US3136950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double sideband suppressed carrier balanced modulator using a ferrite circulator
Assignee: SPACE TECHNOLOGY LAB Inc
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Filing: 1961-10-02
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Granted: 1964-06-09
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Expires: 1981-10-02
Abstract
No abstract record available.
Inventors
- 👤 Richard C Mackey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:23
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/54; H03C7/00; H03C7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A MODULATOR COMPRISING A FERRITE CIRCULATOR HAVING A PLURALITY OF PORTS IDENTIFIED SERIALLY IN THE DIRECTION OF PROPAGATION OF ENERGY IN SAID CIRCULATOR, MEANS FOR GENERATING A MICROWAVE SIGNAL AND DIRECTING SAID SIGNAL INTO A FIRST PORT, A TRANSMISSION LINE TERMINATED AT ONE END AND CONNECTED AT THE OTHER END TO A SECOND PORT, SAID TRANSMISSION LINE CONTAINING A CONTROLLABLE SHORTING MEANS LOCATED INTERMEDIATE SAID CONTROLLABLE SHORTING MEANS BEING SPACED A DISTANCE SUBSTANTIALLY EQUAL TO AN ODD MULTIPLE OF A QUARTER-WAVELENGTH AT THE OPERATING FREQUENCY OF SAID MICROWAVE CARRIER SIGNAL FROM SAID SHORTED END OF SAID TRANSMISSION LINE, MEANS FOR MODULATING SAID CONTROLLABLE SHORTING MEANS FROM A SUBSTANTIALLY NON-SHORTING CONDITION TO A SHORTING CONDITION, A UTILIZING CIRCUIT CONNECTED TO A THIRD PORT FOR RECEIVING SAID MODULATED CARRIER OUTPUT SIGNAL, AND MEANS CONNECTING SAID FERRITE CIRCULATOR FOR DISSIPATING UNUTILIZED RESIDUAL ENERGY IN SAID CIRCULATOR.
Claim 2
Dependent Claim
143 words
A MODULATOR COMPRISING A FERRITE CIRCULATOR HAVING A PLURALITY OF PORTS IDENTIFIED SERIALLY IN THE DIRECTION OF PROPAGATION OF ENERGY IN SAID CIRCULATOR, MEANS FOR GENERATING A MICROWAVE SIGNAL AND DIRECTING SAID SIGNAL INTO A FIRST PORT, A TRANSMISSION LINE TERMINATED AT ONE END AND CONNECTED AT THE OTHER END TO A SECOND PORT, SAID TRANSMISSION LINE CONTAINING A CONTROLLABLE SHORTING MEANS LOCATED INTERMEDIATE SAID CONTROLLABLE SHORTING MEANS BEING SPACED A DISTANCE SUBSTANTIALLY EQUAL TO AN ODD MULTIPLE OF A QUARTER-WAVELENGTH AT THE OPERATING FREQUENCY OF SAID MICROWAVE CARRIER SIGNAL FROM SAID SHORTED END OF SAID TRANSMISSION LINE, MEANS FOR MODULATING SAID CONTROLLABLE SHORTING MEANS FROM A SUBSTANTIALLY NON-SHORTING CONDITION TO A SHORTING CONDITION, A UTILIZING CIRCUIT CONNECTED TO A THIRD PORT FOR RECEIVING SAID MODULATED CARRIER OUTPUT SIGNAL, AND MEANS CONNECTING SAID FERRITE CIRCULATOR FOR DISSIPATING UNUTILIZED RESIDUAL ENERGY IN SAID CIRCULATOR.
References Cited (Backward Citations)
US2981837A
Cited
US2994828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |