Patent US3268807A successfully refreshed from Google Patents.
US3268807A
Expired / Lapsed
US
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Instrumentation for displaying characteristics of electromagnetic wave devices
Assignee: DIELECTRIC PRODUCTS ENGINEERIN
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Filing: 1961-03-20
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Granted: 1966-08-23
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Expires: 1981-03-20
Abstract
No abstract record available.
Inventors
- 👤 Edward H Shively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:54
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/03; G; G01; G01R; G01R27/00; G01R27/02; G01R27/28; G01R27/32; H04R; H04R1/00; H04R1/20; H04R1/22; H04R7/00; H04R7/02; H04R7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
APPARATUS FOR MEASURING THE REFLECTION COEFFICIENT OF AN ELECTROMAGNETIC WAVE LOAD COMPRISING IN COMBINATION MEANS FOR APPLYING TO SAID LOAD AND SAID IMPEDANCE, MEANS FOR APPLYING TO SAID LOAD AND SAID CHARACTERISTIC IMPEDANCE AN RF SIGNAL OF CONSTANT AMPLITUDE SO THAT A ZERO REFLECTION VOLTAGE REFERENCE POINT AND A REFLECTED SIGNAL FROM SAID LOAD ARE PROVIDED, PHASE SHIFT MEANS TO ESTABLISH FOUR REFERENCE POINTS WHICH DEFINE TWO VOLTAGE REFERENCE PLANES IN QUADRATURE OF ONE ANOTHER WHICH INTERSECT AT SAID ZERO REFLECTION REFERENCE POINT, AND MEANS TO DERIVE SIGNAL VOLTAGES REFERENCED TO SAID VOLTAGE REFERENCE PLANES WHICH ARE INDICATIVE OF THE PHASE AND MAGNITUDE OF THE REFLECTION COEFFICIENT OF SAID ELECTROMAGNETIC WAVE LOAD.
Claim 2
Dependent Claim
112 words
APPARATUS FOR MEASURING THE REFLECTION COEFFICIENT OF AN ELECTROMAGNETIC WAVE LOAD COMPRISING IN COMBINATION MEANS FOR APPLYING TO SAID LOAD AND SAID IMPEDANCE, MEANS FOR APPLYING TO SAID LOAD AND SAID CHARACTERISTIC IMPEDANCE AN RF SIGNAL OF CONSTANT AMPLITUDE SO THAT A ZERO REFLECTION VOLTAGE REFERENCE POINT AND A REFLECTED SIGNAL FROM SAID LOAD ARE PROVIDED, PHASE SHIFT MEANS TO ESTABLISH FOUR REFERENCE POINTS WHICH DEFINE TWO VOLTAGE REFERENCE PLANES IN QUADRATURE OF ONE ANOTHER WHICH INTERSECT AT SAID ZERO REFLECTION REFERENCE POINT, AND MEANS TO DERIVE SIGNAL VOLTAGES REFERENCED TO SAID VOLTAGE REFERENCE PLANES WHICH ARE INDICATIVE OF THE PHASE AND MAGNITUDE OF THE REFLECTION COEFFICIENT OF SAID ELECTROMAGNETIC WAVE LOAD.
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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) | 1969-08-22 | 1970-02-21 | 1970-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-22 | 1974-02-21 | 1974-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-22 | 1978-02-21 | 1978-08-23 | $7700.00 | Window Closed / Lapsed |