US3832593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively damped travelling wave tube
Assignee: Siemens AG
•
Filing: 1973-06-15
•
Granted: 1974-08-27
•
Expires: 1993-06-15
Abstract
Abstract A travelling wave tube, with a delay line in the form of a wave guide having a plurality of slot-coupled disks secured thereto, has an elongate dielectric member received in aligned apertures of said disks. The dielectric member carries a plurality of metallized patterns which function to selectively damp electromagnetic waves of relatively high frequency, to suppress unwanted modes within said tube.
Inventors
- 👤 F Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:27
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/30
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
For use with a travelling wave tube, a delay line comprising a wave guide having a plurality of spaced-apart, slot-coupled disks, an elongate dielectric rod extending parallel to the axis of said delay line, said rod having a surface layer of damping material and a metallized structure formed as a layer on the surface of said rod, said metallized structure being coupled with said delay line for attenuating wave energy of a selected frequency, said rod being received in aligned apertures provided in said disks, and including means for rigidly supporting said rod at one end, whereby said rod is suspended within said apertures out of contact therewith.
Claim 2
Dependent Claim
108 words
For use with a travelling wave tube, a delay line comprising a wave guide having a plurality of spaced-apart, slot-coupled disks, an elongate dielectric rod extending parallel to the axis of said delay line, said rod having a surface layer of damping material and a metallized structure formed as a layer on the surface of said rod, said metallized structure being coupled with said delay line for attenuating wave energy of a selected frequency, said rod being received in aligned apertures provided in said disks, and including means for rigidly supporting said rod at one end, whereby said rod is suspended within said apertures out of contact therewith.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1, wherein said structure is positioned on said rod in the vicinity of alternate ones of said apertures.
Claim 4
Dependent Claim
30 words
Apparatus according to claim 1, including a plurality of spaced-apart metallized structures, each of said structures being positioned on said rod in the vicinity of alternate ones of said apertures.
Claim 5
Dependent Claim
36 words
Apparatus according to claim 1, wherein said metallized structures comprise a plurality of tooth-like strips, said tooth-like strips being equal in length to approximately one-quarter wavelength of the wave energy which is to be selectively suppressed.
Claim 6
Dependent Claim
31 words
Apparatus according to claim 4, including a strip of damping material applied to the surface of said rod, said damping strip joining a common end of each of said tooth-like strips.
Claim 7
Dependent Claim
24 words
Apparatus according to claim 5, including a strip of conductive material joining the ends of said tooth-like strips which are opposite said common ends.
Claim 8
Dependent Claim
34 words
Apparatus according to claim 4, wherein said tooth-like strips are oriented in a plane normal to the direction of the E-field lines of the desired wave energy of the operating mode of the tube.
Claim 9
Dependent Claim
30 words
Apparatus according to claim 1, including a further layer of damping material applied to the surface of said rod, for damping wave energy of the operating mode of the tube.
Claim 10
Dependent Claim
33 words
Apparatus according to claim 1, wherein said disks are provided wiTh a surface coating of a metal having a high melting point in the vicinity of the electron beam with said delay line.
Claim 11
Dependent Claim
74 words
Apparatus according to claim 1, including two dielectric rods, said rods being received in aligned apertures provided in said disks on opposite sides of the axis of said delay line, and a plurality of said conductive structures mounted on the surfaces of said rods, said structures being spaced in rows along the length of said rods, with the structures of one rod arranged to be equally spaced between the structures of the other rod.
Claim 12
Dependent Claim
17 words
Apparatus according to claim 1, including a soldered connection between said rod and one of said disks.
Claim 13
Dependent Claim
30 words
Apparatus according to claim 1, including means for independently supporting both ends of said rod, one of said supporting means being adapted to allow free axial movement of said rod.
Claim 14
Dependent Claim
88 words
For use with a travelling wave tube having a delay line formed of a plurality of slot-coupled disks spaced along the axis of the delay line, the method of selectively damping unwanted wave energy within said delay line, comprising the steps of; placing a dielectric rod parallel to the axis of said delay line within aligned apertures provided in said disks, and placing a metallized structure on the surface of said rod to form a resonant circuit adapted to resonate at the frequency of said unwanted wave energy.
Claim 15
Dependent Claim
88 words
For use with a travelling wave tube having a delay line formed of a plurality of slot-coupled disks spaced along the axis of the delay line, the method of selectively damping unwanted wave energy within said delay line, comprising the steps of; placing a dielectric rod parallel to the axis of said delay line within aligned apertures provided in said disks, and placing a metallized structure on the surface of said rod to form a resonant circuit adapted to resonate at the frequency of said unwanted wave energy.
References Cited (Backward Citations)
US3329855A
Cited
US3365607A
Cited
US3324338A
Cited
US3345533A
Cited
US3453491A
Cited
US3397339A
Cited
US3412279A
Cited
US3543195A
Cited
US3466494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |