GB683524A - Improvements in or relating to valves of the magnetron type - Google Patents

Improvements in or relating to valves of the magnetron type

Info

Publication number
GB683524A
GB683524A GB3044/49A GB304449A GB683524A GB 683524 A GB683524 A GB 683524A GB 3044/49 A GB3044/49 A GB 3044/49A GB 304449 A GB304449 A GB 304449A GB 683524 A GB683524 A GB 683524A
Authority
GB
United Kingdom
Prior art keywords
cavities
feb
cavity
amplifier
coupling
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
Application number
GB3044/49A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Publication of GB683524A publication Critical patent/GB683524A/en
Expired legal-status Critical Current

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
    • H01J25/50—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
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/02—Waveguide horns
    • 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

Abstract

683,524. Magnetrons. COMPAGNIE. GENERALE DE TELEGRAPHIE SANS FIL. Feb. 3, 1949 [Feb. 4, 1948; Feb. 6, 1948: Feb. 7, 1948; Feb. 11, 1948], Nos. 3044/49, 3045/49; 3046/49 and 3047/49. Class 39(i) A mutti-cavity magnetron has empty grooves formed in the anode block to connect neighbouring cavities to one another; the grooves are of such depth and width as to provide desired degree of coupling between the cavities. The tendency to self-oscillation may be reduced or eliminated, and the magnetron may be operated as a stable amplifier or as a wide-band oscillator. Conventional strapping may also be provided, or the anode segments may be shaped as described in Specification 666,689, to secure operation in the #-mode. As an amplifier, only two cavities may be provided in the anode block. Cavity B<SP>1</SP>, Fig. 12, is the input circuit, and cavity B<SP>2</SP> the output. For cascade amplification further cavities may be inserted between cavities B<SP>1</SP> and B<SP>2</SP>. As shown, Fig. 16, in a class C amplifier the cathode K is eccentric in the cathode space. The intense electric field in the region F prevents electronic back coupling between the input and output circuits, or a suitable magnetic or electrostatic field, or screens may be provided. In a wide frequency band amplifier the input circuit may consist of two cavities B1, B1<SP>1</SP>, Fig. 17, resonant on two adjacent frequencies, and the output circuit a similar pair of cavities B2, B2<SP>1</SP>. As an oscillator, cavities may be provided all round the anode block, and two of the cavities coupled to a tunable stabilizing and output external resonator of high Q. With an external resonator constituted by a wave guide, coupling may be directly to only one cavity through a glass member. Specification 663,625 also is referred to. The Specification as open to inspection under Sect. 91, comprises also the provision of coupling between the cavities through external circuits, such as including a coaxial line, a wave guide, a resonant cavity, or an auxiliary tunable magnetron, instead of, or as well as, through grooves in the anode block. Where grooves are provided their effects may be adjusted by inserting conducting bodies in them. This subject-matter does not appear in the Specification as accepted.
GB3044/49A 1948-02-04 1949-02-03 Improvements in or relating to valves of the magnetron type Expired GB683524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR862786X 1948-02-04

Publications (1)

Publication Number Publication Date
GB683524A true GB683524A (en) 1952-12-03

Family

ID=9342982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3044/49A Expired GB683524A (en) 1948-02-04 1949-02-03 Improvements in or relating to valves of the magnetron type

Country Status (6)

Country Link
BE (1) BE486871A (en)
CH (1) CH281263A (en)
DE (1) DE862786C (en)
FR (4) FR57996E (en)
GB (1) GB683524A (en)
NL (2) NL144435B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212324A (en) * 1987-12-22 1989-07-19 New Japan Radio Co Ltd Strapped vane magnetron

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006913B (en) * 1953-02-28 1957-04-25 Elektronik Ges Mit Beschraenkt Magnetron tubes with cup circle
DE1046786B (en) * 1953-11-17 1958-12-18 Deutsche Elektronik Gmbh Tunable magnetic field tubes of the wheel type
DE953102C (en) * 1953-12-03 1956-11-29 Elektronik G M B H Deutsche Magnetic field tubes for amplification or frequency transformation of very short waves
DE1110326B (en) * 1954-02-10 1961-07-06 Deutsche Elektronik Gmbh Electron tubes for generating or amplifying short electrical waves
US2965797A (en) * 1959-06-22 1960-12-20 Gen Electric Crossed-field device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE717541C (en) * 1935-10-23 1942-02-17 Telefunken Gmbh Circuit for magnetron tubes with two groups of axially parallel electrode segments that are symmetrical to the cathode

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212324A (en) * 1987-12-22 1989-07-19 New Japan Radio Co Ltd Strapped vane magnetron
GB2212324B (en) * 1987-12-22 1992-03-25 New Japan Radio Co Ltd Strapped vane-type magnetron

Also Published As

Publication number Publication date
FR58269E (en) 1953-11-18
FR962294A (en) 1950-06-07
FR58462E (en) 1953-11-30
CH281263A (en) 1952-02-29
FR57996E (en) 1953-09-18
BE486871A (en)
NL85855C (en)
DE862786C (en) 1953-01-12
NL144435B (en)

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