US3839698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer compensation network
Assignee: Raytheon Co
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Filing: 1973-05-29
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Granted: 1974-10-01
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Expires: 1993-05-29
Abstract
Abstract Circuitry for coupling sonar transducers to a signal generator, the circuitry comprising inductive elements for resonating with a capacitor of the equivalent circuit of each segment of the sonar transducer. In alternate segments, the inductive element is coupled serially between the signal generator and the transducer segment, while in the remaining transducer segment, the inductive element is coupled in parallel with the terminals of the transducer segment. This provides for a compensation of any changes in the transducer characteristics affecting the electrical equivalent circuit of the transducer segments since a shift in capacitance in the serially tuned circuits provides a reactance change of opposite sign to the reactance change occurring in the parallel tuned circuits thereby minimizing any impedance changes presented to the terminals of the signal generator.
Inventors
- 👤 S Ehrlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:11
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
217 words
A transducer system comprising: a plurality of transducer segments, each of which comprises electrodes for coupling electrical signals to the transducer segments; at least one first inductor and at least one second inductor, each of said first inductors being coupled to individual ones of the transducer segments in a group of said plurality of transducer segments, each of said second inductors being coupled to individual ones of the remaining ones of said transducer segments; said first inductors being coupled in parallel to the electrodes of the individual ones of the transducer segments in said group of transducer segments; said second inductors being coupled in series with the electrodes of said remaining ones of said transducer segments; and at least one transformer corresponding to each of said first inductors, each of said transformers having a first winding and a second winding, said first winding in each of said transformers being coupled in parallel with respective ones of said first inductors, said second winding in each of said transformers being coupled in series with respective ones of said second inductors, each of said transformers having a turns ratio of said first winding to said second winding suitable for compensating changes in reactance associated with each interconnection of said first inductor and said second inductor with its respective transducer segment.
Claim 2
Dependent Claim
217 words
A transducer system comprising: a plurality of transducer segments, each of which comprises electrodes for coupling electrical signals to the transducer segments; at least one first inductor and at least one second inductor, each of said first inductors being coupled to individual ones of the transducer segments in a group of said plurality of transducer segments, each of said second inductors being coupled to individual ones of the remaining ones of said transducer segments; said first inductors being coupled in parallel to the electrodes of the individual ones of the transducer segments in said group of transducer segments; said second inductors being coupled in series with the electrodes of said remaining ones of said transducer segments; and at least one transformer corresponding to each of said first inductors, each of said transformers having a first winding and a second winding, said first winding in each of said transformers being coupled in parallel with respective ones of said first inductors, said second winding in each of said transformers being coupled in series with respective ones of said second inductors, each of said transformers having a turns ratio of said first winding to said second winding suitable for compensating changes in reactance associated with each interconnection of said first inductor and said second inductor with its respective transducer segment.
Claim 3
Dependent Claim
38 words
A system according to claim 1 wherein said transformer increases the voltage appearing across one of said first inductors relative to the voltage appearing across the serial combination of one of said second inductors and its transducer segment.
Claim 4
Dependent Claim
52 words
A system according to claim 2 wherein said segments are coupled in pairs, each of said pairs including a segment coupled to one of said first inductors and a segment coupled to one of said second inductors, an input of said transformer being serially connected with said second inductor of said pair.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |