US4014027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Omnidirectional antenna for around a mast
Assignee: DE STAAT DER NEDERLANDEN TE DEZEN VERTEGENWOORDIGD DOOR DE DIRECTEUR-GENERAAL DER POSTERIJEN TELEGRAFIE EN TELEFONIE
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Filing: 1976-01-19
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Granted: 1977-03-22
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Expires: 1996-01-19
Abstract
Abstract Omnidirectional antenna provided with a rotation-symmetrical reflector and a concentric radiator, to be mounted around a mast, which radiator has an uninterrupted annular exit edge. All the diametrical cross sections of the radiator along the axis of the antenna are uniform. The path followed by the radiation in the radiator beyond the part deflecting from the axis of the antenna, is turned up in the direction of the reflector.
Inventors
- 👤 Michiel Antonius Reinders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:10
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/42; H01Q13/00; H01Q13/02; H01Q13/04; H01Q19/00; H01Q19/10; H01Q19/102
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
An omnidirectional antenna surrounding a mast having a uniform diametrical cross-section at all angles comprising: A. an annular truncated rotation-symmetrical reflector, B. an annular radiator having an outer circular peripheral edge and an inner polygonal edge adjacent the mast, and C. a plurality of triangular shaped horns parallel to the axis of said mast feeding the polygonal inner edge of said radiator.
Claim 2
Dependent Claim
62 words
An omnidirectional antenna surrounding a mast having a uniform diametrical cross-section at all angles comprising: A. an annular truncated rotation-symmetrical reflector, B. an annular radiator having an outer circular peripheral edge and an inner polygonal edge adjacent the mast, and C. a plurality of triangular shaped horns parallel to the axis of said mast feeding the polygonal inner edge of said radiator.
Claim 3
Dependent Claim
18 words
An antenna according to claim 1 wherein said horns are fed at their apices spaced from said radiator.
Claim 4
Dependent Claim
25 words
An antenna according to claim 1 wherein said annular radiator includes a truncated conical annular ring adjacent said circular peripheral edge directed toward said reflector.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |