US3680145A
Expired / Lapsed
US
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Multimode horn
Assignee: International Standard Electric Corp
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Filing: 1971-03-29
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Granted: 1972-07-25
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Expires: 1991-03-29
Abstract
Abstract Multimode horn enabling to obtain a radiation pattern the phase of which is practically nil within a wide range of values of the radiation angle, characterized by the fact that the length of the paths of the modes according to the geometrical axis of the horn is such as phase differences exist between the said modes at the center of the horn aperture.
Inventors
- 👤 Daniel Edmond Beguin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/02; H01Q13/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
A multimode horn having excited modes TE10 + TE30 wherein mode TE30 is excited by mode TE10 by a broadening of the height dimension of a single guide, comprising: at least one waveguide section having length L1 and large dimension b for propagating at least two modes, wherein the phase difference P1 between said two modes resulting from path L1 is defined by the equation
Claim 2
Dependent Claim
65 words
A multimode horn having excited modes TE10 + TE30 wherein mode TE30 is excited by mode TE10 by a broadening of the height dimension of a single guide, comprising: at least one waveguide section having length L1 and large dimension b for propagating at least two modes, wherein the phase difference P1 between said two modes resulting from path L1 is defined by the equation
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1 in which said phase difference PO at the center of said aperture is less than zero degrees.
Claim 4
Dependent Claim
22 words
Apparatus according to claim 1 in which said phase difference at the center of said aperture is defined as PO Congruent -10*.
References Cited (Backward Citations)
US3373431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |