GB762106A - Improvements in or relating to travelling wave tubes - Google Patents

Improvements in or relating to travelling wave tubes

Info

Publication number
GB762106A
GB762106A GB28268/53A GB2826853A GB762106A GB 762106 A GB762106 A GB 762106A GB 28268/53 A GB28268/53 A GB 28268/53A GB 2826853 A GB2826853 A GB 2826853A GB 762106 A GB762106 A GB 762106A
Authority
GB
United Kingdom
Prior art keywords
tube
choke
gun
members
pole piece
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
GB28268/53A
Inventor
Douglas Cecil Rogers
Peter Francis Conway Burke
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 to BE570152D priority Critical patent/BE570152A/xx
Priority to BE529619D priority patent/BE529619A/xx
Priority to NL200290D priority patent/NL200290A/xx
Priority to BE532535D priority patent/BE532535A/xx
Priority to BE541462D priority patent/BE541462A/xx
Priority to NL191459D priority patent/NL191459A/xx
Priority to BE539158D priority patent/BE539158A/xx
Priority to NL200402D priority patent/NL200402A/xx
Priority to BE527619D priority patent/BE527619A/fr
Priority to BE541278D priority patent/BE541278A/xx
Priority to BE532534D priority patent/BE532534A/xx
Priority to BE527620D priority patent/BE527620A/xx
Priority to NL230187D priority patent/NL230187A/xx
Priority to GB8391/53A priority patent/GB742070A/en
Priority claimed from GB839453A external-priority patent/GB755834A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB28268/53A priority patent/GB762106A/en
Priority to GB28270/53A priority patent/GB766007A/en
Priority to GB28269/53A priority patent/GB762107A/en
Priority to US407762A priority patent/US2797360A/en
Priority to US407732A priority patent/US2890370A/en
Priority to CH322461D priority patent/CH322461A/en
Priority to CH353817D priority patent/CH353817A/en
Priority to FR1098804D priority patent/FR1098804A/en
Priority to CH328589D priority patent/CH328589A/en
Priority to DEI8450A priority patent/DE1099093B/en
Priority to DEI8451A priority patent/DE1123773B/en
Priority to FR66255D priority patent/FR66255E/en
Priority to FR66226D priority patent/FR66226E/en
Priority to FR66266D priority patent/FR66266E/en
Priority to GB18181/54A priority patent/GB787181A/en
Priority claimed from GB18181/54A external-priority patent/GB787181A/en
Priority to US447173A priority patent/US2824996A/en
Priority to US448816A priority patent/US2890371A/en
Priority to DEL19900A priority patent/DE1001360B/en
Priority to CH336509D priority patent/CH336509A/en
Priority to DEI9245A priority patent/DE1108336B/en
Priority to FR67269D priority patent/FR67269E/en
Priority to FR67270D priority patent/FR67270E/en
Priority to FR68751D priority patent/FR68751E/en
Priority to US502811A priority patent/US2871392A/en
Priority to CH334859D priority patent/CH334859A/en
Priority to DEI10339A priority patent/DE1109272B/en
Priority to FR68866D priority patent/FR68866E/en
Priority to US529818A priority patent/US2908843A/en
Priority to US530224A priority patent/US2918593A/en
Priority to GB25850/55A priority patent/GB787603A/en
Priority to FR69376D priority patent/FR69376E/en
Priority to FR69772D priority patent/FR69772E/en
Priority to GB16429/56A priority patent/GB799236A/en
Priority to FR70719D priority patent/FR70719E/en
Publication of GB762106A publication Critical patent/GB762106A/en
Priority to GB713/57A priority patent/GB836219A/en
Priority to GB1147/57A priority patent/GB831514A/en
Priority to CH351679D priority patent/CH351679A/en
Priority to FR72041D priority patent/FR72041E/en
Priority to FR755344A priority patent/FR73056E/en
Priority to FR755436A priority patent/FR73213E/en
Priority to FR772009A priority patent/FR73991E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D261/00—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings
    • C07D261/02—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings
    • C07D261/06—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members
    • C07D261/10—Heterocyclic compounds containing 1,2-oxazole or hydrogenated 1,2-oxazole rings not condensed with other rings having two or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D261/18—Carbon atoms having three bonds to hetero atoms, with at the most one bond to halogen
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
    • C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
    • C07D317/44—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D317/46—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 ortho- or peri-condensed with carbocyclic rings or ring systems condensed with one six-membered ring
    • C07D317/48—Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring
    • C07D317/62—Methylenedioxybenzenes or hydrogenated methylenedioxybenzenes, unsubstituted on the hetero ring with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to atoms of the carbocyclic ring
    • C07D317/66—Nitrogen atoms not forming part of a nitro radical
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/0404—Control of fluid pressure without auxiliary power with two or more controllers mounted in parallel
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/12—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid
    • G05D23/125—Control of temperature without auxiliary power with sensing element responsive to pressure or volume changes in a confined fluid the sensing element being placed outside a regulating fluid flow
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0278—Magnetic circuits with PM for magnetic field generation for generating uniform fields, focusing, deflecting electrically charged particles
    • 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
    • H01J23/087—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
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
    • 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
    • H01J23/36—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy
    • H01J23/40—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit
    • H01J23/42—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit the interaction circuit being a helix or a helix-derived slow-wave structure
    • 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
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode

Landscapes

  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Microwave Tubes (AREA)
  • Waveguide Aerials (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Aerials With Secondary Devices (AREA)
  • Waveguides (AREA)

Abstract

762,106. Travelling-wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Oct. 14, 1953, No. 28268/53. Class 39(1). A travelling-wave tube comprises a unitary assembly of gun helix and coupling means inserted within the envelope and sealed off by sealing together two annular metal end cap members at the electron gun end of the tube. The tube which is described in detail with reference to Figs. 2 and 4 (not shown) is generally similar to the construction described in copending Specification 762,107. In the exploded view of Fig. 3, the tube has ferromagnetic end caps 39, 40 carrying the collector and gun respectively. End cap 40 comprises a ring 46 sealed to the glass envelope and a ring 47 carrying a glass insert through which the terminal pins and locating spigot are sealed. The pole piece 49 houses the gun and is secured by three ceramic rods 53 to inner choke and pole piece member 54 of ferromagnetic material. Further choke members 57, 58 co-operating wit h brass bushes 103, Fig. 5, are secured to the latter assembly by two pairs of rods 59, 60 which also function as shorting bars for the waveguides U-shaped probes 61 are connected to the ends of the helve 55 which is carried in accurately dimensioned glass tube 56. Collector 62 has a tubular extension 63 which engages with a mica washer 93, Fig. 5, mounted in choke member 54, and a member 64 carrying copper exhaust tube 65. After processing tube 65 is pinched off and heat radiator 43 is secured over tube 64, as shown in Fig. 5. The pole piece face 51 has seatings for three end caps which are welded to ceramic rods 53 as described in copending Specification 762,105. The cupshaped and ring member of cap portion 47 are hard soldered together before sealing in glass base 48, and end cap members 46, 47 are subsequently sealed together by a rapid brazing or welding operation termed a " flash braze " The complete assembly is shown in Fig. 5, the pole piece 49 and ferromagnetic members 88, 89 being energised by coil 91 and also forming a choke. The inner surface of 88 is copper plated. The choke is longer than <#>4 but is designed to prevent escape of energy. Coil 91 is much smaller than any of coils 17, and the slight non-uniformity of the magnetic field due to the external magnetic members not ending flush with gun surface 51 is stated to be advantageous for proper beam focussing. The pole piece and choke arrangement at the output end of the tube is similar, or could be of simpler construction. Holes 94 assist in evacuating the tube, and the heat radiator 43 carries projection 95 with keyway 99, Figs. 3, 5 engaged by peg 100 of boss 96. By tightening screw 101 projection 95 is drawn up to abut against boss 96 so that the travelling wave tube is firmly secured in correct position. The inner wall of the envelope 38 has a coating 105 of loose material such as colloidal graphite or evaporated metal to preferentially attenuate undesired modes which in general have field strengths which decrease more slowly radially than the desired mode. In assembly, the gun, helix and choke members are assembled with ceramic rods 53 in a jig and the flanges of caps 79 welded to the gun and choke 54. Helix support tube 56 is slightly under length to allow for thermal expansion, it is a tight fit on one of its supports, as by slitting the support and bending it out slightly, and a good sliding fit at the other end on a similar support. In an alternative construction, Fig. 6, the ceramic rods 53 have flanged sleeves 107 welded to plated areas on the rods and to pole piece 50 and choke 57. One or more of rods 53 is plated over the whole distance between 50, 57 so as to replcae shorting bars 59. The same arrangement may be adopted for chokes 54, 58. The glass envelope 38 and end caps 39, 46 are now assembled in a jig and sealed together. Next the gun, helix and choke unitary assembly is slid into the envelope until mica washer 93 seats on collector member 63, and members 46, 47 are sealed together as described above. A forced air cooling duct 111 may be provided. The elasticity of mica washer 93 takes up longitudinal expansion of the electrode assembly. In a modification a permanent magnet focussing arrangement can be used. The tube may be used as an amplifier, oscillator, modulator or mixer. A prior art travelling- wave tube and magnetic focussing system is described in detail with reference to Fig. 1 (not shown). In this tube the polepiece housing the gun is located by mica washers one of which supports a metal tube carrying a cup-shaped choke member. A hollow metal tube of small diameter surrounding the beam projects from the base of the cup and forms, together with a straight end portion of the helix, a coupling antenna. A similar antenna is provided at the output end of the tube.
GB28268/53A 1953-03-20 1953-10-14 Improvements in or relating to travelling wave tubes Expired GB762106A (en)

Priority Applications (55)

Application Number Priority Date Filing Date Title
BE570152D BE570152A (en) 1953-03-26
BE529619D BE529619A (en) 1953-03-26
NL200290D NL200290A (en) 1953-03-26
BE532535D BE532535A (en) 1953-03-26
BE541462D BE541462A (en) 1953-03-26
NL191459D NL191459A (en) 1953-03-26
BE539158D BE539158A (en) 1953-03-26
NL200402D NL200402A (en) 1953-03-26
BE527619D BE527619A (en) 1953-03-20
BE541278D BE541278A (en) 1953-03-26
BE532534D BE532534A (en) 1953-03-26
BE527620D BE527620A (en) 1953-03-26
NL230187D NL230187A (en) 1953-03-26
GB8391/53A GB742070A (en) 1953-03-26 1953-03-26 Improvements in or relating to magnet assemblies which are long compared to their cross-sectional dimensions
GB28268/53A GB762106A (en) 1953-03-26 1953-10-14 Improvements in or relating to travelling wave tubes
GB28270/53A GB766007A (en) 1953-03-26 1953-10-14 Improvements in or relating to travelling wave tubes
GB28269/53A GB762107A (en) 1953-03-26 1953-10-14 Improvements in or relating to electron guns
US407762A US2797360A (en) 1953-03-26 1954-02-02 Travelling wave amplifiers
US407732A US2890370A (en) 1953-03-26 1954-02-02 Travelling wave tubes
CH322461D CH322461A (en) 1953-03-26 1954-03-22 Arrangement with a traveling wave tube
CH353817D CH353817A (en) 1953-03-20 1954-03-22 Device for concentrating an electron beam passing through a tunnel-shaped space
FR1098804D FR1098804A (en) 1953-03-26 1954-03-24 Structure of traveling wave amplifiers
CH328589D CH328589A (en) 1953-03-26 1954-03-25 Travelingwave tube circuit unit
DEI8450A DE1099093B (en) 1953-03-26 1954-03-26 Arrangement for coupling the helical delay line of a traveling wave tube to a waveguide
DEI8451A DE1123773B (en) 1953-03-26 1954-03-26 Magnetic focusing system for the bundled guidance of the electron beam of a travel time tube
FR66255D FR66255E (en) 1953-03-26 1954-03-26 Structure of traveling wave amplifiers
FR66226D FR66226E (en) 1953-03-26 1954-03-26 Structure of traveling wave amplifiers
FR66266D FR66266E (en) 1953-03-26 1954-04-24 Road signs or advertising signs
GB18181/54A GB787181A (en) 1953-03-26 1954-06-21 Improvements in or relating to travelling wave tubes
US447173A US2824996A (en) 1953-03-26 1954-08-02 Travelling wave tubes
US448816A US2890371A (en) 1953-03-26 1954-08-10 Travelling wave tubes
DEL19900A DE1001360B (en) 1953-03-26 1954-09-14 Coupling arrangement for traveling tubes
CH336509D CH336509A (en) 1953-03-26 1954-10-11 Traveling wave tube
DEI9245A DE1108336B (en) 1953-03-26 1954-10-12 Constructive structure of a traveling field spiral tube
FR67269D FR67269E (en) 1953-03-26 1954-10-13 Traveling wave amplifier structures
FR67270D FR67270E (en) 1953-03-26 1954-10-13 Structure of traveling wave amplifiers
FR68751D FR68751E (en) 1953-03-26 1954-10-14 Structure of traveling wave amplifiers
US502811A US2871392A (en) 1953-03-26 1955-04-21 Travelling wave tubes
CH334859D CH334859A (en) 1953-03-26 1955-05-25 Travelingwave amplifier
DEI10339A DE1109272B (en) 1953-03-26 1955-06-21 Arrangement with a low-noise traveling-field helical tube for amplifying very short electrical waves
FR68866D FR68866E (en) 1953-03-26 1955-06-21 Structure of traveling wave amplifiers
US529818A US2908843A (en) 1953-03-26 1955-08-22 Coupling arrangement for traveling wave tubes
US530224A US2918593A (en) 1953-03-26 1955-08-24 Traveling wave tubes
GB25850/55A GB787603A (en) 1953-03-26 1955-09-09 Coupling arrangement for travelling wave tubes
FR69376D FR69376E (en) 1953-03-26 1955-09-13 Structure of traveling wave amplifiers
FR69772D FR69772E (en) 1953-03-26 1955-09-16 Structure of traveling wave amplifiers
GB16429/56A GB799236A (en) 1953-03-26 1956-05-28 Improvements in or relating to electron discharge devices
FR70719D FR70719E (en) 1953-03-26 1956-06-01 Structure of traveling wave amplifiers
GB713/57A GB836219A (en) 1953-03-26 1957-01-08 Improvements in or relating to travelling wave tubes
GB1147/57A GB831514A (en) 1953-03-26 1957-01-11 Improvements in or relating to travelling wave tubes
CH351679D CH351679A (en) 1953-03-26 1957-05-24 Electron beam focusing device
FR72041D FR72041E (en) 1953-03-26 1957-05-27 Structure of traveling wave amplifiers
FR755344A FR73056E (en) 1953-03-26 1958-01-07 Structure of traveling wave amplifiers
FR755436A FR73213E (en) 1953-03-26 1958-01-08 Structure of traveling wave amplifiers
FR772009A FR73991E (en) 1953-03-26 1958-08-06 Structure of traveling wave amplifiers

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB839453A GB755834A (en) 1953-03-26 1953-03-26 Improvements in or relating to the coupling of a helix in a travelling wave tube or the like to a waveguide
GB328589X 1953-03-26
GB28268/53A GB762106A (en) 1953-03-26 1953-10-14 Improvements in or relating to travelling wave tubes
GB18181/54A GB787181A (en) 1953-03-26 1954-06-21 Improvements in or relating to travelling wave tubes
DEL19900A DE1001360B (en) 1953-03-26 1954-09-14 Coupling arrangement for traveling tubes

Publications (1)

Publication Number Publication Date
GB762106A true GB762106A (en) 1956-11-21

Family

ID=61021422

Family Applications (6)

Application Number Title Priority Date Filing Date
GB8391/53A Expired GB742070A (en) 1953-03-26 1953-03-26 Improvements in or relating to magnet assemblies which are long compared to their cross-sectional dimensions
GB28268/53A Expired GB762106A (en) 1953-03-20 1953-10-14 Improvements in or relating to travelling wave tubes
GB25850/55A Expired GB787603A (en) 1953-03-26 1955-09-09 Coupling arrangement for travelling wave tubes
GB16429/56A Expired GB799236A (en) 1953-03-26 1956-05-28 Improvements in or relating to electron discharge devices
GB713/57A Expired GB836219A (en) 1953-03-26 1957-01-08 Improvements in or relating to travelling wave tubes
GB1147/57A Expired GB831514A (en) 1953-03-26 1957-01-11 Improvements in or relating to travelling wave tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8391/53A Expired GB742070A (en) 1953-03-26 1953-03-26 Improvements in or relating to magnet assemblies which are long compared to their cross-sectional dimensions

