US3188483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feedback transistor modulator for frequency division and frequency multiplication
Assignee: Siemens and Halske AG
•
Filing: 1959-12-15
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Granted: 1965-06-08
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Expires: 1979-12-15
Abstract
No abstract record available.
Inventors
- 👤 Steiner Erhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:50
CPC Classifications
H; H03; H03B; H03B21/00; H03B21/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
CIRCUIT ARRANGEMENT FOR EFFECTING FREQUENCY DIVISION AND FREQUENCY MULTIPLICATION IN A PREDETERMINED RATIONAL RELATION BY THE USE OF A FEEDBACK MODULATOR IN WHICH IS FORMED THE DIFFERENCE FROM THE FREQUENCY TO BE DIVIDED AND A HARMONIC OF THE DIVIDED FREQUENCY, COMPRISING TWO TRANSISTOR OPERATING IN PUSH-PULL RELATION, MEANS CONNECTED BETWEEN THE BASE ELECTRODES OF SAID TRANSISTORS IN PUSHPULL ARRANGEMENT AND FORMING A RESONANCE CIRCUIT TUNED TO THE DIVIDED FREQUENCY, MEANS FOR CONDUCTING TO THE EMITTER AND BASE ELECTRODES IN PHASE THE CONTROL CURRENTS WITH THE FREQUENCY TO BE DIVIDED WHILE, IN COOPERATION WITH SAID RESONANCE CIRCUIT, CONDUCTING TO SAID TARANSISTORS IN OPPOSED PHASE THE FEEDBACK CURRENTS WITH THE DIVIDED FREQUENCY, AND MEANS FOR OBTAINING FROM THE COLLECTORS OF SAID TRANSISTORS THE OUTPUT CURRENT WITH THE DIVIDED FREQUENCY AND THE HARMONIC FREQUENCIES THEREOF.
Claim 2
Dependent Claim
132 words
CIRCUIT ARRANGEMENT FOR EFFECTING FREQUENCY DIVISION AND FREQUENCY MULTIPLICATION IN A PREDETERMINED RATIONAL RELATION BY THE USE OF A FEEDBACK MODULATOR IN WHICH IS FORMED THE DIFFERENCE FROM THE FREQUENCY TO BE DIVIDED AND A HARMONIC OF THE DIVIDED FREQUENCY, COMPRISING TWO TRANSISTOR OPERATING IN PUSH-PULL RELATION, MEANS CONNECTED BETWEEN THE BASE ELECTRODES OF SAID TRANSISTORS IN PUSHPULL ARRANGEMENT AND FORMING A RESONANCE CIRCUIT TUNED TO THE DIVIDED FREQUENCY, MEANS FOR CONDUCTING TO THE EMITTER AND BASE ELECTRODES IN PHASE THE CONTROL CURRENTS WITH THE FREQUENCY TO BE DIVIDED WHILE, IN COOPERATION WITH SAID RESONANCE CIRCUIT, CONDUCTING TO SAID TARANSISTORS IN OPPOSED PHASE THE FEEDBACK CURRENTS WITH THE DIVIDED FREQUENCY, AND MEANS FOR OBTAINING FROM THE COLLECTORS OF SAID TRANSISTORS THE OUTPUT CURRENT WITH THE DIVIDED FREQUENCY AND THE HARMONIC FREQUENCIES THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |