GB483839A - Improvements in or relating to magnetron electron discharge devices and arrangementsincorporating the same - Google Patents
Improvements in or relating to magnetron electron discharge devices and arrangementsincorporating the sameInfo
- Publication number
- GB483839A GB483839A GB30165/36A GB3016536A GB483839A GB 483839 A GB483839 A GB 483839A GB 30165/36 A GB30165/36 A GB 30165/36A GB 3016536 A GB3016536 A GB 3016536A GB 483839 A GB483839 A GB 483839A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anodes
- electrode
- segments
- cathode
- interception
- 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
- 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
Landscapes
- Microwave Tubes (AREA)
Abstract
483,839. Magnetrons and circuits therefor; electric resonators. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Nov. 5, 1936, No. 30165. Convention date, Nov. 5, 1935. [Classes 39 (i.), 40 (iii),and 40 (v)] A magnetron has a split anode system comprising a plurality of anodes A1 ... A4; Fig. 3, a tuned oscillatory circuit coupled to the anode system, the anodes surrounding the cathode K and contributing to oscillation generation, and a further electrode N surrounding the anodes and the cathode and maintained at a greater positive potential than the anodes so as to serve as an interception electrode to receive electrons which pass the anodes while itself remaining electrically neutral as regards oscillation frequencies. The anodes are thus free to generate oscillations without undue heating by collected electrons. The typical election path is shown in Fig. 3. The electrode N may be split up into a number of electrically connected segments, each facing a gap between the anodes. The electrode may be provided with cooling fins or artificial gas or liquid cooling; it may then form part of the envelope, being closed at each end by ceramic members supporting and spacing the internal electrodes. In a modification the interception electrode is divided peripherally into two segments N1, N2, Fig. 5, between which modulation potentials are applied from a transformer M; the segments are short circuited for oscillation frequencies by condensers Ch inside or outside the tube. H is a resonant circuit. The division mav be axial instead of peripheral. The condensers Ch may be replaced by two capacity plates covering the gaps between N1 and N2 and connected to a higher positive potential than the interception electrodes. In a further modification, the interception electrode system comprises four perforated segments N1... N4, Fig. 9, which are backed by a further electron retarding electrode N0 at a less positive potential. The electrodes N1 ... N4 are connected alternately to a modulating circuit. A battery B introduces a difference of potential between the two pairs of segments to avoid frequency doubling. The perforated electrodes may be composed of wires parallel to the cathode. Fig. 10a shows a magnetron which is integral with a resonator consisting of two hollow metal bodies, preferably hemispheres, coupled together capacitatively by flanges Cu between which pass the leads to the two halves of a perforated double anode system A1, A2. The two halves of the interception electrode system N1, N2 are connected together and to the nodes P<1>, P<11>. The leads to the cathode are brought out through one node. The oscillation anodes may be made as segments of ellipses in order to follow more closely the paths of the electrons. The anodes may also be coated with secondary-electron-emitting material ; by this means electrons arriving in the wrong phase and striking the anodes release an excess of secondary electrons and contribute usefully to oscillation generation. Specification 460,689 is referred to. The Specification. as open to inspection under Sect. 91 refers to electron-discharge devices other than magnetrons and describes a modification in which modulating plates are disposed within a perforated double anode system, on either side of the cathode. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201778X | 1935-11-05 | ||
DE310336X | 1936-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB483839A true GB483839A (en) | 1938-04-27 |
Family
ID=25758970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30165/36A Expired GB483839A (en) | 1935-11-05 | 1936-11-05 | Improvements in or relating to magnetron electron discharge devices and arrangementsincorporating the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US2173252A (en) |
BE (1) | BE418252A (en) |
CH (1) | CH201778A (en) |
FR (1) | FR813117A (en) |
GB (1) | GB483839A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL62744C (en) * | 1942-02-27 | |||
FR955108A (en) * | 1945-06-23 | 1950-01-10 | ||
BE491888A (en) * | 1948-10-29 | |||
US2706248A (en) * | 1949-02-12 | 1955-04-12 | Ericsson Telefon Ab L M | Systems for magnetic and electric electron flow control |
US2629050A (en) * | 1950-07-22 | 1953-02-17 | Gen Electric | Variable electronic capacitance device |
NL275650A (en) * | 1951-07-05 |
-
0
- BE BE418252D patent/BE418252A/xx unknown
-
1936
- 1936-10-27 CH CH201778D patent/CH201778A/en unknown
- 1936-11-05 FR FR813117D patent/FR813117A/en not_active Expired
- 1936-11-05 GB GB30165/36A patent/GB483839A/en not_active Expired
- 1936-11-12 US US110439A patent/US2173252A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2173252A (en) | 1939-09-19 |
FR813117A (en) | 1937-05-26 |
BE418252A (en) | |
CH201778A (en) | 1938-12-15 |
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