GB783775A - Improvements in or relating to electron discharge devices employing cavity resonators - Google Patents
Improvements in or relating to electron discharge devices employing cavity resonatorsInfo
- Publication number
- GB783775A GB783775A GB9726/53A GB972653A GB783775A GB 783775 A GB783775 A GB 783775A GB 9726/53 A GB9726/53 A GB 9726/53A GB 972653 A GB972653 A GB 972653A GB 783775 A GB783775 A GB 783775A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resonator
- apertures
- annular
- energy
- resonators
- 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
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
- H01J25/14—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with tube-like electron stream coaxial with the axis of the resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
- H01J25/18—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator with radial or disc-like electron stream perpendicular to the axis of the resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/22—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone
- H01J25/26—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone in which the electron stream is coaxial with the axis of the resonator or resonators and is tube-like before reflection
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/22—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone
- H01J25/30—Reflex klystrons, i.e. tubes having one or more resonators, with a single reflection of the electron stream, and in which the stream is modulated mainly by velocity in the modulator zone in which the electron stream is perpendicular to the axis of the resonator or resonators and is radial or disc-like before reflection
Landscapes
- Microwave Tubes (AREA)
Abstract
783,775. Microwave couplings. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 23, 1954 [April 10, 1953], No. 9726/53. Class 40 (8). [Also in Group XL (a)] An electron discharge device has a toroidal cavity resonator having opposed walls provided with annular apertures through which an annular or sheet-like electron beam is projected, and energy transferring means for feeding energy in or out are formed by an aperture or apertures in the resonator wall separate from the openings forming the annular beam passage gap, the energy transferring aperture or apertures being uniformly disposed around the resonator to load the resonator uniformly and so to reduce the liability of the resonator to resonate in an unwanted mode. The more uniform transfer of energy around the cavity resonator reduces the tendency of the resonator to oscillate in an unwanted mode. In one form, Fig. 1, the cathode 4, resonator 1 and reflector 7 are annular ; the cathode may alternatively be outside, and the reflector 7 inside, the resonator. The emissive surface of the cathode may be plane or concave, and the cathode is carried by a ceramic block 5. Screen electrodes 6 focus the beam into sheet form. 8, 9, 10 is a steel envelope the parts of which are welded together, and 11 is the pinch. Energy is extracted by means of an odd plural number, e.g. three or seven, apertures 12 uniformly disposed around the resonator which allow energy to pass via tapered coaxial line 13 to circular waveguide 14 operating on the Eg mode, the open end of the guide having a sealed glass window 19. The conical inner conductor is carried by disc 15 having boss 16 for supporting electrodes 4, 6 and the outer conductor has a flange 17 welded to steel plate 10 and carries ceramic block 18 supporting reflector 7. The apertures 12 may be circular or slot-like. In modifications the waveguide 14 may be replaced by a coaxial line the inner conductor of which is an extension of the cone, an annular glass window being provided, Fig. 2 (not shown). The apertures 12 can be replaced by an annular gap associated with a diaphragm, Fig. 3 (not # shown) or with a - transformer, Fig. 4 (not 4 shown). In a modification, Fig. 6, energy is extracted via an odd plurality of apertures 26 spaced #g apart to waveguide 25. The closed end 28 of the guide is tapered to avoid constricting the output end. Oscillators or amplifiers with two concentric or axially spaced resonators can be used, Figs. 7-10 (Fig. 9 only shown). In Fig. 7 (not shown) the resonators each have a plurality of circumferential apertures for mutual coupling, the feedback energy being confined by two parallel annular plates. In Fig. 9, which may be an amplifier, the input and output coaxial lines 40, 39 are similar and are coupled to the inner resonators via a plurality of apertures or an annular slot. For oscillator operation, the resonators are coupled by cylinders 34. The beam is generated by annular cathode 37. Alternatively the form of coupling shown in Fig. 6 may be employed, Fig. 10 (not shown). The inter-resonator coupling discs or cylinders are such as to further minimize undesired modes of oscillation in the resonators. Undesired modes have an even number of circumferential nodes from two upwards while the desired mode has no circumferential nodes.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9726/53A GB783775A (en) | 1953-04-10 | 1953-04-10 | Improvements in or relating to electron discharge devices employing cavity resonators |
DEE8832A DE1093489B (en) | 1953-04-10 | 1954-04-07 | Electric discharge tubes with speed modulation for generating or amplifying very short electric waves |
US421542A US2901660A (en) | 1953-04-10 | 1954-04-07 | Electron discharge devices employing cavity resonators |
FR1097861D FR1097861A (en) | 1953-04-10 | 1954-04-07 | Improvements to electron tubes with resonant cavities |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9726/53A GB783775A (en) | 1953-04-10 | 1953-04-10 | Improvements in or relating to electron discharge devices employing cavity resonators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB783775A true GB783775A (en) | 1957-10-02 |
Family
ID=9877583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9726/53A Expired GB783775A (en) | 1953-04-10 | 1953-04-10 | Improvements in or relating to electron discharge devices employing cavity resonators |
Country Status (4)
Country | Link |
---|---|
US (1) | US2901660A (en) |
DE (1) | DE1093489B (en) |
FR (1) | FR1097861A (en) |
GB (1) | GB783775A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL97028C (en) * | 1956-08-01 | |||
US3248593A (en) * | 1962-02-16 | 1966-04-26 | Gen Electric | Multiple beam radio frequency apparatus having cooperating resonators and mode suppression means |
DE3204833C1 (en) * | 1982-02-11 | 1987-11-12 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | High frequency amplifier |
FR2596199B1 (en) * | 1986-03-19 | 1994-03-18 | Thomson Csf | OUTPUT CIRCUIT FOR KLYSTRON AND KLYSTRON COMPRISING SUCH AN OUTPUT CIRCUIT |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2259690A (en) * | 1939-04-20 | 1941-10-21 | Univ Leland Stanford Junior | High frequency radio apparatus |
DE750380C (en) * | 1940-03-12 | 1945-01-06 | Vibration generator circuit for short or ultra-short waves | |
US2394008A (en) * | 1941-04-09 | 1946-02-05 | Bell Telephone Labor Inc | Beam resonator tube |
US2392380A (en) * | 1942-12-07 | 1946-01-08 | Sperry Gyroscope Co Inc | High-voltage apparatus |
US2466063A (en) * | 1943-02-03 | 1949-04-05 | Sperry Corp | High-power high-frequency electron discharge apparatus |
FR990675A (en) * | 1944-03-25 | 1951-09-25 | Csf | Ultra-short-wave high-power emitting electron tubes |
US2506752A (en) * | 1944-07-22 | 1950-05-09 | Rca Corp | Electron discharge device employing cavity resonators |
US2653273A (en) * | 1951-04-14 | 1953-09-22 | Research Corp | High-frequency amplifier |
US2667598A (en) * | 1951-11-30 | 1954-01-26 | Rca Corp | Electron discharge apparatus utilizing a cavity resonator |
-
1953
- 1953-04-10 GB GB9726/53A patent/GB783775A/en not_active Expired
-
1954
- 1954-04-07 DE DEE8832A patent/DE1093489B/en active Pending
- 1954-04-07 US US421542A patent/US2901660A/en not_active Expired - Lifetime
- 1954-04-07 FR FR1097861D patent/FR1097861A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1093489B (en) | 1960-11-24 |
FR1097861A (en) | 1955-07-12 |
US2901660A (en) | 1959-08-25 |
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