Patent US3742375A successfully refreshed from Google Patents.
US3742375A
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Continuously variable delay line
Assignee: United States Department of the Navy
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Filing: 1972-05-25
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Granted: 1973-06-26
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Expires: 1992-05-25
Abstract
Abstract Microwave information is applied to a LiNbO3 crystal by way of a thin film transducer, and is then convolved with an ultrasonic delta -function. The delta -function is generated by a laser beam and is applied to the crystal at a particular point. The point at which the delta -function is applied to the crystals affects the convolved signal such that the original microwave information may be delayed by a particular amount of time. The delay time is a function of the laser position and as a result may be made to vary. Also, since the principles of convolution are employed, the delayed microwave information will also be amplified.
Inventors
- 👤 O Farah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:27
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/30; H03H9/38
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
A continuously variable microwave delay line comprising: means for splitting a microwave signal into a first and a second part; means for triggering a high powered ruby laser by the use of said first part; transducer means for transforming said second part into acoustical energy being physically attached to crystal means for propagating said acoustical energy; movable optical focusing means for focusing the energy from said ruby laser into said crystal means at a distance d from said transducer means to propagate a second burst or acoustical energy such that an acoustical convolution results in said crystal to produce a signal which is delayed from said second part.
Claim 2
Dependent Claim
108 words
A continuously variable microwave delay line comprising: means for splitting a microwave signal into a first and a second part; means for triggering a high powered ruby laser by the use of said first part; transducer means for transforming said second part into acoustical energy being physically attached to crystal means for propagating said acoustical energy; movable optical focusing means for focusing the energy from said ruby laser into said crystal means at a distance d from said transducer means to propagate a second burst or acoustical energy such that an acoustical convolution results in said crystal to produce a signal which is delayed from said second part.
Claim 3
Dependent Claim
15 words
The device is claimed in claim 1 wherein said crystal means is a LiNbO3 crystal.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |