GB616866A - Improvements in or relating to magnetrons - Google Patents
Improvements in or relating to magnetronsInfo
- Publication number
- GB616866A GB616866A GB27781/46A GB2778146A GB616866A GB 616866 A GB616866 A GB 616866A GB 27781/46 A GB27781/46 A GB 27781/46A GB 2778146 A GB2778146 A GB 2778146A GB 616866 A GB616866 A GB 616866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- magnetron
- condenser
- cavity resonator
- tuned
- 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
- 230000010355 oscillation Effects 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000005855 radiation Effects 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
- H01J23/14—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
-
- 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
- H01J25/56—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 with interdigital arrangements of anodes, e.g. turbator tube
Landscapes
- Microwave Tubes (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
616,866. Magnetrons. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING AKT.-GES. Sept. 16, 1946, No. 27781. Convention date, Sept. 15, 1945. Addition to 574,551. [Class 39 (i)] In a magnetron according to the parent Specification, in which the anode comprises interdigitated members forming the inner wall of an annular chamber constituting a cavity resonator, parts of the cathode in which high-frequency currents are induced and which do not belong to the cavity resonator-oscillation system, are complemented to form a low radiation cathode - oscillation system tuned to minimize high-frequency losses in the magnetron. The cathode heater leads may comprise a Lecher line closed by a condenser. This condenser may comprise a valve acting as a variable condenser for modulating the magnetron oscillations. The cathode heating current is supplied over side plates supporting the cathode. Where the side plates and cathode are electrically separate from one another, each may be tuned by a separate Lecher line. In another arrangement a quarter-wavelength long concentric line acting as a choke to the high-frequency currents is inserted in one of the leads and may be either inside or outside the magnetron; it may be formed as a boring in one of the magnet polepieces. The output energy is abstracted from the magnetron by a loop inside the annular cavity resonator, or the high-frequency currents flowing in the cathode may provide the output energy, which is abstracted at 21 from the Lecher line constituting the cathode leads 3, Fig. 4. The Lecher line is tuned by the impedance 18 which may be a cavity resonator. The spiral cathode 1 has a low-loss conductor 19 connected in parallel with it through a condenser 20 to reduce' high-frequency losses in the circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH616866X | 1942-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB616866A true GB616866A (en) | 1949-01-27 |
Family
ID=4523819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27781/46A Expired GB616866A (en) | 1942-02-09 | 1946-09-16 | Improvements in or relating to magnetrons |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2522184A (en) |
| BE (1) | BE478534A (en) |
| CH (2) | CH224083A (en) |
| DE (2) | DE972125C (en) |
| FR (2) | FR892467A (en) |
| GB (1) | GB616866A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462137A (en) * | 1946-02-26 | 1949-02-22 | Raytheon Mfg Co | Electron discharge device |
| US2609522A (en) * | 1950-04-03 | 1952-09-02 | Joseph F Hull | Magnetron |
| DE1204334B (en) * | 1954-06-22 | 1965-11-04 | Raytheon Co | Magnetron |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE704248C (en) * | 1933-06-13 | 1941-03-26 | Rca Corp | Magnetic field tube for ultrashort waves with unslit anode |
| GB453243A (en) * | 1934-07-02 | 1936-09-08 | Marconi Wireless Telegraph Co | Improvements in or relating to very high frequency (micro-wave) signalling systems and apparatus |
| NL51135C (en) * | 1934-10-11 | |||
| US2149024A (en) * | 1934-11-28 | 1939-02-28 | Rca Corp | Electron discharge device and circuit for high frequency oscillations |
| NL53201C (en) * | 1935-06-20 | |||
| US2167201A (en) * | 1935-06-28 | 1939-07-25 | Pintsch Julius Kg | Electron tube |
| DE699011C (en) * | 1936-04-30 | 1940-11-21 | Telefunken Gmbh | Slotted magnetron arrangement for generating short waves |
| US2207846A (en) * | 1938-06-30 | 1940-07-16 | Rca Corp | Electronic discharge device |
| US2432571A (en) * | 1943-02-24 | 1947-12-16 | Rca Corp | Electron discharge device employing resonators |
| US2421636A (en) * | 1944-05-29 | 1947-06-03 | Gen Electric | Tunable magnetron |
-
0
- BE BE478534D patent/BE478534A/xx unknown
-
1942
- 1942-02-09 CH CH224083D patent/CH224083A/en unknown
-
1943
- 1943-01-05 FR FR892467D patent/FR892467A/en not_active Expired
-
1945
- 1945-09-15 CH CH254464D patent/CH254464A/en unknown
-
1946
- 1946-09-11 US US696117A patent/US2522184A/en not_active Expired - Lifetime
- 1946-09-14 FR FR55009D patent/FR55009E/en not_active Expired
- 1946-09-16 GB GB27781/46A patent/GB616866A/en not_active Expired
-
1949
- 1949-01-01 DE DEP7158D patent/DE972125C/en not_active Expired
- 1949-01-01 DE DEP28998D patent/DE972070C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE972070C (en) | 1959-05-21 |
| FR892467A (en) | 1944-04-07 |
| BE478534A (en) | |
| FR55009E (en) | 1951-06-05 |
| US2522184A (en) | 1950-09-12 |
| CH254464A (en) | 1948-04-30 |
| DE972125C (en) | 1959-05-27 |
| CH224083A (en) | 1942-10-31 |
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