Family Applications After (4)

Application Number Title Priority Date Filing Date
GB25850/55A Expired GB787603A (en) 1953-03-26 1955-09-09 Coupling arrangement for travelling wave tubes
GB16429/56A Expired GB799236A (en) 1953-03-26 1956-05-28 Improvements in or relating to electron discharge devices
GB713/57A Expired GB836219A (en) 1953-03-26 1957-01-08 Improvements in or relating to travelling wave tubes
GB1147/57A Expired GB831514A (en) 1953-03-26 1957-01-11 Improvements in or relating to travelling wave tubes

Country Status (7)

Country Link
US (5) US2890370A (en)
BE (7) BE527620A (en)
CH (5) CH322461A (en)
DE (4) DE1099093B (en)
FR (13) FR66226E (en)
GB (6) GB742070A (en)
NL (4) NL230187A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027484A (en) * 1958-03-29 1962-03-27 Kobe Kogyo Kabushiki Kaisha Periodic magnetic focussing system for travelling wave tubes

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2654952A (en) * 1951-03-01 1953-10-13 Philip O Solon Ellipsograph
US2940020A (en) * 1952-04-08 1960-06-07 Int Standard Electric Corp Focusing magnet for long electron beams
DE1232532B (en) * 1956-07-11 1967-01-19 W App Nfabriek N V As Pressure regulator for fuel gases
DE1276217B (en) * 1958-06-25 1968-08-29 Siemens Ag Electron beam tubes with speed modulation, especially running field tubes
GB869714A (en) * 1958-12-17 1961-06-07 Mullard Ltd Travelling-wave tubes
US3062983A (en) * 1959-04-28 1962-11-06 Gen Electric High frequency energy interchange device
DE1090732B (en) * 1959-05-02 1960-10-13 Telefunken Gmbh Coaxial coupling device for a high frequency tube
US3032677A (en) * 1959-05-08 1962-05-01 Raytheon Co Traveling wave tubes
DE1136425B (en) * 1959-07-17 1962-09-13 Philips Nv Arrangement for coupling the helical delay line of a field pipe to a waveguide running transversely to the helical axis
IT699974A (en) * 1959-12-10
US3134925A (en) * 1960-09-12 1964-05-26 Westinghouse Electric Corp Magnetic structure for providing smooth uniform magnetic field distribution in traveling wave tubes
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DE1108336B (en) 1961-06-08
DE1099093B (en) 1961-02-09
BE527620A (en) 1900-01-01
CH334859A (en) 1958-12-15
GB799236A (en) 1958-08-06
FR66226E (en) 1956-06-05
NL230187A (en) 1900-01-01
FR67270E (en) 1958-02-19
GB742070A (en) 1955-12-21
FR68866E (en) 1958-06-11
GB836219A (en) 1960-06-01
CH351679A (en) 1961-01-31
BE541462A (en) 1900-01-01
BE539158A (en) 1900-01-01
FR73991E (en) 1960-10-31
FR67269E (en) 1958-02-19
US2908843A (en) 1959-10-13
NL200290A (en) 1900-01-01
BE541278A (en) 1900-01-01
FR73056E (en) 1960-09-22
US2918593A (en) 1959-12-22
FR66266E (en) 1956-06-28
CH328589A (en) 1958-03-15
DE1001360B (en) 1957-01-24
DE1109272B (en) 1961-06-22
FR73213E (en) 1960-09-23
FR72041E (en) 1960-03-21
BE529619A (en) 1900-01-01
CH322461A (en) 1957-06-15
FR70719E (en) 1959-07-10
NL200402A (en) 1900-01-01
NL191459A (en) 1900-01-01
GB831514A (en) 1960-03-30
FR66255E (en) 1956-06-28
FR69772E (en) 1958-12-30
US2871392A (en) 1959-01-27
BE532535A (en) 1900-01-01
US2824996A (en) 1958-02-25
BE570152A (en) 1900-01-01
CH336509A (en) 1959-02-28
US2890370A (en) 1959-06-09
GB787603A (en) 1957-12-11
FR69376E (en) 1958-11-06

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