GB787686A - Travelling wave tube comprising at leaest two helices - Google Patents

Travelling wave tube comprising at leaest two helices

Info

Publication number
GB787686A
GB787686A GB21995/55A GB2199555A GB787686A GB 787686 A GB787686 A GB 787686A GB 21995/55 A GB21995/55 A GB 21995/55A GB 2199555 A GB2199555 A GB 2199555A GB 787686 A GB787686 A GB 787686A
Authority
GB
United Kingdom
Prior art keywords
helices
tube
lossy
helix
different
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
GB21995/55A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority claimed from DEL21266A external-priority patent/DE1042140B/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB787686A publication Critical patent/GB787686A/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
    • H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
    • H01J23/24—Slow-wave structures, e.g. delay systems
    • H01J23/30—Damping arrangements associated with slow-wave structures, e.g. for suppression of unwanted oscillations
    • 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
    • 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
    • H01J23/06—Electron or ion guns
    • H01J23/065—Electron or ion guns producing a solid cylindrical beam
    • 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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/083—Electrostatic focusing arrangements
    • 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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • 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
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0876—Magnetic focusing arrangements with arrangements improving the linearity and homogeniety of the axial field, e.g. field straightener
    • 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
    • H01J23/24—Slow-wave structures, e.g. delay systems
    • H01J23/26—Helical slow-wave structures; Adjustment therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
    • H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
    • H01J25/36—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field
    • H01J25/38—Tubes in which an electron stream interacts with a wave travelling along a delay line or equivalent sequence of impedance elements, and without magnet system producing an H-field crossing the E-field the forward travelling wave being utilised
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/30—Angle modulation by means of transit-time tube
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguides (AREA)

Abstract

787,686. Travelling wave tubes. STANDARD TELEPHONES & CABLES, Ltd. July 29, 1955 [Aug. 4, 1954], No. 21995/55. Class 39(1). In a travelling wave tube with two or more helices 1, 2, Fig. 1, successively traversed by the beam and arranged to be at different D.C. potentials the helices are surrounded by an insulating tube 3 or insulating rods, Fig. 4 (not shown) coated with lossy material 16 which does not touch any of the helices, D.C. connection to at least one helix being made by means of the lossy material 16. The lossy material is preferably such as to cause the selective suppression of undesired modes as described in Specification 660,793. The inside part of the dielectric tube 3 which may be of glass or ceramic material is coated with strips of lossy material 15, 15a along internal ribs thereof so that the tube can function in the manner set out in Specification 771,189. The upper helix 2 is connected via L-shaped probe 2, choke sleeves 8, a wire lead and a clip 17 to the lossy coating 16. and thence via clip 18 and lead 19 passing through hollow post 13 to a base pin at the gun end of the tube. The lower helix 1 is connected via L-shaped probe 10 choke sleeve 7 posts 13 and choke sleeve 6 to a second base pin at the gun end. There are two groups of three metal posts 13, 14 joining the inner choke sleeve members 8, 9, 6, 7 together. In a modification, Fig. 4 (not shown), the helices are supported between three dielectric rods which carry arcuate strip coatings of loss material. D.C. helix potentials may be applied to the lossy strips in common or different D.C. potentials to different strips connected to different helices.
GB21995/55A 1954-08-04 1955-07-29 Travelling wave tube comprising at leaest two helices Expired GB787686A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE787686X 1954-08-04
DEL19818A DE1001425B (en) 1954-08-04 1954-09-03 Traveling coil tubes
DEL21266A DE1042140B (en) 1955-02-26 1955-02-26 Arrangement for bundled guidance of an electron beam over a larger distance, especially for transit tubes

Publications (1)

Publication Number Publication Date
GB787686A true GB787686A (en) 1957-12-11

Family

ID=27207444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21995/55A Expired GB787686A (en) 1954-08-04 1955-07-29 Travelling wave tube comprising at leaest two helices

Country Status (2)

Country Link
DE (1) DE1001425B (en)
GB (1) GB787686A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1516400B1 (en) * 1965-04-30 1971-06-09 Varian Associates TROLLEY TUBE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1516400B1 (en) * 1965-04-30 1971-06-09 Varian Associates TROLLEY TUBE

Also Published As

Publication number Publication date
DE1001425B (en) 1957-01-24

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