US3225316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase-shift single side-band modulators
Assignee: Associated Electrical Industries Ltd
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Filing: 1961-11-27
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Granted: 1965-12-21
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Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 Saraga Wolja
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:24
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/02; H04L27/04; H03; H03C; H03C1/00; H03C1/52; H03C1/60; H04B; H04B1/00; H04B1/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A MODULATION CIRCUIT ARRANGEMENT COMPRISING A FIRST COMBINING CIRCUIT CONNECTED TO RECEIVE A CARRIER OSCILLATION SIGNAL AND AN ALTERNATING CURRENT SIGNAL TO BE FREQUENCY TRANSLATED AND OPERABLE TO PRODUCE A FIRST COMBINATION SIGNAL COMPOSED OF SAID CARRIER OSCILLATION SIGNAL AND ALTERNATING CURRENT SIGNAL; A SECOND COMBINING CIRCUIT CONNECTED TO RECEIVE SAID CARRIER OSCILLATION SIGNAL AND SAID ALTERNATING CURRENT SIGNAL EACH PHASE DISPLACED WITH RESPECT TO THE CORRESPNDING SIGNAL AS RECEIVED BY THE FIRST COMBINING CIRCUIT, SAID SECOND COMBINING CIRCUIT BEING OPERABLE TO PRODUCE A SECOND COMBINATION SIGNAL COMPOSED OF SAID CARRIER OSCILLATION SIGNAL AND ALTERNATING CURRENT SIGNAL; PHASE SHIFTING MEANS FOR GIVING TO SAID ALTERNATING CURRENT SIGNAL AS RECEIVED BY THE TWO COMBINING CIRCUITS AND ALSO TO THE CARRIER OSCILLATION SIGNAL AS RECEIVED THEREBY A SELECTED PHASE DIFFERENCE; AND MULTIPLYING MEANS CONNECTED TO RECEIVE SAID FIRST AND SECOND COMBINATION SIGNALS AND OPERABLE TO MULTIPLY THEM TOGETHER, THE AMPLITUDES AND PHASE DIFFERENCES OF SAID CARRIER OSCILLATION SIGNAL AND ALTERNATING CURRENT SIGNAL GIVING A RESULTANT OUTPUT SIGNAL FROM THE MULTIPLYING MEANS CONTAINING FREQUENCY COMPONENTS CORRESPONDIGN TO FREQUENCIES OF ONE SIDE-BAND OF THE MODULATION PRODUCT OF SAID CARRIER OSCILLATION SIGNAL AND SAID ALTERNATING CURRENT SIGNAL.
Claim 2
Dependent Claim
192 words
A MODULATION CIRCUIT ARRANGEMENT COMPRISING A FIRST COMBINING CIRCUIT CONNECTED TO RECEIVE A CARRIER OSCILLATION SIGNAL AND AN ALTERNATING CURRENT SIGNAL TO BE FREQUENCY TRANSLATED AND OPERABLE TO PRODUCE A FIRST COMBINATION SIGNAL COMPOSED OF SAID CARRIER OSCILLATION SIGNAL AND ALTERNATING CURRENT SIGNAL; A SECOND COMBINING CIRCUIT CONNECTED TO RECEIVE SAID CARRIER OSCILLATION SIGNAL AND SAID ALTERNATING CURRENT SIGNAL EACH PHASE DISPLACED WITH RESPECT TO THE CORRESPNDING SIGNAL AS RECEIVED BY THE FIRST COMBINING CIRCUIT, SAID SECOND COMBINING CIRCUIT BEING OPERABLE TO PRODUCE A SECOND COMBINATION SIGNAL COMPOSED OF SAID CARRIER OSCILLATION SIGNAL AND ALTERNATING CURRENT SIGNAL; PHASE SHIFTING MEANS FOR GIVING TO SAID ALTERNATING CURRENT SIGNAL AS RECEIVED BY THE TWO COMBINING CIRCUITS AND ALSO TO THE CARRIER OSCILLATION SIGNAL AS RECEIVED THEREBY A SELECTED PHASE DIFFERENCE; AND MULTIPLYING MEANS CONNECTED TO RECEIVE SAID FIRST AND SECOND COMBINATION SIGNALS AND OPERABLE TO MULTIPLY THEM TOGETHER, THE AMPLITUDES AND PHASE DIFFERENCES OF SAID CARRIER OSCILLATION SIGNAL AND ALTERNATING CURRENT SIGNAL GIVING A RESULTANT OUTPUT SIGNAL FROM THE MULTIPLYING MEANS CONTAINING FREQUENCY COMPONENTS CORRESPONDIGN TO FREQUENCIES OF ONE SIDE-BAND OF THE MODULATION PRODUCT OF SAID CARRIER OSCILLATION SIGNAL AND SAID ALTERNATING CURRENT SIGNAL.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |