Patent US3559110A successfully refreshed from Google Patents.
US3559110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional coupler
Assignee: TE Connectivity Corp
•
Filing: 1965-11-12
•
Granted: 1971-01-26
•
Expires: 1985-11-12
Abstract
Abstract A DIRECTIONAL COUPLER IS DISCLOSED WHICH INCLUDES A FIRST RRANSFORMER HAVING ITS PRIMARY IN SERIES WITH A TRANSMISSION LINE AND ITS SECONDARY OF N1 TURNS CONNECTED DIRECTLY BETWEEN GROUND AND A TAP TO PROVIDE A SAMPLE SIGNAL OUTPUT. AN AUTO-TRANSFORMER IS CONNECTED BETWEEN THE INPUT OF THE COUPLER AND GROUND AND HAS N2 TURNS. AN OUTPUT IS PROVIDED FROM THE AUTO-TRANSFORMER THROUGH A RESISTANCE TO THE TAP AND THE TRANSFORMER TURNS N1 AND N2 HAVE A RELATIONSHIP SO THAT CURRENT COMPONENTS OF TRANSMITTED SIGNALS ARE EFFECTIVELY ADDED TO PROVIDE AN OUTPUT SAMPLE SIGNAL AND CURRENT COMPONENTS RESULTING FROM REFLECTED SIGNALS CANCEL EACH OTHER.
Inventors
- 👤 Lawrence Grebe Wiley
- 👤 William Dean Couper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:42
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/48; H03H7/482
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |