US3660786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensated delay line
Assignee: Sprague Electric Co
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Filing: 1970-08-20
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Granted: 1972-05-02
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Expires: 1990-08-20
Abstract
Abstract A delay line having additional compensation for output phase distortion and output pulse top ringing which includes a first feedback capacitor connected to the input lead and bridging the first three inductive coil sections of the delay line, with a series of successive feedback capacitors connecting each consecutive coil interconnection point and bridging the three inductive coil sections immediately following the coil interconnection point.
Inventors
- 👤 George A Senf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:50
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30; H03H7/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
186 words
A delay line comprising a plurality of inductive coil sections connected in series, an input lead connected to one end of said series and an output lead connected to the other end of said series, a plurality of capacitor sections each connected from one of said series connections to the other side of the line, said capacitor sections including a dielectric sheet having a single conductive element on one surface and a plurality of separate conductive elements on the opposite surface forming individual capacitor sections, the edge surface of each of a plurality of said separate conductive elements being in close capacitive coupling with the edge surface of the third succeeding of said separate conductive elements establishing a distributed capacitance therebetween which acts as a feedback capacitor, each of said distributed feedback capacitors bridges three of said inductive coil sections with the first feedback capacitor connected to said input lead and bridging the first three inductive coil sections of said line, each successive feedback capacitor connected to each consecutive of said coil series connections and bridging the three inductive coil sections immediately following the coil connection.
Claim 2
Dependent Claim
186 words
A delay line comprising a plurality of inductive coil sections connected in series, an input lead connected to one end of said series and an output lead connected to the other end of said series, a plurality of capacitor sections each connected from one of said series connections to the other side of the line, said capacitor sections including a dielectric sheet having a single conductive element on one surface and a plurality of separate conductive elements on the opposite surface forming individual capacitor sections, the edge surface of each of a plurality of said separate conductive elements being in close capacitive coupling with the edge surface of the third succeeding of said separate conductive elements establishing a distributed capacitance therebetween which acts as a feedback capacitor, each of said distributed feedback capacitors bridges three of said inductive coil sections with the first feedback capacitor connected to said input lead and bridging the first three inductive coil sections of said line, each successive feedback capacitor connected to each consecutive of said coil series connections and bridging the three inductive coil sections immediately following the coil connection.
Claim 3
Dependent Claim
40 words
The delay line of claim 1 wherein the total value of said feedback capacitors is approximately 10 percent of the value of one capacitor section and each feedback capacitor has a value in the order of 2 to 4 pf.
Claim 4
Dependent Claim
18 words
The delay line of claim 1 wherein said feedback capacitors are ends of enameled magnet wire twisted together.
Claim 5
Dependent Claim
28 words
The capacitor of claim 1 wherein the value of distributed feedback capacitance is determined by the length of the edge surface of each plate in capacitive coupling relation.
Claim 6
Dependent Claim
70 words
The delay line of claim 4 comprising a stacked structure of three dielectric layers, each insulatively isolated from the other, wherein the first dielectric layer includes the first capacitor section and every succeeding third capacitor section thereafter, the second dielectric layer includes the second capacitor section and every succeeding third capacitor section thereafter, and the third dielectric layer includes the third capacitor section and every succeeding third capacitor section thereafter.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |