US3235819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave modulator using single crystal ferrite
Assignee: General Precision Inc
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Filing: 1962-04-02
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Granted: 1966-02-15
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Expires: 1982-04-02
Abstract
No abstract record available.
Inventors
- 👤 Carvelas James
- 👤 Richard M Vesper
- 👤 Heinz H Weichardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:36
CPC Classifications
H; H03; H03C; H03C7/00; H03C7/02; H03C7/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A MICROWAVE MODULATOR COMPRISING, A SIGNAL-CRYSTAL SPHERE OF FERRITE CAPABLE OF FERROMAGNETIC RESONANCE, A MICROWAVE RESONANT CAVITY, MEANS APPLYING MICROWAVE ENERGY AT A SELECTED FREQUENCY THERETO, MEANS SUPPORTING SAID SPHERE AT A POINT OF HIGH FIELD INTENSITY IN SAID CAVITY, A LOAD CONNECTED TO SAID CAVITY, MEANS APPLYING A CONTINUOUS MAGNETIC FIELD TO SAID SPHERE IN A DIRECTION PERPENDICULAR TO THE MICROWAVE MAGNETIC FIELD PLANE, THE MAGNITUDE OF SAID FIELD PRODUCING FERROMAGNETIC RESONACE AT A FREQUENCY EQUAL TO SAID SELECTED MICROWAVE FREQUENCY, MEANS APPLYING AN INITIAL BIASING MECHANINCAL STRESS TO SAID SPHERE THEREBY DEFORMING ITS CRYSTAL LATTICE AND REDUCING ITS FERROMAGNETIC RESONANCE FREQUENCY AND CHANGING THE AMOUNT OF MICROWAVE ENERGY TRANSMITTED THROUGH SAID CAVITY, AND MEANS APPLYING A MECHANICAL STRESS FUNCTION TO SAID SPHERE WHEREBY SAID FUNCTION APPEARS AS AN AMPLITUDE MODULATION OF THE MICROWAVE ENERGY TRANSMITTED TO SAID LOAD.
Claim 2
Dependent Claim
140 words
A MICROWAVE MODULATOR COMPRISING, A SIGNAL-CRYSTAL SPHERE OF FERRITE CAPABLE OF FERROMAGNETIC RESONANCE, A MICROWAVE RESONANT CAVITY, MEANS APPLYING MICROWAVE ENERGY AT A SELECTED FREQUENCY THERETO, MEANS SUPPORTING SAID SPHERE AT A POINT OF HIGH FIELD INTENSITY IN SAID CAVITY, A LOAD CONNECTED TO SAID CAVITY, MEANS APPLYING A CONTINUOUS MAGNETIC FIELD TO SAID SPHERE IN A DIRECTION PERPENDICULAR TO THE MICROWAVE MAGNETIC FIELD PLANE, THE MAGNITUDE OF SAID FIELD PRODUCING FERROMAGNETIC RESONACE AT A FREQUENCY EQUAL TO SAID SELECTED MICROWAVE FREQUENCY, MEANS APPLYING AN INITIAL BIASING MECHANINCAL STRESS TO SAID SPHERE THEREBY DEFORMING ITS CRYSTAL LATTICE AND REDUCING ITS FERROMAGNETIC RESONANCE FREQUENCY AND CHANGING THE AMOUNT OF MICROWAVE ENERGY TRANSMITTED THROUGH SAID CAVITY, AND MEANS APPLYING A MECHANICAL STRESS FUNCTION TO SAID SPHERE WHEREBY SAID FUNCTION APPEARS AS AN AMPLITUDE MODULATION OF THE MICROWAVE ENERGY TRANSMITTED TO SAID LOAD.
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |