US3351853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic noise figure meter
Assignee: Individual
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Filing: 1964-02-17
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Granted: 1967-11-07
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Expires: 1984-02-17
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
G; G01; G01R; G01R29/00; G01R29/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
AN AUTOMATIC NOISE FIGURE METER FOR MICROWAVE SYSTEMS COMPRISING: AN INPUT; A RADIO FREQUENCY SOURCE INCLUDING MICROWAVE SYSTEM NOISE COUPLED TO APPLY RADIO FREQUENCY SIGNALS TO SAID INPUT; A NOISE SIGNAL SOURCE COUPLED TO APPLY NOISE SIGNALS TO SAID INPUT; A DETECTOR MEANS COUPLED TO SAID INPUT TO DETECT SAID RADIO FREQUENCY WITH SAID SYSTEM NOISE AND SAID NOISE SIGNALS; A COMPARATOR COUPLED TO RECEIVE DETECTED RADIO FREQUENCY WITH SYSTEM NOISE SIGNALS FROM SAID DETECTOR AND TO RECEIVE DETECTED RADIO FREQUENCY SIGNALS WITH SYSTEM NOISE AND DETECTED NOISE SIGNAL FROM SAID NOISE SOURCE; SWITCHING MEANS COUPLED TO SAID NOISE SIGNAL SOURCE AND BETWEEN SAID DETECTOR AND COMPARATOR TO SWITCH SAID NOISE SIGNAL SOURCE "ON" AND "OFF" SIMULTANEOUSLY WITH SWITCHING OF THE DETECTED FREQUENCY SIGNALS WITH SYSTEM NOISE AND THE DETECTED FREQUENCY SIGNALS WITH SYSTEM NOISE AND SAID DETECTED NOISE SIGNALS TO SAID COMPARATOR; AND A MEANS INDICATING THE COMPARATOR OUTPUT TO PRODUCE A NOISE FIGURE OF THE NOISE IN THE MICROWAVE SYSTEM.
Claim 2
Dependent Claim
162 words
AN AUTOMATIC NOISE FIGURE METER FOR MICROWAVE SYSTEMS COMPRISING: AN INPUT; A RADIO FREQUENCY SOURCE INCLUDING MICROWAVE SYSTEM NOISE COUPLED TO APPLY RADIO FREQUENCY SIGNALS TO SAID INPUT; A NOISE SIGNAL SOURCE COUPLED TO APPLY NOISE SIGNALS TO SAID INPUT; A DETECTOR MEANS COUPLED TO SAID INPUT TO DETECT SAID RADIO FREQUENCY WITH SAID SYSTEM NOISE AND SAID NOISE SIGNALS; A COMPARATOR COUPLED TO RECEIVE DETECTED RADIO FREQUENCY WITH SYSTEM NOISE SIGNALS FROM SAID DETECTOR AND TO RECEIVE DETECTED RADIO FREQUENCY SIGNALS WITH SYSTEM NOISE AND DETECTED NOISE SIGNAL FROM SAID NOISE SOURCE; SWITCHING MEANS COUPLED TO SAID NOISE SIGNAL SOURCE AND BETWEEN SAID DETECTOR AND COMPARATOR TO SWITCH SAID NOISE SIGNAL SOURCE "ON" AND "OFF" SIMULTANEOUSLY WITH SWITCHING OF THE DETECTED FREQUENCY SIGNALS WITH SYSTEM NOISE AND THE DETECTED FREQUENCY SIGNALS WITH SYSTEM NOISE AND SAID DETECTED NOISE SIGNALS TO SAID COMPARATOR; AND A MEANS INDICATING THE COMPARATOR OUTPUT TO PRODUCE A NOISE FIGURE OF THE NOISE IN THE MICROWAVE SYSTEM.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |