US4005329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slow-wave structure attenuation arrangement with reduced frequency sensitivity
Assignee: Raytheon Co
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Filing: 1975-12-22
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Granted: 1977-01-25
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Expires: 1995-12-22
Abstract
Abstract In the disclosed attenuation arrangement a plurality of axially extending boron nitride support rods having a substantially rectangular cross-section are disposed about the peripheral surface of a helical slow-wave structure. An attenuating coating is provided on the substantially radially extending opposing lateral surfaces of each rod, with the substantially circumferentially extending opposing lateral rod surfaces being free from attenuating material.
Inventors
- 👤 Arthur E. Manoly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A slow-wave structure arrangement comprising: a helical slow-wave structure; a plurality of dielectric rods disposed about the peripheral surface of said slow-wave structure and extending parallel to the axis of said slow-wave structure, each of said rods having a substantially rectangular cross-section and defining first and second opposing lateral surfaces disposed substantially circumferentially with respect to said slow-wave structure and third and fourth opposing lateral surfaces disposed substantially radially with respect to said slow-wave structure; and at least one of said rods having a coating of attenuating material disposed on a portion of said third and fourth surfaces, with said first and second surfaces being free from attenuating material.
Claim 2
Dependent Claim
109 words
A slow-wave structure arrangement comprising: a helical slow-wave structure; a plurality of dielectric rods disposed about the peripheral surface of said slow-wave structure and extending parallel to the axis of said slow-wave structure, each of said rods having a substantially rectangular cross-section and defining first and second opposing lateral surfaces disposed substantially circumferentially with respect to said slow-wave structure and third and fourth opposing lateral surfaces disposed substantially radially with respect to said slow-wave structure; and at least one of said rods having a coating of attenuating material disposed on a portion of said third and fourth surfaces, with said first and second surfaces being free from attenuating material.
Claim 3
Dependent Claim
21 words
An arrangement according to claim 1 wherein said rods are of anisotropic boron nitride, and said attenuating material is pyrolytic carbon.
Claim 4
Dependent Claim
34 words
An arrangement according to claim 1 wherein said rods and said slow-wave structure are substantially coextensive along an axial direction, and said coating extends for about two thirds of the length of said rod.
References Cited (Backward Citations)
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US3466493A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |