DE855284C - Magnetron tubes - Google Patents
Magnetron tubesInfo
- Publication number
- DE855284C DE855284C DEC3077A DEC0003077A DE855284C DE 855284 C DE855284 C DE 855284C DE C3077 A DEC3077 A DE C3077A DE C0003077 A DEC0003077 A DE C0003077A DE 855284 C DE855284 C DE 855284C
- Authority
- DE
- Germany
- Prior art keywords
- coaxial line
- magnetron
- anode block
- cavities
- magnetron tube
- 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
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
- H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
- H03H2/006—Transmitter or amplifier output circuits
-
- 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
- H01J25/58—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 a number of resonators; having a composite resonator, e.g. a helix
- H01J25/587—Multi-cavity magnetrons
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C5/00—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal
- H03C5/02—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube
- H03C5/04—Amplitude modulation and angle modulation produced simultaneously or at will by the same modulating signal by means of transit-time tube the tube being a magnetron
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Microwave Tubes (AREA)
Description
Die Erfindung betrifft eine insbesondere zum Zwecke der Modulation vorgesehene Magnetronröhre, bei welcher der Anodenblock Resonanzhohlräume umschließt, die mit der zentral gelegenen Kathode durch radiale Schlitze verbunden sind.The invention relates to a magnetron tube intended in particular for the purpose of modulation, in which the anode block encloses resonance cavities that correspond to the centrally located Cathode connected by radial slots.
Gemäß der Erfindung wird eine Magnetronröhre dieser Art in der Weise ausgebildet, daß die Hohlräume zusätzlich durch seitliche Schlitze bzw. Kanäle miteinander verbunden sind, die direkt inAccording to the invention, a magnetron tube of this type is formed in such a way that the cavities are also connected to each other by lateral slots or channels that directly into
ίο der Masse des Anodenblocks angeordnet sind.ίο the mass of the anode block are arranged.
Nach einer Weiterbildung der Erfindung kann dabei ein Resonanzhohlraum außerdem eine radial nach außen gehende Öffnung aufweisen, die in eine koaxiale Leitung übergeht, dergestalt, daß der Außenleiter mit dem Anodenblock und der Innenleiter mit einem Punkt im Innern des Resonanzhohl raumesi verbunden ist. According to a further development of the invention, a resonance cavity can also be radial have outward opening which merges into a coaxial line, such that the The outer conductor is connected to the anode block and the inner conductor to a point inside the resonance cavity.
Schließlich sieht die Erfindung eine Anordnung zur Veränderung der Kopplung zwischen derFinally, the invention provides an arrangement for changing the coupling between the
koaxialen Leitung und einer Magnetronröhre dieser Bauart vor, bei welcher die koaxiale Leitung durch einen Abstimmkolben abgeschlossen und der Innenleiter im Durchmesser veränderbar ist. Die Modulation wirdl vorgenommen, indem die Anodenspannung des Magnetrons verändert wird. Eine Ausführungsform der Erfindung ist in der Zeichnung veranschaulicht.coaxial line and a magnetron tube of this type, in which the coaxial line completed by a tuning piston and the inner conductor can be changed in diameter. The modulation is carried out by changing the anode voltage of the magnetron. An embodiment of the invention is illustrated in the drawing.
Gemäß der Erfindung wird bei dem dargestellten Ausführungsbeispiel als Modulator ein Magnetron M mit mehrfachen Hohlräumen C benutzt. Bei dieser Ausführung ist das Magnetron M mit dem Wellenleiter G durch eine koaxiale Leitung Z gekoppelt, deren Wellenwiderstand so gewählt wird, daß die beste Anpassung mit dem Magnetron erzielt wird. Der als Übertragungsleitung dienende Wellenleiter G ist zur Vereinfachung so dargestellt, daß er ganz schematisch an jedem Ende auf gleiche Impedanzen Zc geschlossen ist. Der Mittelstab der koaxialen Leitung Z ist in an sich bekannter Weise durch eine Schleife mit einem Hohlraum C des Magnetrons gekoppelt. Am anderen Ende ist der Stab mit einem Kolben Px verbunden, der eine regelbare Anpassungeeinrichtung bildet, welche man so einstellt, daß die Modulationskurve möglichst gerade gemacht wird. Die erforderliche Kopplung wird durch Veränderungen des Durchmessers des Stabes erzielt.According to the invention, a magnetron M with multiple cavities C is used as the modulator in the illustrated embodiment. In this embodiment, the magnetron M is coupled to the waveguide G by a coaxial line Z, the characteristic impedance of which is selected so that the best matching is achieved with the magnetron. For the sake of simplicity, the waveguide G serving as a transmission line is shown in such a way that it is very schematically closed to the same impedances Zc at each end. The central rod of the coaxial line Z is coupled in a manner known per se by a loop to a cavity C of the magnetron. At the other end of the rod is connected to a piston P x , which forms an adjustable adjustment device, which is set so that the modulation curve is made as straight as possible. The required coupling is achieved by changing the diameter of the rod.
Das benutzte Magnetron M, welches in der Zeichnung senkrecht zu seiner Achse geschnitten ist, besteht aus einer zylindrischen Kathode K, die mit einer emittierenden Schicht L überzogen ist, wobei die Hohlräume C durch Spalte mit dem mittleren zylindrischen Resonanzraum gekoppelt sind, der zwischen der Innenfläche der Anode A und der Außenfläche der Kathode liegt. Außerdem sind die verschiedenen Hohlräume C miteinander viel enger verbunden als in dem Falle, wo das Magnetron als Oszillator arbeiten würde, und zwar dank der in der dargestellten Weise angeordneten Schlitze. Als praktische Angabe sei erwähnt, daß die dem Modulatormagnetron zugeführte Spannung in der Größenordnung von 200 bis 300 V mit einem Modulationsgrad von 100%> liegt. Unter diesen Umständen bleibt das Magnetfeld gleich dem durch folgende Gleichung gelieferten Resonanzmagnetfeld. The magnetron M used, which is cut perpendicular to its axis in the drawing, consists of a cylindrical cathode K which is coated with an emitting layer L , the cavities C being coupled by gaps with the central cylindrical resonance chamber between the inner surface the anode A and the outer surface of the cathode. In addition, the various cavities C are connected to one another much more closely than in the case where the magnetron were to operate as an oscillator, thanks to the slots arranged as shown. As a practical indication, it should be mentioned that the voltage supplied to the modulator magnetron is in the order of magnitude of 200 to 300 V with a degree of modulation of 100%. Under these circumstances, the magnetic field remains the same as the resonance magnetic field given by the following equation.
= —- = ϊ'77
fn = --- = ϊ'77
fn
Claims (3)
Deutsche Patentschriften Nr. 664 735, 725 490.Referred publications:
German patent specifications No. 664 735, 725 490.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR855284X | 1947-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE855284C true DE855284C (en) | 1952-11-10 |
Family
ID=9328179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEC3077A Expired DE855284C (en) | 1947-03-13 | 1950-10-03 | Magnetron tubes |
Country Status (6)
| Country | Link |
|---|---|
| BE (1) | BE480879A (en) |
| CH (1) | CH272119A (en) |
| DE (1) | DE855284C (en) |
| FR (1) | FR944473A (en) |
| GB (1) | GB663625A (en) |
| NL (1) | NL139177B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE664735C (en) * | 1934-03-01 | 1938-09-06 | Telefunken Gmbh | Magnetron tubes |
| DE725490C (en) * | 1939-09-22 | 1942-09-23 | Telefunken Gmbh | Magnetic field tube with divided anode |
-
0
- BE BE480879D patent/BE480879A/xx unknown
- NL NL63302937A patent/NL139177B/en unknown
-
1947
- 1947-03-13 FR FR944473D patent/FR944473A/en not_active Expired
-
1948
- 1948-02-20 CH CH272119D patent/CH272119A/en unknown
- 1948-03-11 GB GB7494/48A patent/GB663625A/en not_active Expired
-
1950
- 1950-10-03 DE DEC3077A patent/DE855284C/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE664735C (en) * | 1934-03-01 | 1938-09-06 | Telefunken Gmbh | Magnetron tubes |
| DE725490C (en) * | 1939-09-22 | 1942-09-23 | Telefunken Gmbh | Magnetic field tube with divided anode |
Also Published As
| Publication number | Publication date |
|---|---|
| FR944473A (en) | 1949-04-06 |
| CH272119A (en) | 1950-11-30 |
| NL139177B (en) | |
| BE480879A (en) | |
| GB663625A (en) | 1951-12-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE974489C (en) | Device for amplifying electromagnetic centimeter waves | |
| DE3203283C2 (en) | ||
| DE4021182A1 (en) | DEVICE FOR COATING THE SURFACE OF OBJECTS | |
| DE2138939A1 (en) | Microwave power composite oscillator | |
| DE2626420B2 (en) | Process for the simultaneous etching of several through holes | |
| DE1008789B (en) | Ultra high frequency oscillator using a spoked wheel type magnetic field tube | |
| DE855284C (en) | Magnetron tubes | |
| DE2641580C2 (en) | Method and device for setting the frequency of a piezoelectric quartz oscillator | |
| DE1815570A1 (en) | E-plane waveguide circulator with three connections | |
| DE2417577C2 (en) | High-frequency heating device for heating a dielectric material of elongated shape and small cross-section | |
| DE2828874A1 (en) | DEVICE FOR COMBINING HIGH FREQUENCY ENERGY | |
| DE858709C (en) | Tunable cavity resonator | |
| DE864584C (en) | Magnetron tubes with an attached resonance circuit | |
| DE2221916B2 (en) | Magnetron oscillator | |
| DE2656610A1 (en) | COAXIAL MAGNETRON | |
| DE1541027C2 (en) | Multi-chamber klystron | |
| DE961277C (en) | Magnetron tubes with a ring-shaped cathode and a ring-shaped anode block of the same diameter | |
| DE821372C (en) | Multiple cavity magnetron | |
| DE2557809B2 (en) | H DEEP 111 DUAL CIRCULAR FILTER WITH DAMPING POLE ABOVE OR BELOW THE PASSAGE AREA | |
| DE958214C (en) | Short-circuit piston or slide for hollow pipes and cavity resonators | |
| DE1940598A1 (en) | Connector for electrical devices | |
| DE926559C (en) | Method for frequency modulating a magnetron | |
| DE614375C (en) | Tube generator for generating vibrations with a periodically changing frequency | |
| DE856007C (en) | System for VHF transmission | |
| DE1127497B (en) | Electron beam tubes with speed modulation to amplify very short electrical waves |