GB672766A - Magnetrons - Google Patents
MagnetronsInfo
- Publication number
- GB672766A GB672766A GB16619/47A GB1661947A GB672766A GB 672766 A GB672766 A GB 672766A GB 16619/47 A GB16619/47 A GB 16619/47A GB 1661947 A GB1661947 A GB 1661947A GB 672766 A GB672766 A GB 672766A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resonators
- tuning
- rods
- members
- magnetron
- 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
- 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
- H01J23/213—Simultaneous tuning of more than one resonator, e.g. resonant cavities of a magnetron
Landscapes
- Microwave Tubes (AREA)
Abstract
672,766. Magnetrons. STANDARD TELEPHONES & CABLES, Ltd. June 24, 1947 [Nov. 1, 1945], No. 16619/47. Class 39 (i). [Also in Group XL (b)] In a magnetron in which the anode structure defines a plurality of cavity resonators, the inductance of the resonators is varied by a first tuning means and the capacitance of the resonators is varied by a second tuning means; the tuning means comprise conducting rings carrying wedge-shaped elements which extend into the resonators. in the regions of maximum magnetic flux and electric field concentration. respectively and the rings are mounted on opposite sides of the resonators and are rigidly joined together by rods 60, 61 passing through the resonators and are actuated by an external tuning control so that as one group of tuning elements enter the resonators on one side the other group emerge from the other side. The rods 60 are journalled in guide rings 51, 56 and the rods 61 are journalled in guide ring 56 at one end and at the other end are attached to further rods 62 secured to a platform 5, rods 60 and 61 being disposed alternately. Platform 5 is movable by adjusting tuning knob 19 which actuates a flexible bellows arrangement 4. The arrangement is cooled by liquid flowing through pipes 78, 79 and includes ball races 15, 17 and balls 16, and a moving scale 20 on knob 19 co-operates with fixed scale 21 to give a measure of the longitudinal tuning motion. The cathode 31 comprises a bifilar filament in which current flows in opposite directions in adjacent turns supported at the free ends by semi-cylinders 32, 34 and conical members 33, 35, and at the other end by a rod construction 37, 38, from cup-shaped metal members 26, 27, 28 insulated from one another by glass members 29, 30. The filament is of thoriated tungsten. Terminals 39, 40, 41 are screwed on to threaded rings 42, 43, 44 brazed to members 26, 27, 28. Rod 37 is supported at its free end by insulating ring 45. Pole-pieces 46, 53, are divided into two parts 48, 49; 54, 55, with the guide rings 51, 56 supported between the pole-piece parts, and are energized by coils 75, 76. Envelope parts 2, 3 are crimped, e.g. at 52, to hold the polepieces 46, 53 in place. The output is taken to a wave-guide 69 via an impedance transformer comprising two diverging ramps 70 inside a horn-shaped member 71, the vacuum being maintained by an elliptical insulating window 72. The field set up between magnetic shoes 73, 74 deflects any free electrons escaping from the discharge space away from the window 72 so that they impinge on the inner walls of the member 71. Alternate and intermediate anode segments are strapped together by ring straps, Fig. 2 (not shown), and to further reduce the tendency for spurious modes to appear the inductance varying tuning ring is grounded to the main body of the magnetron by coiled springs compressed sidewise in echelon fashion, Fig. 4 (not shown), and platform 5 is effectively shorted to ground by the capacity between members 66, 2. The main body of the magnetron is cooled by liquid passing through tubing 77. The parts of the magnetron carrying the oscillatory currents may be of copper or tungsten.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US626130A US2512901A (en) | 1945-11-01 | 1945-11-01 | Adjustable magnetron |
Publications (1)
Publication Number | Publication Date |
---|---|
GB672766A true GB672766A (en) | 1952-05-28 |
Family
ID=24509066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16619/47A Expired GB672766A (en) | 1945-11-01 | 1947-06-24 | Magnetrons |
Country Status (2)
Country | Link |
---|---|
US (2) | US2512901A (en) |
GB (1) | GB672766A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105547186A (en) * | 2016-01-21 | 2016-05-04 | 昆明理工大学 | Magnetic tile shape measurement device of rotating disc type |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2733381A (en) * | 1956-01-31 | geier | ||
US2639406A (en) * | 1946-01-03 | 1953-05-19 | Us Sec War | Tunable magnetron tube |
BE521168A (en) * | 1950-12-18 | |||
US2820924A (en) * | 1954-01-28 | 1958-01-21 | Litton Industries Inc | Magnetron output coupler |
US2752210A (en) * | 1952-11-18 | 1956-06-26 | Gen Motors Corp | Bearing construction |
US2768326A (en) * | 1953-02-27 | 1956-10-23 | Rca Corp | High frequency electron tube |
US2806178A (en) * | 1953-08-20 | 1957-09-10 | Litton Industries Inc | Tunable magnetrons |
US2800609A (en) * | 1954-04-29 | 1957-07-23 | Litton Industries Inc | Magnetron tuner device |
US2945156A (en) * | 1956-06-07 | 1960-07-12 | Gen Electric | Tunable high-frequency apparatus |
US2906920A (en) * | 1958-01-10 | 1959-09-29 | Litton Ind Of California | Broadband tuner |
NL102264C (en) * | 1958-07-17 | |||
US3309558A (en) * | 1963-10-07 | 1967-03-14 | Varian Associates | Electromagnetic wave transmission systems including a dielectric window for transmitting high-frequency highpower electromagnetic energy to a load from a source of suchenergy such as a resonant cavity of a klystron |
US3441794A (en) * | 1966-06-15 | 1969-04-29 | Varian Associates | Dither-tuned tunable microwave tube apparatus |
US3564340A (en) * | 1969-04-03 | 1971-02-16 | Varian Associates | Manually tuned crossed-field tube employing a frictionally loaded ball screw tuning actuator |
IT7820903A0 (en) * | 1978-03-06 | 1978-03-06 | Sits Soc It Telecom Siemens | COOLING SYSTEM OF A DEVICE FOR FITTING A MICROWAVE TUBE. |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2078672A (en) * | 1934-01-31 | 1937-04-27 | Westinghouse Electric & Mfg Co | Inverter tube |
US2408234A (en) * | 1941-11-26 | 1946-09-24 | Raytheon Mfg Co | Tunable magnetron |
FR954569A (en) * | 1943-02-02 | 1950-01-03 |
-
0
- US US23517D patent/USRE23517E/en not_active Expired
-
1945
- 1945-11-01 US US626130A patent/US2512901A/en not_active Expired - Lifetime
-
1947
- 1947-06-24 GB GB16619/47A patent/GB672766A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105547186A (en) * | 2016-01-21 | 2016-05-04 | 昆明理工大学 | Magnetic tile shape measurement device of rotating disc type |
CN105547186B (en) * | 2016-01-21 | 2018-01-12 | 昆明理工大学 | A kind of rotating disc type magnetic shoe form measuring instrument |
Also Published As
Publication number | Publication date |
---|---|
USRE23517E (en) | 1952-07-01 |
US2512901A (en) | 1950-06-27 |
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