GB998815A - Improvements in or relating to high frequency electrical apparatus - Google Patents
Improvements in or relating to high frequency electrical apparatusInfo
- Publication number
- GB998815A GB998815A GB2682160A GB2682160A GB998815A GB 998815 A GB998815 A GB 998815A GB 2682160 A GB2682160 A GB 2682160A GB 2682160 A GB2682160 A GB 2682160A GB 998815 A GB998815 A GB 998815A
- Authority
- GB
- United Kingdom
- Prior art keywords
- window
- waveguide
- electrons
- electric
- conical
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/08—Dielectric windows
-
- 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
- H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
- H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
- H01J25/40—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the backward travelling wave being utilised
Landscapes
- Microwave Tubes (AREA)
Abstract
998,815. Waveguide windows; electric discharge tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. July 26, 1961 [Aug. 3, 1960; Dec. 29, 1960], Nos. 26821/60 and 44592/60. Headings H1D and H1W. The " single surface multifactor effect" is avoided in the output waveguide windows of generators having sufficient power to produce the effect. The effect consists in the repeated bombardment of discrete areas of the window by secondary electrons repeatedly driven back towards the locality of their origin. It is stated that dispersion of the electrons may be achieved by using wave modes which do not have an electric field gradient tending to concentrate electrons in discrete areas of low field strength. Thus, a conical window 2, Fig. 2, may be situated in a circular waveguide 1 propagating an E 01 mode wave and arranged between two ordinary H 01 rectangular guides 5, 6. The H 01 circular-electric mode and the H 11 mode in a rectangular waveguide are also stated to be suitable. A modified method comprises mounting the window 10, Fig. 7, which may be plane, hemispherical or conical, near a tapered portion 11 of the output guide, the larger end of the taper being nearer the evacuated (generator) of the guide. The electrons tend to drift away from the window towards an area of low field strength as indicated by the arrow 4. A third method consists in the provision of an auxiliary steady magnetic field coincident with or parallel to the waveguide axis, generated, e.g. by a solenoid 6, Fig. 1. In this construction, the conical window 5 has a liquid-cooled graded seal and the window itself is gas-cooled.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2682160A GB998815A (en) | 1960-08-03 | 1960-08-03 | Improvements in or relating to high frequency electrical apparatus |
| NL267751D NL267751A (en) | 1960-08-03 | 1961-07-31 | |
| FR869952A FR1303623A (en) | 1960-08-03 | 1961-08-03 | Improvements to high frequency electrical devices |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2682160A GB998815A (en) | 1960-08-03 | 1960-08-03 | Improvements in or relating to high frequency electrical apparatus |
| GB4459260 | 1960-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB998815A true GB998815A (en) | 1965-07-21 |
Family
ID=10249781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2682160A Expired GB998815A (en) | 1960-08-03 | 1960-08-03 | Improvements in or relating to high frequency electrical apparatus |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR1303623A (en) |
| GB (1) | GB998815A (en) |
| NL (1) | NL267751A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3617779A1 (en) * | 1986-05-27 | 1987-12-03 | Max Planck Gesellschaft | FLUID TIGHT COUPLING DEVICE FOR MICROWAVE RADIATION |
| GB2238424A (en) * | 1989-11-06 | 1991-05-29 | Eev Ltd | Magnetrons. |
-
1960
- 1960-08-03 GB GB2682160A patent/GB998815A/en not_active Expired
-
1961
- 1961-07-31 NL NL267751D patent/NL267751A/xx unknown
- 1961-08-03 FR FR869952A patent/FR1303623A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3617779A1 (en) * | 1986-05-27 | 1987-12-03 | Max Planck Gesellschaft | FLUID TIGHT COUPLING DEVICE FOR MICROWAVE RADIATION |
| US4782314A (en) * | 1986-05-27 | 1988-11-01 | Max-Planck Gesellschaft Zur Foerderung Der Wissenschaften E.V. | Fluid-tight coupling device for microwaves |
| GB2238424A (en) * | 1989-11-06 | 1991-05-29 | Eev Ltd | Magnetrons. |
| US5210465A (en) * | 1989-11-06 | 1993-05-11 | Eev Limited | Magnetron having an tm01 output coupling probe passing through a coupling iris |
| GB2238424B (en) * | 1989-11-06 | 1993-12-22 | Eev Ltd | Magnetrons |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1303623A (en) | 1962-09-14 |
| NL267751A (en) | 1964-08-10 |
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