US3195070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide band signal source system
Assignee: Westinghouse Electric Corp
•
Filing: 1961-09-06
•
Granted: 1965-07-13
•
Expires: 1981-09-06
Abstract
No abstract record available.
Inventors
- 👤 Irving F Barditch
- 👤 Charles G Brooks
- 👤 Roland G Lascola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:11
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B2200/00; H03B2200/003; H03B2200/0034; H03B2200/006; H03B2200/007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A WIDE BAND SOURCE OF RADIO FREQUENCY COMPRISING A PLURALITY OF SEMICONDUCTOR SIGNAL TRANSLATION STAGES CONNECTED IN CASCADE, EACH OF SAID STAGES INCLUDING A TRANSISTOR CONNECTED AS A GROUNDED EMITTER AND DISTRIBUTED RC MEANS FOR SHIFTING THE PHASE OF A SELECTED BAND OF FREQUENCIES BY 360* BETWEEN THE INPUT AND THE OUTPUT OF THE RESPECTIVE STAGES, ALL OF SAID STAGES HAVING A FEEDBACK CIRCUIT BETWEEN THE INPUT AND THE OUTPUT OF THE STAGE TO PROVIDE SELECTIVE REGENERATIVE FEEDBACK FOR THE SELECTED BAND OF FREQUENCIES, THE FEEDBACK CIRCUIT OF SAID FIRST STAGE INCLUDING A PIEZOELECTRIC CRYSTAL FOR PROVIDING A LOW IMPEDANCE PATH FOR SIGNALS OF THE SERIESRESONANT FREQUENCY OF SAID CRYSTAL, EACH OF THE OTHER STAGES BEING TUNED TO DIFFERENT FREQUENCY BANDS THE RESPECTIVE CENTER FREQUENCIES OF WHICH ARE DISPLACED FROM EACH OTHER BUT HAVE THEIR GAIN-VS.-FREQUENCY RESPONSE CHARACTERISTICS OVERLAPPING TO PROVIDE THE EFFECT OF A BANDPASS CHARACTERISTIC.
Claim 2
Dependent Claim
147 words
A WIDE BAND SOURCE OF RADIO FREQUENCY COMPRISING A PLURALITY OF SEMICONDUCTOR SIGNAL TRANSLATION STAGES CONNECTED IN CASCADE, EACH OF SAID STAGES INCLUDING A TRANSISTOR CONNECTED AS A GROUNDED EMITTER AND DISTRIBUTED RC MEANS FOR SHIFTING THE PHASE OF A SELECTED BAND OF FREQUENCIES BY 360* BETWEEN THE INPUT AND THE OUTPUT OF THE RESPECTIVE STAGES, ALL OF SAID STAGES HAVING A FEEDBACK CIRCUIT BETWEEN THE INPUT AND THE OUTPUT OF THE STAGE TO PROVIDE SELECTIVE REGENERATIVE FEEDBACK FOR THE SELECTED BAND OF FREQUENCIES, THE FEEDBACK CIRCUIT OF SAID FIRST STAGE INCLUDING A PIEZOELECTRIC CRYSTAL FOR PROVIDING A LOW IMPEDANCE PATH FOR SIGNALS OF THE SERIESRESONANT FREQUENCY OF SAID CRYSTAL, EACH OF THE OTHER STAGES BEING TUNED TO DIFFERENT FREQUENCY BANDS THE RESPECTIVE CENTER FREQUENCIES OF WHICH ARE DISPLACED FROM EACH OTHER BUT HAVE THEIR GAIN-VS.-FREQUENCY RESPONSE CHARACTERISTICS OVERLAPPING TO PROVIDE THE EFFECT OF A BANDPASS CHARACTERISTIC.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |