CN1146621A - Liner electron-beam tube - Google Patents
Liner electron-beam tube Download PDFInfo
- Publication number
- CN1146621A CN1146621A CN 96110785 CN96110785A CN1146621A CN 1146621 A CN1146621 A CN 1146621A CN 96110785 CN96110785 CN 96110785 CN 96110785 A CN96110785 A CN 96110785A CN 1146621 A CN1146621 A CN 1146621A
- Authority
- CN
- China
- Prior art keywords
- grid
- electron
- capacitor
- inductor
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/04—Tubes having one or more resonators, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly density modulation, e.g. Heaff tube
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/14—Leading-in arrangements; Seals therefor
- H01J23/15—Means for preventing wave energy leakage structurally associated with tube leading-in arrangements, e.g. filters, chokes, attenuating devices
Landscapes
- Microwave Tubes (AREA)
Abstract
In a tube such as an IOT, an electron gun includes a cathode 2 grid and anode surrounded by a resonant input cavity 5. A grid lead 10 supplies a voltage to the grid 3 and includes a filter comprising a capacitor 11 and inductor 12 which are both approximately one quarter wavelength long at a selected frequency to reduce or prevent rf leakage along the grid lead. The grid lead is arranged to extend through the cavity 5 and is located within the interior space which is surrounded by the annular cavity 5.
Description
The present invention relates to linear electron-beam tube, particularly inductive output tube (IOT).
Inductive output tube is a kind ofly high-frequency input signal to be added in device on the zone between gun cathode and the grid through input resonator.It is modulated the electronics that electron gun produces.Consequent intensive modulated electron beam is imported in the output cavity and interacts, thus the high frequency output signal that output is amplified.
The object of the invention is to provide a kind of improved linear electron-beam tube, and particularly input cavity is around the modified model inductive output tube that also can be used for other electron tube of electron gun.
Comprise the electron gun structure that contains negative electrode, grid and anode according to linear electron-beam tube provided by the invention.During work, send into grid/cathode zone by the high-frequency input signal that the input resonator that is arranged on around the electron gun will be exaggerated, it is characterized in that the conductor wire that voltage is delivered on the grid comprises the filter that is used to reduce through the radiofrequency signal leakage of this lead.
In the inductive output tube normal work period, the high-frequency signal that will be used for modulated electron beam adds to input cavity also can be caused along the loss of signal of grid lead and influence the driving of inductive output tube.This influence is the operate as normal of this electron tube of overslaugh on some frequency of its bandwidth seriously, the means of high frequency filter are installed in employing additional in grid lead, can fully suppress this influence, thereby make this influence no longer become the subject matter of inductive output tube work.
This filter preferably includes inductor and capacitor, in a most preferred embodiment of the present invention, one end of inductor is connected with the grid frame, the other end is connected with capacitor, favourable situation is, capacitor is a cylindrical structural, it have voltage deliver to the center conductor on the grid and separate therewith around cylindrical parts.Between center conductor and outer conductor other dielectric material of air or certain, the also capacitor of available other structure.
Best, be the quarter-wave length of institute's selected frequency one of in capacitor and the inductor at least.Institute's selected frequency is to produce when leaking along grid lead to produce the frequency of interfering.
Capacitor in the filter is the compact shape structure of cylinder preferably, by selecting to determine that the lining in gap between the inside and outside post can produce the capacitor of high power capacity exactly.
Especially execute in the example in the best of the present invention, input resonator is the loop configuration with inside and outside annular wall volume, grid lead be arranged on cavity inner wall around the space in.So just provided compact especially setting, but guardwire is not damaged between transportation or installation period.More advantageously, when input resonator was the two parts that separate with radio-frequency suppressor spare, grid lead was by the extension of the aperture on the wall in the chamber, and was connected on grid or the grid frame by cavity.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the simple cutaway view of the part of inductive output tube of the present invention.
Fig. 2 is the simple cutaway view of the used electric capacity of Fig. 1 inductive output tube.
Referring to Fig. 1, inductive output tube comprises the electron gun structure 1 that contains negative electrode 2, grid 3 and anode 4.Electron gun 1 by annular input high-frequency resonant cavity 5 around.Input cavity 5 comprises exterior part 6 and inner part 7, they are separated by radio frequency choking-winding 8,9, to prevent that high-frequency energy leaks in the chamber, power up the lead 10 that is pressed onto grid 3 and comprise cylindrical capacitor 11 and inductor 12, each capacitor, inductor have the quarter-wave length of institute's selected frequency, and so selecting is in order to reduce the high-frequency signal loss along grid lead.
