Patent US3079557A successfully refreshed from Google Patents.
US3079557A
Expired / Lapsed
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Transponder
Assignee: Texas Instruments Inc
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Filing: 1960-11-02
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Granted: 1963-02-26
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Willie A Crabtree
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/82; G01S13/02; G01S13/50; G01S13/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
239 words
A TRANSPONDER COMPRISING A RECEIVING ANTENNA, AN OSCILLATOR, A FIRST FREQUENCY MULTIPLIER CONNECTED TO MULTIPLY THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID OSCILLATOR BY A PREDETERMINED FACTOR, A FIRST MIXER CONNECTED TO MIX THE OUTPUT SIGNAL OF SAID FIRST FREQUENCY MULTIPLIER AND THE SIGNAL DETECTED BY SAID RECEIVING ANTENNA, AN IF AMPLIFIER CONNECTED TO AMPLIFY THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID FIRST MIXER, A FREQUENCY DIVIDER CONNECTED TO DIVIDE THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID IF AMPLIFIER BY SAID PREDETERMINED FACTOR, A SECOND MIXER CONNECTED TO MIX THE OUTPUT SIGNALS OF SAID FREQUENCY DIVIDER AND SAID OSCILLATOR, A FIRST FILTER CONNECTED TO PASS THE SUM COMPONENT AND FILTER OUT THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID SECOND MIXER, A SECOND FREQUENCY MULTIPLIER CONNECTED TO MULTIPLY THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID FIRST FILTER, A THIRD MIXER CONNECTED TO MIX THE OUTPUT SIGNALS OF SAID FIRST FREQUENCY MULTIPLIER AND SAID IF AMPLIFIER, A SECOND FILTER CONNECTED TO PASS THE SUM COMPONENT AND FILTER OUT THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID THIRD MIXER, A FOURTH MIXER CONNECTED TO MIX THE OUTPUT SIGNALS OF SAID SECOND FREQUENCY MULTIPLIER AND SAID SECOND FILTER, A THIRD FILTER CONNECTED TO PASS THE SUM COMPONENT AND FILTER OUT THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID FOURTH MIXER, AND A TRANSMITTING ANTENNA CONNECTED TO TRANSMIT THE OUTPUT SIGNAL OF SAID THIRD FILTER.
Claim 2
Dependent Claim
239 words
A TRANSPONDER COMPRISING A RECEIVING ANTENNA, AN OSCILLATOR, A FIRST FREQUENCY MULTIPLIER CONNECTED TO MULTIPLY THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID OSCILLATOR BY A PREDETERMINED FACTOR, A FIRST MIXER CONNECTED TO MIX THE OUTPUT SIGNAL OF SAID FIRST FREQUENCY MULTIPLIER AND THE SIGNAL DETECTED BY SAID RECEIVING ANTENNA, AN IF AMPLIFIER CONNECTED TO AMPLIFY THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID FIRST MIXER, A FREQUENCY DIVIDER CONNECTED TO DIVIDE THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID IF AMPLIFIER BY SAID PREDETERMINED FACTOR, A SECOND MIXER CONNECTED TO MIX THE OUTPUT SIGNALS OF SAID FREQUENCY DIVIDER AND SAID OSCILLATOR, A FIRST FILTER CONNECTED TO PASS THE SUM COMPONENT AND FILTER OUT THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID SECOND MIXER, A SECOND FREQUENCY MULTIPLIER CONNECTED TO MULTIPLY THE FREQUENCY OF THE OUTPUT SIGNAL OF SAID FIRST FILTER, A THIRD MIXER CONNECTED TO MIX THE OUTPUT SIGNALS OF SAID FIRST FREQUENCY MULTIPLIER AND SAID IF AMPLIFIER, A SECOND FILTER CONNECTED TO PASS THE SUM COMPONENT AND FILTER OUT THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID THIRD MIXER, A FOURTH MIXER CONNECTED TO MIX THE OUTPUT SIGNALS OF SAID SECOND FREQUENCY MULTIPLIER AND SAID SECOND FILTER, A THIRD FILTER CONNECTED TO PASS THE SUM COMPONENT AND FILTER OUT THE DIFFERENCE COMPONENT IN THE OUTPUT SIGNAL OF SAID FOURTH MIXER, AND A TRANSMITTING ANTENNA CONNECTED TO TRANSMIT THE OUTPUT SIGNAL OF SAID THIRD FILTER.
References Cited (Backward Citations)
US2687476A
Cited
US2614211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |