GB611505A - Electron discharge device and associated circuit - Google Patents
Electron discharge device and associated circuitInfo
- Publication number
- GB611505A GB611505A GB22918/44A GB2291844A GB611505A GB 611505 A GB611505 A GB 611505A GB 22918/44 A GB22918/44 A GB 22918/44A GB 2291844 A GB2291844 A GB 2291844A GB 611505 A GB611505 A GB 611505A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wave
- segments
- quarter
- resonator
- nov
- 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
- 239000004020 conductor Substances 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
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
- H01J25/50—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
Landscapes
- Radiation-Therapy Devices (AREA)
- Microwave Tubes (AREA)
Abstract
611,505. Magnetrons. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 17, 1944, No. 22918. Convention date, Nov. 19, 1943. [Class 39 (i)] A cavity magnetron has alternate anode segments 22 shorter than the ones 23 between, segments 23 being connected to conductive end plates 24, 25 and segments 22 being spaced from the end plates so that each short segment forms the inner conductor of a quarter-wave coaxial line terminated at the end by cylindrical member 21, to which all the segments are connected. The member 21 forms the inner wall of a cylindrical resonator 30, which is coupled to each quarter-wave line by apertures 35, 36 placed alternately at the top and bottom, as shown in Fig. 6. The developed view of Fig. 5 shows that a master wave in resonator 30 of Eo type will produce a circumferential magnetic field coupled to consecutive quarter-wave lines in opposite directions, so that each short segment 22 is constrained to oscillate in anti-phase with its neighbours. Mode-changing is thereby eliminted. Magnetic inserts 26, 27, Fig. 4, co-operate with external polepieces 261, 271 and also support the indirectly-heated cathode 20. The resonator 30 is preferably dimensioned so that the ratio of its outer radius b to its inner radius a is greater than 2. A coupling loop 37 or a wave-guide removes energy from the system.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US611505XA | 1943-11-19 | 1943-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB611505A true GB611505A (en) | 1948-11-01 |
Family
ID=22033949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22918/44A Expired GB611505A (en) | 1943-11-19 | 1944-11-17 | Electron discharge device and associated circuit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB611505A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1184426B (en) * | 1958-12-29 | 1964-12-31 | Western Electric Co | Wheel type magnetron tubes |
| GB2509571A (en) * | 2013-01-07 | 2014-07-09 | New Japan Radio Co Ltd | Coaxial magnetron with improved heat dissipation and cooling efficiency |
-
1944
- 1944-11-17 GB GB22918/44A patent/GB611505A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1184426B (en) * | 1958-12-29 | 1964-12-31 | Western Electric Co | Wheel type magnetron tubes |
| GB2509571A (en) * | 2013-01-07 | 2014-07-09 | New Japan Radio Co Ltd | Coaxial magnetron with improved heat dissipation and cooling efficiency |
| US9035551B2 (en) | 2013-01-07 | 2015-05-19 | New Japan Radio, Ltd | Coaxial magnetron |
| GB2509571B (en) * | 2013-01-07 | 2018-10-31 | New Japan Radio Co Ltd | Coaxial magnetron |
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