE AND NEGATIVE WITH RESPECT TO THE EFFECTIVE VOLTAGE OF SAID ELECTRONS, THE AXIAL SPACING OF SAID PLATES BEING EQUAL TO U0/2FC, THUS PRODUCING AN ELECTROSTATIC FIELD WHICH IS AXIALLY DISTRIBUTED IN A MANNER TO BE SPATIALLY SYNCHRONIZED WITH THE CYCLOTRON ROTATION OF THE ELECTRONS ABOUT SAID AXIAL PATH AT THE FREQUENCY FC AND HAVING AN AXIAL DRIFT VELOCITY OF U0.
Claim 4
Dependent Claim
195 words
A CYCLOTRON WAVE, BEAM-TYPE, PARAMETRIC AMPLIFIER DEVICE COMPRISING: GUN MEANS FOR PROJECTING A STREAM OF ELECTRONS ALONG A PREDETERMINED AXIAL PATH; MAGNET MEANS FOR PROVIDING A FOCUSING MAGNETIC FIELD ALONG SAID STREAM PARALLEL TO ITS AXIAL PATH; INPUT ELECTRON COUPLER MEANS DISPOSED ABOUT SAID STREAM FOR COUPLING THERETO RADIO FREQUENCY SIGNALS TO BE AMPLIFIED WHICH EXCITE A CYCLOTRON WAVE ASSOCIATED WITH THE CYCLOTRON ORBITING OF SAID ELECTRONS IN THE ENVIRONMENT OF SAID MAGNETIC FIELD; AND DIRECT CURRENT ENERGIZED PUMP MEANS FOR INCREASING THE AVERAGE RADIUS OF SAID CYCLOTRON ORBITING, SAID PUMP MEANS INCLUDING A PLURALITY OF APERTURED CONDUCTIVE PLATES DISPOSED ALONG SAID AXIAL PATH CONTIGUOUSLY ABOUT SAID ELECTRON STREAM AND IN PLANES PERPENDICULAR TO SAID AXIAL PATH, ADJACENT ONES OF SAID PLATES BEING MAINTAINED AT OPPOSITELY POLARIZED DIRECT CURRENT POTENTIALS, SAID POTENTIALS BEING RESPECTIVELY POSITIVE AND NEGATIVE WITH RESPECT TO THE EFFECTIVE VOLTAGE OF SAID ELECTRONS, THE AXIAL SPACING OF SAID PLATES BEING EQUAL TO U0/2FC, THUS PRODUCING AN ELECTROSTATIC FIELD WHICH IS AXIALLY DISTRIBUTED IN A MANNER TO BE SPATIALLY SYNCHRONIZED WITH THE CYCLOTRON ROTATION OF THE ELECTRONS ABOUT SAID AXIAL PATH AT THE FREQUENCY FC AND HAVING AN AXIAL DRIFT VELOCITY OF U0.
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) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |