GB1142037A - Microwave tube apparatus having an improved slot mode absorber - Google Patents
Microwave tube apparatus having an improved slot mode absorberInfo
- Publication number
- GB1142037A GB1142037A GB42194/66A GB4219466A GB1142037A GB 1142037 A GB1142037 A GB 1142037A GB 42194/66 A GB42194/66 A GB 42194/66A GB 4219466 A GB4219466 A GB 4219466A GB 1142037 A GB1142037 A GB 1142037A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetron
- annular
- polepiece
- slots
- brazed
- 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
- 239000006096 absorbing agent Substances 0.000 title 1
- LTPBRCUWZOMYOC-UHFFFAOYSA-N Beryllium oxide Chemical compound O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 229910052750 molybdenum Inorganic materials 0.000 abstract 1
- 239000011733 molybdenum Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
Classifications
-
- 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
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/18—Resonators
- H01J23/20—Cavity resonators; Adjustment or tuning thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
- H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
- H01J25/54—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode having only one cavity or other resonator, e.g. neutrode tubes
- H01J25/55—Coaxial cavity magnetrons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/162—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion absorbing spurious or unwanted modes of propagation
Landscapes
- Microwave Tubes (AREA)
- Non-Reversible Transmitting Devices (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
1,142,037. Magnetron oscillators. S-F-D LABORATORIES Inc. 21 Sept., 1966 [19 Oct., 1965], No. 42194/66. Heading H1D. Slot-mode resonance in a multi-cavity magnetron is prevented by a suppressor arranged adjacent to the slots, the suppressor comprising a lossy member having a metallic sleeve bonded to it on the side remote from the slots. As shown, the magnetron comprises radial vanes 52 surrounding a cathode 59 and defining a circular array of resonant cavities. These are coupled to an annular cavity 51 by means of a circular array of axially-directed slots 53. The unwanted slot mode is suppressed by means of an annular member 55 consisting of carbon-impregnated alumina or beryllia having one surface metallized with a mixture of manganese, titanium, molybdenum or tungsten. This surface is brazed to a copper sleeve 61 which is in turn brazed to the polepiece 57 of the magnetron. Modifications are described in which: (a) the sleeve 61 fills the whole space between the member 55 and the polepiece, (b) the member 55 is brazed directly to the polepiece. The invention may be applied to the type of magnetron having an annular cathode adjacent to an annular array of resonators which surrounds a central cylindrical cavity (Fig. 2, not shown). This is tuned by means of a disc supported on the end of an axially movable plunger. The output comprises an axiallydirected waveguide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US497791A US3412284A (en) | 1965-10-19 | 1965-10-19 | Microwave tube apparatus having an improved slot mode absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1142037A true GB1142037A (en) | 1969-02-05 |
Family
ID=23978331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB42194/66A Expired GB1142037A (en) | 1965-10-19 | 1966-09-21 | Microwave tube apparatus having an improved slot mode absorber |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3412284A (en) |
| JP (1) | JPS5248456B1 (en) |
| FR (1) | FR1500494A (en) |
| GB (1) | GB1142037A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3479556A (en) * | 1967-09-27 | 1969-11-18 | Sfd Lab Inc | Reverse magnetron having an output circuit employing mode absorbers in the internal cavity |
| US4053850A (en) * | 1976-09-23 | 1977-10-11 | Varian Associates, Inc. | Magnetron slot mode absorber |
| KR100487329B1 (en) * | 2002-10-10 | 2005-05-03 | 엘지전자 주식회사 | Condensing Type Clothes Drier and Controlling the Same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2821659A (en) * | 1954-11-18 | 1958-01-28 | Bell Telephone Labor Inc | Magnetron |
| NL277268A (en) * | 1961-04-26 | |||
| US3231781A (en) * | 1962-08-10 | 1966-01-25 | Sfd Lab Inc | Reverse magnetron with slot mode absorber |
-
1965
- 1965-10-19 US US497791A patent/US3412284A/en not_active Expired - Lifetime
-
1966
- 1966-09-21 GB GB42194/66A patent/GB1142037A/en not_active Expired
- 1966-10-14 JP JP41067245A patent/JPS5248456B1/ja active Pending
- 1966-10-17 FR FR80287A patent/FR1500494A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1541062A1 (en) | 1969-07-24 |
| FR1500494A (en) | 1967-11-03 |
| US3412284A (en) | 1968-11-19 |
| JPS5248456B1 (en) | 1977-12-09 |
| DE1541062B2 (en) | 1972-08-03 |
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