Patent US4356495A successfully refreshed from Google Patents.
US4356495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated antenna feedhorn with elliptical aperture
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1980-09-29
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Granted: 1982-10-26
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Expires: 2000-09-29
Abstract
Abstract An antenna feedhorn comprising a transition waveguide for matching the cross section of the feeder line to the cross section of a subsequent hybrid mode exciting section followed by a horn section with an elliptical aperture, and with the hybrid mode exciting section and the horn section each being provided with a corrugated structure. The hybrid mode exciting section has a circular cross section and the horn section has a cross section which steadily widens from the circular cross section of the hybrid mode exciting section to the elliptical cross section of the horn aperture.
Inventors
- 👤 Gunter Morz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:34
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02; H01Q13/0208; H01Q13/0225; H01P; H01P5/00; H01P5/08; H01P5/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
In an antenna feedhorn including a transition waveguide for matching the cross section of the feeder line to the cross section of a following hybrid mode exciting section which in turn is followed by a horn section having an elliptical aperture, said hybrid mode exciting section and said horn section each being provided with a corrugated structure; the improvement wherein said hybrid mode exciting section has a circular cross section, and said horn section has a cross section which steadily and smoothly widens from said circular cross section of said hybrid mode exciting section to the elliptical cross section of said aperture.
Claim 2
Dependent Claim
102 words
In an antenna feedhorn including a transition waveguide for matching the cross section of the feeder line to the cross section of a following hybrid mode exciting section which in turn is followed by a horn section having an elliptical aperture, said hybrid mode exciting section and said horn section each being provided with a corrugated structure; the improvement wherein said hybrid mode exciting section has a circular cross section, and said horn section has a cross section which steadily and smoothly widens from said circular cross section of said hybrid mode exciting section to the elliptical cross section of said aperture.
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) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |