EP0069426A2 - Tube amplificateur à micro-ondes avec deux résonateurs à tore - Google Patents

Tube amplificateur à micro-ondes avec deux résonateurs à tore Download PDF

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Publication number
EP0069426A2
EP0069426A2 EP82200811A EP82200811A EP0069426A2 EP 0069426 A2 EP0069426 A2 EP 0069426A2 EP 82200811 A EP82200811 A EP 82200811A EP 82200811 A EP82200811 A EP 82200811A EP 0069426 A2 EP0069426 A2 EP 0069426A2
Authority
EP
European Patent Office
Prior art keywords
ring
resonator
amplifier tube
electron beam
tube according
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
Application number
EP82200811A
Other languages
German (de)
English (en)
Other versions
EP0069426A3 (en
EP0069426B1 (fr
Inventor
Heinz Dipl.-Ing. Bohlen
Enzio Dipl.-Ing. Demmel
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0069426A2 publication Critical patent/EP0069426A2/fr
Publication of EP0069426A3 publication Critical patent/EP0069426A3/de
Application granted granted Critical
Publication of EP0069426B1 publication Critical patent/EP0069426B1/fr
Expired legal-status Critical Current

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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
    • H01J25/20—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 having special arrangements in the space between resonators, e.g. resistive-wall amplifier tube, space-charge amplifier tube, velocity-jump tube
    • 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

Definitions

  • the invention relates to a microwave amplifier tube with two ring resonators, the first of which serves as a control resonator and with the aid of a cathode system connected to this resonator generates an electron beam rotating around the ring axis with the frequency of a control signal, in which the electron beam is accelerated by a direct voltage and enters the second ring resonator tuned to the same frequency, into which it influences a high-frequency electromagnetic field and to which it releases part of its energy.
  • a microwave amplifier tube of this type is known from DE-OS 29 47 264.
  • a cathode surface mounted in a ring resonator serves as a source for a radially emerging, rotating, spoke-shaped electron beam.
  • a prestressed grid at the exit gap of the resonator ensures that electrons leave the control resonator only at the respective location of the rotating maximum of the electric field strength. These electrons are then accelerated by a high electrostatic field and enter the exit ring resonator radially.
  • the invention has for its object to design a microwave amplifier tube of the type mentioned so that the approximation of the angular velocities of the RF phase of both resonators no longer causes difficulties due to the geometry of the tube and its maximum operating frequency is significantly increased.
  • the ring resonators are arranged one above the other in the direction of the ring axis and in that the electron beam passes through the first ring resonator and the second ring resonator parallel to the ring axis.
  • the advantages achieved by the invention are, in particular, that the alignment of the angular velocities of the RF phase of both resonators no longer presents any geometrically-related difficulties and that, since the cathode is no longer concentric in the control resonator, the upper frequency limit of the tube is significantly increased.
  • Another advantage can be seen in the fact that with conventional methods an axis-parallel magnetic field can be applied to focus the electron beam, so that electron beams with a high space charge (i.e. low voltage) can be used.
  • an efficiency (> 80%) can be achieved in the amplification of RF signals, which is clearly above the value that can be achieved with klystrons.
  • the tube consists of two ring resonators 1 and 2 lying one above the other at a distance from one another.
  • the ring resonators are connected to one another by insulating rings 9, so that an acceleration path 7 is formed between the ring resonators.
  • the first ring resonator 1 is provided with an annular cathode 3 or 3a, which is arranged in an envelope 31 or 32 provided with an exit gap.
  • This cathode arrangement 3, 31 or 3a, 32 can either - as the left half of the figure shows - be arranged outside the first ring resonator 1, which is then provided with an entry gap 11, or - as the right half of the figure shows - inside the first ring resonator 1.
  • the active cathode surface of the cathode arrangement can either form a closed ring or be composed of segments.
  • the electron beam 4 emerges from the cathode arrangement parallel to the common axis of the ring resonators 1 and 2.
  • the electrons emerge from the first ring resonator or input further resonator 1 with a sufficiently large HF amplitude - to which the control signal is supplied, as is not shown here.
  • a positive bias between the cathode arrangement 3 and the input resonator 1 and further by a control grid 10, which can be arranged, for example, in the exit gap 12 of the first ring resonator it can be achieved that electrons only at the respective location of the maximum electrical HF field can exit.
  • the electron beam 9 then leaves the first ring resonator 1, the input resonator, to which - as is not shown further here - the control signal is fed, modulated by the exit gap 12.
  • the electron beam 4 is accelerated and then enters the second ring resonator 2, the output resonator, through the entry gap 21.
  • the output energy is decoupled from this resonator, as is also not shown in detail.
  • the electron beam 4 leaves this second ring resonator 2 through the exit gap 22 and is received by a likewise ring-shaped collector 8. If the residual energy of the electron beam 4 is only so large that it can be dissipated thermally by the second ring resonator 2, the exit gap 22 and the collector 8 can be dispensed with. The electron beam 4 then hits the bottom of the second ring resonator 2.
  • a continuous wave output of a few MW can be achieved at a frequency of 500 MHz.

Landscapes

  • Microwave Tubes (AREA)
  • Microwave Amplifiers (AREA)
EP82200811A 1981-07-02 1982-06-30 Tube amplificateur à micro-ondes avec deux résonateurs à tore Expired EP0069426B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3126119 1981-07-02
DE19813126119 DE3126119A1 (de) 1981-07-02 1981-07-02 Mikrowellen-verstaerkerroehre mit zwei ringresonatoren

Publications (3)

Publication Number Publication Date
EP0069426A2 true EP0069426A2 (fr) 1983-01-12
EP0069426A3 EP0069426A3 (en) 1983-05-25
EP0069426B1 EP0069426B1 (fr) 1986-01-08

Family

ID=6135953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82200811A Expired EP0069426B1 (fr) 1981-07-02 1982-06-30 Tube amplificateur à micro-ondes avec deux résonateurs à tore

Country Status (3)

Country Link
US (1) US4508992A (fr)
EP (1) EP0069426B1 (fr)
DE (2) DE3126119A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521345A1 (fr) * 1982-02-11 1983-08-12 Kernforschungsz Karlsruhe Tube amplificateur hyperfrequence

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5698949A (en) * 1995-03-28 1997-12-16 Communications & Power Industries, Inc. Hollow beam electron tube having TM0x0 resonators, where X is greater than 1
US6847168B1 (en) 2000-08-01 2005-01-25 Calabazas Creek Research, Inc. Electron gun for a multiple beam klystron using magnetic focusing with a magnetic field corrector
US8994297B2 (en) * 2009-10-21 2015-03-31 Omega P Inc. Low-voltage, Multi-Beam Klystron
US8547006B1 (en) 2010-02-12 2013-10-01 Calabazas Creek Research, Inc. Electron gun for a multiple beam klystron with magnetic compression of the electron beams

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832782C (de) * 1949-09-09 1952-02-28 Philips Nv Elektrische Entladungsroehre mit einem Hohlraumresonator
US2634383A (en) * 1950-10-31 1953-04-07 Gen Electric Cavity resonator high-frequency electron discharge device
DE1491321A1 (de) * 1964-11-12 1969-07-17 Thomson Houston Comp Francaise Anordnung zur Erzeugung eines hohlzylindrischen Elektronenstrahls in einer Elektronenstrahlroehre
DE2947264A1 (de) * 1978-11-24 1980-06-04 Us Energy Trirotron

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1060923B (de) * 1957-06-06 1959-07-09 Siemens Ag Anordnung zur unmittelbaren Kopplung zwischen einem dichtemodulierten Elektronenstrahl und einem Aussenkreis einer Hoechstfrequenzroehre
US3921027A (en) * 1974-09-13 1975-11-18 Joe Shelton Microwave beam tube

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832782C (de) * 1949-09-09 1952-02-28 Philips Nv Elektrische Entladungsroehre mit einem Hohlraumresonator
US2634383A (en) * 1950-10-31 1953-04-07 Gen Electric Cavity resonator high-frequency electron discharge device
DE1491321A1 (de) * 1964-11-12 1969-07-17 Thomson Houston Comp Francaise Anordnung zur Erzeugung eines hohlzylindrischen Elektronenstrahls in einer Elektronenstrahlroehre
DE2947264A1 (de) * 1978-11-24 1980-06-04 Us Energy Trirotron

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521345A1 (fr) * 1982-02-11 1983-08-12 Kernforschungsz Karlsruhe Tube amplificateur hyperfrequence
US4520293A (en) * 1982-02-11 1985-05-28 Kernforschungszentrum Karlsruhe Gmbh High frequency amplifier

Also Published As

Publication number Publication date
EP0069426A3 (en) 1983-05-25
EP0069426B1 (fr) 1986-01-08
DE3126119A1 (de) 1983-01-20
DE3268389D1 (en) 1986-02-20
US4508992A (en) 1985-04-02

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