US3233194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single sideboard suppressed carrier modulators
Assignee: Individual
•
Filing: 1962-03-08
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Granted: 1966-02-01
•
Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Alford Andrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
H; H03; H03C; H03C1/00; H03C1/52; H03C1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A MODULATION SYSTEM COMPRISING, A SOURCE OF A SIGNAL OF CARRIER FREQUENCY, A SOURCE OF A SIGNAL OF MODULATING FREQUENCY, FIRST AND SECOND BALANCED MODULATORS COUPLED TO SAID SOURCES FOR MODULATING SAID CARRIER FREQUENCY SIGNAL WITH SAID MODULATING FREQUENCY SIGNAL TO PROVIDE FIRST AND SECOND BALANCED MODULATED SIGNALS RESPECTIVELY, A HYBRID HAVING FIRST AND SECOND SIDE BRANCHES, A SERIES BRANCH AND A PARALLEL BRANCH, FIRST MEANS FOR COUPLING THE OUTPUT OF SAID FIRST BALANCED MODULATOR TO SAID FIRST SIDE BRANCH, MEANS FOR COUPLING THE OUTPUT OF SAID SECOND BALANCED MODULATOR TO SAID SECOND SIDE BRANCH, AND MEANS FOR ESTABLISHING THE EFFECTIVE ELECTRICAL LENGTH FROM SAID CARRIER FREQUENCY SIGNAL SOURCE TO SAID FIRST SIDE BRANCH DIFFERING FROM THE EFFECTIVE ELECTRICAL LENGTH BETWEEN SAID CARRIER FREQUENCY SIGNAL SOURCE AND SAID SECOND SIDE BRANCH BY AN ODD MULTIPLE OF QUARTER WAVELENGTHS AT SAID MODULATING FREQUENCY.
Claim 2
Dependent Claim
142 words
A MODULATION SYSTEM COMPRISING, A SOURCE OF A SIGNAL OF CARRIER FREQUENCY, A SOURCE OF A SIGNAL OF MODULATING FREQUENCY, FIRST AND SECOND BALANCED MODULATORS COUPLED TO SAID SOURCES FOR MODULATING SAID CARRIER FREQUENCY SIGNAL WITH SAID MODULATING FREQUENCY SIGNAL TO PROVIDE FIRST AND SECOND BALANCED MODULATED SIGNALS RESPECTIVELY, A HYBRID HAVING FIRST AND SECOND SIDE BRANCHES, A SERIES BRANCH AND A PARALLEL BRANCH, FIRST MEANS FOR COUPLING THE OUTPUT OF SAID FIRST BALANCED MODULATOR TO SAID FIRST SIDE BRANCH, MEANS FOR COUPLING THE OUTPUT OF SAID SECOND BALANCED MODULATOR TO SAID SECOND SIDE BRANCH, AND MEANS FOR ESTABLISHING THE EFFECTIVE ELECTRICAL LENGTH FROM SAID CARRIER FREQUENCY SIGNAL SOURCE TO SAID FIRST SIDE BRANCH DIFFERING FROM THE EFFECTIVE ELECTRICAL LENGTH BETWEEN SAID CARRIER FREQUENCY SIGNAL SOURCE AND SAID SECOND SIDE BRANCH BY AN ODD MULTIPLE OF QUARTER WAVELENGTHS AT SAID MODULATING FREQUENCY.
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |