Patent US3325816A successfully refreshed from Google Patents.
US3325816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sidelobe suppressing antenna system comprising directional coupler and phase controlmeans for beam shaping
Assignee: BAE Systems Electronics Ltd
•
Filing: 1964-07-24
•
Granted: 1967-06-13
•
Expires: 1984-07-24
Abstract
No abstract record available.
Inventors
- 👤 Dutton Frank Allwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:14
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q25/002; G; G01; G01S; G01S1/00; G01S1/02; G01S13/00; G01S13/74; G01S13/76; G01S13/762
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A SLIDELOBE SUPPRESSING AERIAL SYSTEM COMPRISING A FEEDER LEADING TO A PORTION OF SAID ARRAY, SAID PORTION COMPRISING AT LEAST ONE OF SAID ELEMENTS, A SECOND FEEDER LEADPRISING AT LEAST ONE OF SAID ELEMENTS, A SECOND FEEDER LEADING TO THE OTHER ELEMENTS OF THE ARRAY, DIRECTIONAL COUPLER MEANS HAVING FIRST AND SECOND INPUT TERMINALS AND FIRST AND SECOND OUTPUT TERMINALS AND COUPLING THE TWO FEEDERS, SAID COUPLER PROVIDING MORE POWER TO SAID FIRST FEEDER THAN TO SAID SECOND FEEDER WHEN AN INPUT IS FED TO SAID FIRST INPUT TERMINAL, MEANS FOR PROVIDING AN IN-PHASE RELATIONSHIP BETWEEN THE INPUT TO ALL OF SAID AERIAL ELEMENTS OF THE ARRAY WHEN AN INPUT IS FED TO SAID FIRST INPUT TERMINAL, AND FOR PROVIDING A PHASE OPPOSITION RELATIONSHIP BETWEEN THE INPUT TO SAID PORTION AND THE INPUT TO SAID OTHER ELEMENTS IN THE ARRAY WHEN AN INPUT IS FED TO SAID SECOND INPUT TERMINAL.
Claim 2
Dependent Claim
150 words
A SLIDELOBE SUPPRESSING AERIAL SYSTEM COMPRISING A FEEDER LEADING TO A PORTION OF SAID ARRAY, SAID PORTION COMPRISING AT LEAST ONE OF SAID ELEMENTS, A SECOND FEEDER LEADPRISING AT LEAST ONE OF SAID ELEMENTS, A SECOND FEEDER LEADING TO THE OTHER ELEMENTS OF THE ARRAY, DIRECTIONAL COUPLER MEANS HAVING FIRST AND SECOND INPUT TERMINALS AND FIRST AND SECOND OUTPUT TERMINALS AND COUPLING THE TWO FEEDERS, SAID COUPLER PROVIDING MORE POWER TO SAID FIRST FEEDER THAN TO SAID SECOND FEEDER WHEN AN INPUT IS FED TO SAID FIRST INPUT TERMINAL, MEANS FOR PROVIDING AN IN-PHASE RELATIONSHIP BETWEEN THE INPUT TO ALL OF SAID AERIAL ELEMENTS OF THE ARRAY WHEN AN INPUT IS FED TO SAID FIRST INPUT TERMINAL, AND FOR PROVIDING A PHASE OPPOSITION RELATIONSHIP BETWEEN THE INPUT TO SAID PORTION AND THE INPUT TO SAID OTHER ELEMENTS IN THE ARRAY WHEN AN INPUT IS FED TO SAID SECOND INPUT TERMINAL.
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) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |