Patent US3560986A successfully refreshed from Google Patents.
US3560986A
Expired / Lapsed
US
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Radar antenna radome construction
Assignee: Brunswick Corp
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Filing: 1969-02-24
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Granted: 1971-02-02
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Expires: 1989-02-24
Abstract
Abstract A RADAR ANTENNA RADOME CONSTRUCTION DEFINING AN ELECTROMAGNETIC WINDOW FOR TRANSMITTING PRESELECTED MICROWAVE ELECTROMAGNETIC ENERGY. THE CONSTRUCTION IS DEFINED BY A WALL STRUCTURE HAVING AT LEAST THREE SPACED HIGH DIELECTRIC LAYERS, A LOW DIELECTRIC LAYER BETWEEN EACH PAIR OF HIGH DIELECTRIC LAYERS, AND A PLURALITY OF PARALLEL ELECTRICAL CONDUCTORS IN THE HIGH DIELECTRIC LAYERS. THE WALL STRUCTURE IS ARRANGED TO PROVIDE HIGH TRANSMISSION EFFICIENCY OVER A WIDE RANGE OF INCIDENCE ANGLES, LOW REFLECTION OVER A WIDE RANGE OF INCIDENCE ANGLES, AND LOW PHASE DELAY VARIATION OVER A WIDE RANGE OF INCIDENCE ANGLES.
Inventors
- 👤 Leonard C Hoots
- 👤 Dallas L Addis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:07
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/42; H01Q1/425; H01Q1/422
Claims Analysis
Total Claims: 0
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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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |