DE1491499B1 - Electron beam generator for a transit time tube - Google Patents
Electron beam generator for a transit time tubeInfo
- Publication number
- DE1491499B1 DE1491499B1 DE19621491499 DE1491499A DE1491499B1 DE 1491499 B1 DE1491499 B1 DE 1491499B1 DE 19621491499 DE19621491499 DE 19621491499 DE 1491499 A DE1491499 A DE 1491499A DE 1491499 B1 DE1491499 B1 DE 1491499B1
- Authority
- DE
- Germany
- Prior art keywords
- cathode
- focusing electrode
- face
- holder part
- attached
- 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.)
- Granted
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
- H01J23/02—Electrodes; Magnetic control means; Screens
-
- 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
-
- 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
- H01J23/207—Tuning of single resonator
-
- 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
- H01J25/12—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 pencil-like electron stream in the axis of the resonators
Description
Die Erfindung betrifft Elektronenstrahlerzeuger für Laufzeitröhren, insbesondere Klystrons.The invention relates to electron guns for time-of-flight tubes, in particular klystrons.
Elektronenstrahlerzeuger, bei denen die im wesentlichen aus einer thermisch emittierenden Flächenkathode und einem Kathodenzylinder bestehende Kathodenanordnung mit der koaxial dazu angeordneten ringförmigen Fokussierelektrode eine starre Baueinheit bildet, sind mannigfach bekannt.Electron guns in which the essentially consists of a thermally emitting Flat cathode and a cathode cylinder existing cathode arrangement with the coaxially arranged therewith ring-shaped focusing electrode forms a rigid structural unit are known in many ways.
Die bekannten Elektronenstrahlerzeuger haben einen relativ komplizierten Aufbau, damit der genaue Abstand zwischen der Kathode und der Fokussierelektrode auch bei Temperaturschwankungen konstant gehalten werden kann und damit eine wirksame Wärmeabschirmung erzielt wird, um ein einwandfreies Arbeiten der Röhre zu gewährleisten. Besonders schwierig ist es, derartige Elektronenstrahlerzeuger in kleine Röhren einzusetzen, die mit einer Frequenz von mehr als 10 000 MHz betrieben werden.The known electron guns have a relatively complicated structure, so that the exact The distance between the cathode and the focusing electrode remains constant even with temperature fluctuations can be kept and thus an effective heat shield is achieved to a flawless To ensure working of the tube. It is particularly difficult to use such electron guns to be used in small tubes that are operated at a frequency of more than 10,000 MHz.
Der Erfindung liegt daher die Aufgabe zugrunde, einen Elektronenstrahlerzeuger vereinfachter und verbesserter Ausführung anzugeben, der bei Gewährleistung einer wirksamen Wärmeabschirmung die oben angegebenen Nachteile vermeidet und sich zum Einbau auch in kleine Laufzeitröhren eignet.The invention is therefore based on the object of simplifying an electron gun Specify improved design, which while ensuring effective heat shielding the Avoids the disadvantages indicated above and is also suitable for installation in small transit time tubes.
Gemäß der Erfindung wird dies dadurch erreicht, daß die Kathodenanordnung in einem mit seitlichen Durchbrechungen versehenen tassenförmigen Metallteil, dessen offene Stirnseite in Strahlrichtung zeigt, untergebracht und von diesem gehaltert ist (Kathodenhalterungsteil), das seinerseits im Bereich seiner offenen Stirnseite an der Fokussierelektrode befestigt ist, und daß die Fokussierelektrode von einem ebenfalls mit seitlichen Durchbrechungen versehenen tassenförmigen Metallteil, dessen offene Stirnseite in Strahlrichtung zeigt, gehaltert ist (Fokussierelektrodenhalterungsteil), das die Kathodenanordnung samt Kathodenhalterungsteil allseits mit Abstand umgibt und an dem im Bereich seiner offenen Stirnseite die Fokussierelektrode befestigt ist.According to the invention this is achieved in that the cathode arrangement in a with lateral Cup-shaped metal part with perforations, the open end face of which points in the direction of the beam, housed and held by this (cathode holder part), which in turn in the area of its open Front side is attached to the focusing electrode, and that the focusing electrode of one also Cup-shaped metal part provided with lateral perforations, the open end face in the direction of the beam shows, is supported (focusing electrode holder part), which includes the cathode assembly The cathode holder part surrounds at a distance on all sides and on which in the area of its open end face the Focusing electrode is attached.
Vorzugsweise werden die Seitenwände der beiden Halterungsteile von frei endenden Armen oder Streben gebildet. !- The side walls of the two mounting parts are preferably formed by freely ending arms or struts. ! -
Ein Ausführungsbeispiel gemäß der Erfindung ist in der Figur im Schnitt dargestellt.An embodiment according to the invention is shown in section in the figure.
Der metallische Grundkörper 11 eines Klystrons hat eine Bohrung 12, die sich nach unten stufenweise erweitert. In der Erweiterung ist ein erfindungsgemäßer Strahlerzeuger 13 angeordnet, der einen die Röhre durchsetzenden Elektronenstrahl erzeugt. Der Strahlerzeuger 13 besitzt einen einfachen Aufbau, der besonders zur Verwendung in kleinen Röhren für hohe Frequenzen geeignet ist. Eine ebene Kathode 17 wird von einer Kathodenhülse 18 getragen, die einen nicht dargestellten Heizdraht umgibt. Die Kathodenanordnung 17,18 ist in einem tassenförmigen Metallteil 19 untergebracht, dessen offene Stirnseite in Strahlrichtung zeigt und der den Kathodenhalterungsteil bildet. Um den Querschnitt für die Wärmeableitung zu verringern, ist die Seitenwand des Metallteils mit Durchbrechungen versehen und in Form von Armen 21 ausgebildet, die ihrerseits mit ihren freien Enden an der Seitenwand einer zylindrischen Fokussierelektrode 22 befestigt sind. Die Fokussierelektrode ist koaxial zu der Kathode 17 angeordnet und wird von einem größeren tassenförmigen Metallteil 23, dem Fokussierelektrodenhalterungsteil, gehaltert, dessen Seitenwand ebenfalls mit Durchbrechungen versehen und in Form von Streben 24 ausgebildet ist, deren freie Enden an der Seitenwand der Fokussierelektrode 22 befestigt sind. Der Metallteil 23 ist an einem schalenförmigen Isolierbauteil 25 befestigt, der Durchführungsstifte 26 aufweist, die darin vakuumdicht befestigt sind. Die Leiter 27 und 28 für den Heizdraht sind mit zweien der Stifte 26 verbunden. Ein metallischer Abdichtring 29 ist vakuumdicht an dem Isolierbauteil 25 und an dem Grundkörper 11 angelötet, um die gesamte Anordnung mit dem Elektronenstrahlerzeuger 13 an dem Grundkörper 11 zu haltern.The metallic base body 11 of a klystron has a bore 12 that extends downwards in steps expanded. In the extension, a beam generator 13 according to the invention is arranged, which one the Electron beam penetrating through the tube is generated. The beam generator 13 has a simple structure that is particularly suitable for use in small tubes for high frequencies. A flat cathode 17 is carried by a cathode sleeve 18 which surrounds a heating wire, not shown. The cathode assembly 17,18 is housed in a cup-shaped metal part 19, the open end face in Shows beam direction and which forms the cathode support part. Around the cross section for heat dissipation to reduce, the side wall of the metal part is provided with openings and in the form of Arms 21 formed, in turn with their free ends on the side wall of a cylindrical focusing electrode 22 are attached. The focusing electrode is arranged coaxially with the cathode 17 and is supported by a larger cup-shaped metal part 23, the focusing electrode holder part, whose side wall is also provided with openings and is designed in the form of struts 24, the free ends of which are attached to the side wall of the focusing electrode 22. The metal part 23 is on a cup-shaped insulating member 25 is attached, which has lead-through pins 26 which are vacuum-tight therein are attached. The conductors 27 and 28 for the heating wire are connected to two of the pins 26. A metallic sealing ring 29 is vacuum-tight on the insulating component 25 and on the base body 11 soldered to the entire arrangement with the electron gun 13 on the base body 11 to hold.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85090A US3117251A (en) | 1961-01-26 | 1961-01-26 | Deformable wall tuning means for klystrons |
Publications (2)
Publication Number | Publication Date |
---|---|
DE1491499B1 true DE1491499B1 (en) | 1970-03-12 |
DE1491499C1 DE1491499C1 (en) | 1972-09-14 |
Family
ID=22189402
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19621491500 Pending DE1491500B1 (en) | 1961-01-26 | 1962-01-25 | Power klystron |
DE19621491499 Expired DE1491499C1 (en) | 1961-01-26 | 1962-01-25 | Electron beam generator for a transit time tube |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19621491500 Pending DE1491500B1 (en) | 1961-01-26 | 1962-01-25 | Power klystron |
Country Status (3)
Country | Link |
---|---|
US (1) | US3117251A (en) |
DE (2) | DE1491500B1 (en) |
GB (4) | GB1004977A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999041762A1 (en) * | 1998-02-13 | 1999-08-19 | Thomson Tubes Electroniques | Electronic tube grid with axial beam |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1143751B (en) * | 1977-08-01 | 1986-10-22 | Sits Soc It Telecom Siemens | KLYSTRON ADJUSTABLE OSCILLATOR |
US4661784A (en) * | 1979-06-27 | 1987-04-28 | Raytheon Company | Klystron having fixed and variable tuning mechanisms |
US5304942A (en) * | 1992-05-12 | 1994-04-19 | Litton Systems, Inc. | Extended interaction output circuit for a broad band relativistic klystron |
US5469023A (en) * | 1994-01-21 | 1995-11-21 | Litton Systems, Inc. | Capacitive stub for enhancing efficiency and bandwidth in a klystron |
US5469024A (en) * | 1994-01-21 | 1995-11-21 | Litton Systems, Inc. | Leaky wall filter for use in extended interaction klystron |
US6259207B1 (en) | 1998-07-27 | 2001-07-10 | Litton Systems, Inc. | Waveguide series resonant cavity for enhancing efficiency and bandwidth in a klystron |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2146365A (en) * | 1934-12-13 | 1939-02-07 | John C Batchelor | Electron emitter |
GB499532A (en) * | 1937-11-15 | 1939-01-25 | Gen Electric Co Ltd | Improvements in or relating to cathode ray tubes and the like |
US2493046A (en) * | 1942-08-03 | 1950-01-03 | Sperry Corp | High-frequency electroexpansive tuning apparatus |
US2418844A (en) * | 1943-04-01 | 1947-04-15 | Raytheon Mfg Co | Ultra high frequency tube |
BE471464A (en) * | 1943-09-21 | |||
US2514383A (en) * | 1944-08-25 | 1950-07-11 | Sperry Corp | High-frequency cavity resonator apparatus |
US2544675A (en) * | 1945-08-09 | 1951-03-13 | Sperry Corp | Frequency multiplier of the cavity resonator type |
US2517726A (en) * | 1946-07-17 | 1950-08-08 | Philco Corp | Ultra high frequency electron tube |
US2606302A (en) * | 1949-03-30 | 1952-08-05 | Sperry Corp | Temperature compensated cavity resonator structure |
US2837685A (en) * | 1953-01-30 | 1958-06-03 | Sperry Rand Corp | High frequency klystron tube construction |
BE542863A (en) * | 1954-11-19 | |||
US2892958A (en) * | 1956-07-13 | 1959-06-30 | High Voltage Engineering Corp | Corrugated waveguide |
-
1961
- 1961-01-26 US US85090A patent/US3117251A/en not_active Expired - Lifetime
- 1961-12-19 GB GB16518/61A patent/GB1004977A/en not_active Expired
- 1961-12-19 GB GB27801/64A patent/GB1004979A/en not_active Expired
- 1961-12-19 GB GB16519/64A patent/GB1004978A/en not_active Expired
- 1961-12-19 GB GB45484/61A patent/GB1004976A/en not_active Expired
-
1962
- 1962-01-25 DE DE19621491500 patent/DE1491500B1/en active Pending
- 1962-01-25 DE DE19621491499 patent/DE1491499C1/en not_active Expired
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999041762A1 (en) * | 1998-02-13 | 1999-08-19 | Thomson Tubes Electroniques | Electronic tube grid with axial beam |
FR2775118A1 (en) * | 1998-02-13 | 1999-08-20 | Thomson Tubes Electroniques | GRID FOR ELECTRONIC TUBE WITH AXIAL BEAM WITH IMPROVED PERFORMANCE |
Also Published As
Publication number | Publication date |
---|---|
DE1491499C1 (en) | 1972-09-14 |
US3117251A (en) | 1964-01-07 |
GB1004979A (en) | 1965-09-22 |
GB1004977A (en) | 1965-09-22 |
GB1004978A (en) | 1965-09-22 |
DE1491500B1 (en) | 1971-04-08 |
GB1004976A (en) | 1965-09-22 |
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