US3153786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving target indicator canceller
Assignee: Individual
•
Filing: 1959-11-06
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Granted: 1964-10-20
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Expires: 1979-11-06
Abstract
No abstract record available.
Inventors
- 👤 Roy E Byington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:12
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
197 words
A MOVING TARGET INDICATING SYSTEM COMPRISING: (A) A RADAR SYSTEM INCLUDING A PULSE REPETITION FREQUENCY GENERATOR FOR CONTROLLING THE TIME INTERVAL BETWEEN PULSES TRANSMITTED BY SAID RADAR SYSTEM; (B) AN IF CARRIER MODULATOR CONNECTED TO AND RESPONSIVE TO THE OUTPUT OF SAID RADAR SYSTEM FOR PROVIDING A SIGNAL MODULATED BY THE OUTPUT SIGNAL FROM SAID RADAR SYSTEM; (C) A CANCELLATION CIRCUIT INCLUDING FIRST AND SECOND CHANNELS FOR PROVIDING DELAYED AND UNDELAYED SIGNALS, SAID FIRST CHANNEL INCLUDING A FIXED DELAY LINE CONNECTED TO THE OUTPUT OF SAID MODULATOR AND A GAIN CONTROL MEANS CONNECTED TO SAID FIXED DELAY LINE, SAID SECOND CHANNEL HAVING AN INPUT CONNECTED TO THE OUTPUT OF SAID MODULATOR, SAID CANCELLATION CIRCUIT ALSO INCLUDING A DIFFERENTIAL AMPLIFIER CONNECTED TO SAID FIRST AND SECOND CHANNELS FOR PROVIDING A CANCELLATION CIRCUIT OUTPUT SIGNAL; (D) A VARIABLE DELAY AMPLIFIER; (E) MEANS FOR COUPLING SAID VARIABLE DELAY AMPLIFIER TO THE OUTPUT OF SAID FIXED DELAY LINE; (F) MEANS FURTHER COUPLING SAID VARIABLE DELAY AMPLIFIER TO THE OUTPUT OF SAID CANCELLATION CIRCUIT; AND (G) PULSE GENERATING MEANS HAVING ITS INPUT COUPLED TO AND RESPONSIVE TO SAID VARIABLE DELAY AMPLIFIER AND HAVING ITS OUTPUT COUPLED TO SAID PULSE REPETITION FREQUENCY GENERATOR.
Claim 2
Dependent Claim
197 words
A MOVING TARGET INDICATING SYSTEM COMPRISING: (A) A RADAR SYSTEM INCLUDING A PULSE REPETITION FREQUENCY GENERATOR FOR CONTROLLING THE TIME INTERVAL BETWEEN PULSES TRANSMITTED BY SAID RADAR SYSTEM; (B) AN IF CARRIER MODULATOR CONNECTED TO AND RESPONSIVE TO THE OUTPUT OF SAID RADAR SYSTEM FOR PROVIDING A SIGNAL MODULATED BY THE OUTPUT SIGNAL FROM SAID RADAR SYSTEM; (C) A CANCELLATION CIRCUIT INCLUDING FIRST AND SECOND CHANNELS FOR PROVIDING DELAYED AND UNDELAYED SIGNALS, SAID FIRST CHANNEL INCLUDING A FIXED DELAY LINE CONNECTED TO THE OUTPUT OF SAID MODULATOR AND A GAIN CONTROL MEANS CONNECTED TO SAID FIXED DELAY LINE, SAID SECOND CHANNEL HAVING AN INPUT CONNECTED TO THE OUTPUT OF SAID MODULATOR, SAID CANCELLATION CIRCUIT ALSO INCLUDING A DIFFERENTIAL AMPLIFIER CONNECTED TO SAID FIRST AND SECOND CHANNELS FOR PROVIDING A CANCELLATION CIRCUIT OUTPUT SIGNAL; (D) A VARIABLE DELAY AMPLIFIER; (E) MEANS FOR COUPLING SAID VARIABLE DELAY AMPLIFIER TO THE OUTPUT OF SAID FIXED DELAY LINE; (F) MEANS FURTHER COUPLING SAID VARIABLE DELAY AMPLIFIER TO THE OUTPUT OF SAID CANCELLATION CIRCUIT; AND (G) PULSE GENERATING MEANS HAVING ITS INPUT COUPLED TO AND RESPONSIVE TO SAID VARIABLE DELAY AMPLIFIER AND HAVING ITS OUTPUT COUPLED TO SAID PULSE REPETITION FREQUENCY GENERATOR.
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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |