US3281679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modulated subcarrier system for measuring attenuation and phase shift
Assignee: Individual
•
Filing: 1965-05-11
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Granted: 1966-10-25
•
Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 George E Schafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:35
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/46; H04B3/462; H04B3/466
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A SYSTEM FOR MEASURING THE ATTENUATION AND/OR PHASE OF A TEST COMPONENT, A FIRST SIGNAL SOURCE PROVIDING A CONTINUOUS WAVE CARRIER DEFINED BY A COS WCT, WHERE AC REPRESENTS THE AMPLITUDE AND WC THE ANGULAR FREQUENCY OF SAID CARRIER, A FIRST CHANNEL INCLUDING A VARIABLE PHASE SHIFTER, MEANS FOR APPLYING SAID CARRIER TO THE INPUT OF SAID FIRST CHANNEL, WHEREBY THE OUTPUT OF SAID FIRST CHANNEL COMPRISES A SIGNAL DEFINED BY EC COS (WCT+$$, WHERE EC IS THE AMPLITUDE OF THE CARRIER AFTER PASSING THROUGH SAID CHANNEL AND $ REPRESENTS THE SHIFT IN THE PHASE OF SAID CARRIER EFFECTED BY SAID PHASE SHIFTER, A SECOND CHANNEL INCLUDING AMPLITUDE MODULATING MEANS
Claim 2
Dependent Claim
111 words
IN A SYSTEM FOR MEASURING THE ATTENUATION AND/OR PHASE OF A TEST COMPONENT, A FIRST SIGNAL SOURCE PROVIDING A CONTINUOUS WAVE CARRIER DEFINED BY A COS WCT, WHERE AC REPRESENTS THE AMPLITUDE AND WC THE ANGULAR FREQUENCY OF SAID CARRIER, A FIRST CHANNEL INCLUDING A VARIABLE PHASE SHIFTER, MEANS FOR APPLYING SAID CARRIER TO THE INPUT OF SAID FIRST CHANNEL, WHEREBY THE OUTPUT OF SAID FIRST CHANNEL COMPRISES A SIGNAL DEFINED BY EC COS (WCT+$$, WHERE EC IS THE AMPLITUDE OF THE CARRIER AFTER PASSING THROUGH SAID CHANNEL AND $ REPRESENTS THE SHIFT IN THE PHASE OF SAID CARRIER EFFECTED BY SAID PHASE SHIFTER, A SECOND CHANNEL INCLUDING AMPLITUDE MODULATING MEANS
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |