GB597511A - Improvements in oscillators of the velocity modulation type - Google Patents

Improvements in oscillators of the velocity modulation type

Info

Publication number
GB597511A
GB597511A GB11839/44A GB1183944A GB597511A GB 597511 A GB597511 A GB 597511A GB 11839/44 A GB11839/44 A GB 11839/44A GB 1183944 A GB1183944 A GB 1183944A GB 597511 A GB597511 A GB 597511A
Authority
GB
United Kingdom
Prior art keywords
disc
feed
oscillations
shell
effected
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
GB11839/44A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB597511A publication Critical patent/GB597511A/en
Expired legal-status Critical Current

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
    • H01J23/10—Magnet systems for directing or deflecting the discharge along a desired path, e.g. a spiral path
    • 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
    • H01J25/06—Tubes having only one resonator, without reflection of the electron stream, and in which the modulation produced in the modulator zone is mainly velocity modulation, e.g. Lüdi-Klystron
    • 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

Landscapes

  • Particle Accelerators (AREA)
  • Microwave Tubes (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

597,511. Velocity-modulated tubes. WESTERN ELECTRIC CO., Inc. June 21, 1944, No. 11839. Convention date, June 23, 1943. [Class 39 (i)] A velocity-modulation oscillator is arranged to inhibit oscillation in the gravest mode or a plurality of the gravest modes, only oscillations of higher order being produced. This is effected by adjustment of the impelling force applied to the electron stream and thus of the transit time or alternatively by design of a feed-back between two resonators to pass freely only the oscillations of higher order. The device shown in Fig. 1 comprises an evacuated container 12 enclosing an electron gun 13, apertured conducting discs 15, 16 separated by gaps 18, 19 from drift tube 17, and a cup-shaped collector 14 of graphite or other material. The container is surrounded by a two-part shell 20 divided along a diametral plane passing through the axis of the container and constituting with the discs 15, 16 a cavity resonator. Polarizing voltages are applied to the electrodes, the discs 15, 16 and the drift tube 'from a source 25 through potentiometers 26, 27. The shell 20 is of magnetic material, magnetized to provide a positive pole at the centre part-adjacent the disc 15 and a negative pole at the centre part adjacent the disc 16, focusing of the electron beam being thereby effected. External magnetic shunts consisting of U-shaped strips 34, 35 of soft iron may be adjusted in position to vary the field. The shell is provided with an internal coating of copper or copper overplated with silver to reduce hysteresis. Tuning is'effected by a plug or plugs 32. Energy is withdrawn by a co-axial line 49. The device shown in Fig. 2 comprises toroidal resonators 36, 37 connected by a wave-guide 45 designed to feed 'back only the higher mode oscillations the guide being provided with apertures 43, 44 of predetermined size or with irises. Tuning plugs 41, 42 are provided for each resonator. Instead of a wave-guide a co-axial line may be used as feed-:back. In modifications the two resonators are constituted by a single shell divided by a thick walled conducting disc which supports thd drift tube, the disc being provided with apertures or irises designed to feed back only the higher mode oscillations.
GB11839/44A 1943-06-23 1944-06-21 Improvements in oscillators of the velocity modulation type Expired GB597511A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US597511XA 1943-06-23 1943-06-23

Publications (1)

Publication Number Publication Date
GB597511A true GB597511A (en) 1948-01-28

Family

ID=22024982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11839/44A Expired GB597511A (en) 1943-06-23 1944-06-21 Improvements in oscillators of the velocity modulation type

Country Status (4)

Country Link
US (1) US2457194A (en)
FR (1) FR938639A (en)
GB (1) GB597511A (en)
NL (1) NL68012C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2561398A (en) * 1945-04-23 1951-07-24 Standard Telephones Cables Ltd Coaxial line circuits
US2577971A (en) * 1947-05-14 1951-12-11 Rca Corp Microwave cavity resonator device
US2928972A (en) * 1954-04-09 1960-03-15 Varian Associates Electron tube apparatus
NL201813A (en) * 1955-03-18

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL92204C (en) * 1934-11-08
US2167201A (en) * 1935-06-28 1939-07-25 Pintsch Julius Kg Electron tube
US2280824A (en) * 1938-04-14 1942-04-28 Univ Leland Stanford Junior Radio transmission and reception
USRE22724E (en) * 1938-04-14 1946-02-19 Radio transmission and reception
US2323735A (en) * 1940-03-14 1943-07-06 Westinghouse Electric & Mfg Co Electric discharge apparatus
BE482822A (en) * 1940-05-28
BE476368A (en) * 1940-07-05
USRE22389E (en) * 1940-07-13 1943-11-02 Electron beam concentrating
US2379819A (en) * 1941-03-07 1945-07-03 Bell Telephone Labor Inc Frequency modulator
US2408409A (en) * 1941-04-08 1946-10-01 Bell Telephone Labor Inc Ultra high frequency electronic device
US2404279A (en) * 1941-08-07 1946-07-16 Rca Corp Ultra short wave system
US2409608A (en) * 1941-09-24 1946-10-22 Bell Telephone Labor Inc Ultra high frequency detector

Also Published As

Publication number Publication date
NL68012C (en)
FR938639A (en) 1948-10-20
US2457194A (en) 1948-12-28

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