Capacitor 11 more specifically is shown in Fig. 2, and this capacitor comprises the center conductor 13 that has hole 14, and the adjacent part of the grid lead that links to each other with inductor 12 is inserted in this hole.The hole 15 of containing the outer conductor 16 that fixedly is connected on the suitable power supply at the other end of inner wire 13, hollow stainless steel cylinder 17 is enclosed within on the center conductor 13, make them separately by the aluminium insert 18,19 that is equipped with at its two ends, thereby between them, form air gap 20.Pole plate 21 is received on the outside cylinder 17, and this pole plate 21 is fixed on the horizontal pole plate 22 of inductive output tube of the inner space 7 of determining cavity 5.Capacitor is contained in the zone 23 in the annular chamber 5 of this pipe securely, and grid lead passes cavity 5 and links grid 3.
Claims (8)
1. linear electron-beam tube, it comprises contains negative electrode, the electron gun structure of grid and anode, during work, send into grid/cathode zone by the high-frequency input signal that the input cavity that is arranged on around the electron gun will be exaggerated, it is characterized in that: voltage is delivered to conductor wire on the grid comprise and be used to reduce the filter that leaks through the radiofrequency signal of this lead.
2. electron-beam tube according to claim 1 is characterized in that: filter contains capacitor and inductor.
3. electron-beam tube according to claim 2 is characterized in that: capacitor and inductor all are about the quarter-wave length of institute's selected frequency.
4. according to claim 2 or 3 described electron-beam tubes, it is characterized in that: capacitor is to have center conductor and the outer conductor that separates with this center conductor cylindrical, by center conductor voltage is delivered to grid.
5. according to claim 2 or 3 described electron-beam tubes, it is characterized in that: a termination grid of inductor, another termination capacitor.
6. electron-beam tube according to claim 1 and 2 is characterized in that: input cavity comprises by the radio frequency choking-winding makes it spaced apart from each other inside and outside, and grid lead extends by the chamber wall of inside, chamber.
7. the inductive output tube that is limited by claim 1 or 2 described electron-beam tubes with exocoel device.
8. inductive output tube according to claim 7 is characterized in that: cavity is annular, and grid lead is arranged in the annular housing.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB9514172.7A GB9514172D0 (en) | 1995-07-12 | 1995-07-12 | Linear electron beam tubes |
| GB9514172.7 | 1995-07-12 | ||
| GBGB9515232.8A GB9515232D0 (en) | 1995-07-12 | 1995-07-25 | Linear electron beam tubes |
| GB9515232.8 | 1995-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1146621A true CN1146621A (en) | 1997-04-02 |
Family
ID=26307374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96110785 Pending CN1146621A (en) | 1995-07-12 | 1996-07-12 | Liner electron-beam tube |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0753877A2 (en) |
| CN (1) | CN1146621A (en) |
| CA (1) | CA2181100A1 (en) |
| GB (1) | GB2303245A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124125A (en) * | 2014-07-22 | 2014-10-29 | 中国科学院电子学研究所 | Induction output tube with double-gap input cavity |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2345795B (en) * | 1999-01-13 | 2003-05-21 | Marconi Applied Techn Ltd | Electron beam tube |
| GB2346257A (en) * | 1999-01-26 | 2000-08-02 | Eev Ltd | Electron beam tubes |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2277194B (en) * | 1993-04-13 | 1996-05-22 | Eev Ltd | Electron beam tubes |
| US5572092A (en) * | 1993-06-01 | 1996-11-05 | Communications And Power Industries, Inc. | High frequency vacuum tube with closely spaced cathode and non-emissive grid |
-
1996
- 1996-07-04 GB GB9614050A patent/GB2303245A/en not_active Withdrawn
- 1996-07-04 EP EP96304943A patent/EP0753877A2/en not_active Ceased
- 1996-07-12 CA CA 2181100 patent/CA2181100A1/en not_active Abandoned
- 1996-07-12 CN CN 96110785 patent/CN1146621A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124125A (en) * | 2014-07-22 | 2014-10-29 | 中国科学院电子学研究所 | Induction output tube with double-gap input cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9614050D0 (en) | 1996-09-04 |
| GB2303245A (en) | 1997-02-12 |
| CA2181100A1 (en) | 1997-01-13 |
| EP0753877A2 (en) | 1997-01-15 |
| EP0753877A3 (en) | 1997-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |