Patent US3277390A successfully refreshed from Google Patents.
US3277390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified heterodyne phase-lock frequency multiplier
Assignee: Collins Radio Co
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Filing: 1964-09-14
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Granted: 1966-10-04
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Frank D Mclin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:57
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/16; H03L7/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A PHASE-LOCKED FREQUENCY MULTIPLIER COMPRISING: MEANS FOR PRODUCING FIRST AND SECOND SIGNALS OF FREQUENCY F AND SEPARATED IN PHASE BY AN ANGLE A, WHERE A IS ANY ANGLE LYING WITHIN THE RANGES OF N90* +-60*, WHERE N IS AN ODD INTEGER; SPECTRUM GENERATOR MEANS RESPONSIVE TO SAID FIRST SIGNAL TO PRODUCE A SPECTRUM OF HARMONICS OF SAID FREQUENCY F; FEEDBACK LOOP MEANS COMPRISING VARIABLE CONTROLLED OSCILLATOR MEANS, MIXER MEANS, FIRST FILTER MEANS, AND CIRCUIT MEANS INCLUDING PHASE DETECTOR MEANS, ALL ARRANGED IN CASCADE; SAID MIXER MEANS RESPONSIVE TO THE OUTPUT SIGNAL OF SAID VARIABLE CONTROLLED OSCILLATOR AND SAID SPECTRUM GENERATOR TO PRODUCE A SPECTRUM OF BEAT FREQUENCY SIGNALS; SAID CIRCUIT MEANS RESPONSIVE TO SAID SECOND SIGNAL AND THE BEAT FREQUENCY OUTPUT SIGNALS OF SAID MIXER MEANS HAVING A FREQUENCY AT OR NEAR F, TO PRODUCE A SECOND OUTPUT SIGNAL FOR CONTROLLING THE PHASE OF THE OUTPUT SIGNAL OF SAID VARIABLE CONTROLLED OSCILLATOR MEANS.
Claim 2
Dependent Claim
153 words
A PHASE-LOCKED FREQUENCY MULTIPLIER COMPRISING: MEANS FOR PRODUCING FIRST AND SECOND SIGNALS OF FREQUENCY F AND SEPARATED IN PHASE BY AN ANGLE A, WHERE A IS ANY ANGLE LYING WITHIN THE RANGES OF N90* +-60*, WHERE N IS AN ODD INTEGER; SPECTRUM GENERATOR MEANS RESPONSIVE TO SAID FIRST SIGNAL TO PRODUCE A SPECTRUM OF HARMONICS OF SAID FREQUENCY F; FEEDBACK LOOP MEANS COMPRISING VARIABLE CONTROLLED OSCILLATOR MEANS, MIXER MEANS, FIRST FILTER MEANS, AND CIRCUIT MEANS INCLUDING PHASE DETECTOR MEANS, ALL ARRANGED IN CASCADE; SAID MIXER MEANS RESPONSIVE TO THE OUTPUT SIGNAL OF SAID VARIABLE CONTROLLED OSCILLATOR AND SAID SPECTRUM GENERATOR TO PRODUCE A SPECTRUM OF BEAT FREQUENCY SIGNALS; SAID CIRCUIT MEANS RESPONSIVE TO SAID SECOND SIGNAL AND THE BEAT FREQUENCY OUTPUT SIGNALS OF SAID MIXER MEANS HAVING A FREQUENCY AT OR NEAR F, TO PRODUCE A SECOND OUTPUT SIGNAL FOR CONTROLLING THE PHASE OF THE OUTPUT SIGNAL OF SAID VARIABLE CONTROLLED OSCILLATOR MEANS.
References Cited (Backward Citations)
US3136956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |