Patent US3265976A successfully refreshed from Google Patents.
US3265976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined frequency and phase discriminator
Assignee: Collins Radio Co
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Filing: 1964-02-24
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Granted: 1966-08-09
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Expires: 1984-02-24
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel L Broadhead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:23
CPC Classifications
H; H03; H03D; H03D13/00; H03D13/007; H03D13/009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
244 words
A COMBINED FREQUENCY AND PHASE DISCRIMINATOR CIRCUIT CONNECTED TO RECEIVE A FIRST FREQUENCY INPUT SIGNAL FROM A FIRST SIGNAL SOURCE AND A SECOND FREQUENCY INPUT SIGNAL FROM A SECOND SIGNAL SOURCE OF DEVELOPING FREQUENCEY DIFFERENCE OUTPUT VOLTAGES AND/OR PHASE DISCRIMINATOR OUTPUT VOLTAGES THROUGH THE FREQUENCY DIFFERENCE, PHASE ERROR, AND OVERLAPPING RANGES OF DISCRIMINATOR OPERATION, AND INCLUDING: FIRST FREQUENCY INPUT SIGNAL COUPLING MEANS; DUAL OUTPUT MEANS FROM SAID FIRST FREQUENCY INPUT SIGNAL COUPLING MEANS; MEANS IMPARTING A PHASE SHIFT IN THE SIGNAL OUTPUTS TRANSMITTED TO SAID DUAL OUTPUT MEANS; SECOND FREQUENCY INPUT SIGNAL COUPLING MEANS; SAID SECOND FREQUENCY INPUT SIGNAL COUPLING MEANS HAVING DUAL SECONDARY COUPLING ELEMENTS WITH ONE OF SAID DUAL COUPLING ELEMENTS CONNECTED TO RECEIVE A SIGNAL FROM ONE OF SAID DUAL OUTPUT MEANS OF THE FIRST SIGNAL COUPLING MEANS, AND THE OTHER SECONDARY COUPLING ELEMENT BEING CONNECTED TO RECEIVE A SIGNAL FROM THE OTHER OF SAID DUAL OUTPUT MEANS; EACH OF SAID SECONDARY COUPLING ELEMENTS ALSO BEING CONNECTED TO A SIGNAL ENVELOPE DETECTOR PORTION; SAID SIGNAL ENVELOPE DETECTOR PORTION HAVING TWO INPUT CONNECTIONS TO AN OUTPUT SIGNAL PEAK INTEGRATOR SECTION; SAID OUTPUT SIGNAL PEAK INTEGRATOR SECTION INCLUDING A FREQUENCY SIGNAL BIASING NETWORK BETWEEN EACH OUTPUT FROM THE SIGNAL ENVELOPE DETECTOR PORTION AND TWO DIODES CONNECTED CATHODE TO ANODE BETWEEN THE TWO FREQUENCY SIGNAL BIASING NETWORKS; AND THE COMMON JUNCTION OF SAID DIODES BEING CONNECTED THROUGH CAPACITIVE CIRCUIT MEANS TO A VOLTAGE POTENTIAL REFERENCE SOURCE AND THROUGH RESISTIVE MEANS TO AN OUTPUT TERMINAL.
Claim 2
Dependent Claim
244 words
A COMBINED FREQUENCY AND PHASE DISCRIMINATOR CIRCUIT CONNECTED TO RECEIVE A FIRST FREQUENCY INPUT SIGNAL FROM A FIRST SIGNAL SOURCE AND A SECOND FREQUENCY INPUT SIGNAL FROM A SECOND SIGNAL SOURCE OF DEVELOPING FREQUENCEY DIFFERENCE OUTPUT VOLTAGES AND/OR PHASE DISCRIMINATOR OUTPUT VOLTAGES THROUGH THE FREQUENCY DIFFERENCE, PHASE ERROR, AND OVERLAPPING RANGES OF DISCRIMINATOR OPERATION, AND INCLUDING: FIRST FREQUENCY INPUT SIGNAL COUPLING MEANS; DUAL OUTPUT MEANS FROM SAID FIRST FREQUENCY INPUT SIGNAL COUPLING MEANS; MEANS IMPARTING A PHASE SHIFT IN THE SIGNAL OUTPUTS TRANSMITTED TO SAID DUAL OUTPUT MEANS; SECOND FREQUENCY INPUT SIGNAL COUPLING MEANS; SAID SECOND FREQUENCY INPUT SIGNAL COUPLING MEANS HAVING DUAL SECONDARY COUPLING ELEMENTS WITH ONE OF SAID DUAL COUPLING ELEMENTS CONNECTED TO RECEIVE A SIGNAL FROM ONE OF SAID DUAL OUTPUT MEANS OF THE FIRST SIGNAL COUPLING MEANS, AND THE OTHER SECONDARY COUPLING ELEMENT BEING CONNECTED TO RECEIVE A SIGNAL FROM THE OTHER OF SAID DUAL OUTPUT MEANS; EACH OF SAID SECONDARY COUPLING ELEMENTS ALSO BEING CONNECTED TO A SIGNAL ENVELOPE DETECTOR PORTION; SAID SIGNAL ENVELOPE DETECTOR PORTION HAVING TWO INPUT CONNECTIONS TO AN OUTPUT SIGNAL PEAK INTEGRATOR SECTION; SAID OUTPUT SIGNAL PEAK INTEGRATOR SECTION INCLUDING A FREQUENCY SIGNAL BIASING NETWORK BETWEEN EACH OUTPUT FROM THE SIGNAL ENVELOPE DETECTOR PORTION AND TWO DIODES CONNECTED CATHODE TO ANODE BETWEEN THE TWO FREQUENCY SIGNAL BIASING NETWORKS; AND THE COMMON JUNCTION OF SAID DIODES BEING CONNECTED THROUGH CAPACITIVE CIRCUIT MEANS TO A VOLTAGE POTENTIAL REFERENCE SOURCE AND THROUGH RESISTIVE MEANS TO AN OUTPUT TERMINAL.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |