US2812469A - Travelling wave tube arrangement - Google Patents

Travelling wave tube arrangement Download PDF

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US2812469A
US2812469A US390688A US39068853A US2812469A US 2812469 A US2812469 A US 2812469A US 390688 A US390688 A US 390688A US 39068853 A US39068853 A US 39068853A US 2812469 A US2812469 A US 2812469A
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helix
travelling wave
magnetic
wave tube
tube
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US390688A
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Klein Werner
Friz Walter
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International Standard Electric Corp
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International Standard Electric Corp
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
    • B05D3/141—Plasma treatment
    • B05D3/142—Pretreatment
    • B05D3/144—Pretreatment of polymeric substrates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
    • C08G81/02—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C08G81/021—Block or graft polymers containing only sequences of polymers of C08C or C08F
    • C08G81/022—Block or graft polymers containing only sequences of polymers of C08C or C08F containing sequences of polymers of conjugated dienes and of polymers of alkenyl aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • 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
    • H01J23/16—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
    • 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
    • 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
    • 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
    • H01J23/48—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit for linking interaction circuit with coaxial lines; Devices of the coupled helices type
    • H01J23/50—Coupling devices having distributed capacitance and inductance, structurally associated with the tube, for introducing or removing wave energy to or from the interaction circuit for linking interaction circuit with coaxial lines; Devices of the coupled helices type the interaction circuit being a helix or derived from a helix
    • 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
    • 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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges
    • H04M5/04—Arrangements for indicating calls or supervising connections for calling or clearing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08J2327/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer

Definitions

  • This invention relates to travelling wave tubes using a helix and particularly to a magnetic beam focusing arrangement therefor.
  • Magnetic elds have been widely used in travelling wave tubes for concentrating the electron beam.
  • One of the problems in such tubes has been the maintenance of a uniform field and the elimination or reduction of small spurious components of the field which introduce undesired effects in the operation of the tube.
  • In dealing with certain of these spurious components there has been described in our U. S. application 366,288, filed July 6, 1953, for Arrangement for Magnetic Beam Concentration a means for reducing the spurious components by introducing a cylindrical mantle of paramagnetic material of low permeability.
  • the present application is concerned with another means for reducing certain of these spurious components.
  • the helix of the travelling wave tube is made of slightly magnetic material whose permeability has a maximum value suitable to the applied magnetic field to produce the desired concentration of the beam.
  • the helix thereby also acts as a magnetic shunt so that since the helix partially extends into the wave guides that effect coupling-in and coupling-out, this produces several advantages.
  • the gure which shows a travelling wave tube 1 having a helix 2 for the concentration of the beam therein, there is provided around the magnetic coils an external mantle 5 of compressed powdered iron about 230 mm. long.
  • the helix 2 is made of nickel manganese wire with 96% nickel and 4% manganese, 0.4 mm. in diameter of the wire, with the helix diameter of 2 mm. and a pitch of 1.7 turns per mm.
  • the usual focusing coil is shown at 6.
  • the helix 2 partly extends into the hollow wave guides 3 and 4.
  • the intensity of the magnetic focusing field amounts to ⁇ approximately 300 gauss in the axis of the helix. Compared with the non-magnetic helix, only a slight increase of liux is required. However, the susceptibility of the tube to orientation as to position with respect to the magnetic field is substantially decreased. With the beam current of 3 mm. a beam transmission of about 97% has been measured.
  • One advantage produced by having the slightly magnetic helix extend partially into the hollow wave guide is that large wave guide cross sections may be employed while still obtaining good beam concentration.
  • a travelling wave tube having means for producing an electron beam including means for focusing said beam, a wave transmission path extending substantially parallel to said beam for interaction between the wave and the beam comprising a helix of magnetic material consisting of a vnickel-manganese alloy of at least nickel.
  • a travelling wave tube having means for producing an electron beam including means for focusing said beam, a wave transmission path extending substantially parallel to said beam for interaction between the wave and the beam comprising a helix of magnetic material consisting of a manganese-nickel alloy of at least 90% nickel, said means for focusing said beam comprising magnetic coils arranged around said tube and a shield 0f paramagnetic material interposed between said coils and said tube.
  • a construction wherein said coil is of an alloy consisting of substantially 4% manganese and 96% nickel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Signal Processing (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Microwave Tubes (AREA)
  • Waveguides (AREA)
  • Communication Cables (AREA)
  • Details Of Aerials (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Particle Accelerators (AREA)

Description

' NOV 5,- 1957 w. KLEIN ETAL 2,812,469
TRAVELLING WAVE TUBE .ARRANGEMENT Filed NOV. 6, 1953 United States Patent O TRAVELLING WAVE TUBE ARRANGEMENT Werner Klein, Stuttgart-Korntal, and Walter Friz, Stuttgart, Germany, assignors to International Standard Electric Corporation, New York, N. Y., a corporation of Delaware Application November 6, 1953, Serial No. 390,688
Claims priority, application Germany November 7, 1952 3 Claims. (Cl. S15-3.5)
This invention relates to travelling wave tubes using a helix and particularly to a magnetic beam focusing arrangement therefor.
Magnetic elds have been widely used in travelling wave tubes for concentrating the electron beam. One of the problems in such tubes has been the maintenance of a uniform field and the elimination or reduction of small spurious components of the field which introduce undesired effects in the operation of the tube. In dealing with certain of these spurious components there has been described in our U. S. application 366,288, filed July 6, 1953, for Arrangement for Magnetic Beam Concentration a means for reducing the spurious components by introducing a cylindrical mantle of paramagnetic material of low permeability.
The present application is concerned with another means for reducing certain of these spurious components. In accordance with a main feature of the present invention, the helix of the travelling wave tube is made of slightly magnetic material whose permeability has a maximum value suitable to the applied magnetic field to produce the desired concentration of the beam. The helix thereby also acts as a magnetic shunt so that since the helix partially extends into the wave guides that effect coupling-in and coupling-out, this produces several advantages. While in a tube with the helix of nonmagnetic material the helix axis must coincide very accurately with the eld direction of the focusing eld, a slightly magnetic helix will align the lield inside thereof parallel to the helix axis even in the case of slight deviations of the field direction with respect to the helix axis. Thus the tube with the slightly magnetic helix is no longer sensitive to direction of the eld to the same extent. Furthermore high permeability of the magnetic material of the helix would require an excessive external field in order to obtain the required useful field intensity in the axis of the helix. If the concentration lield is too weak then the magnetic helix acts like a magnetic shield so that no further beam concentration is obtainable. This is the reason why slightly magnetic helices must be used.
The above-mentioned and other features and objects of this invention and the manner of attaining them will become more apparent and the invention itself will be best understood, by reference to the following description of an embodiment of the invention taken in conjunction with the accompanying drawing in which the ligure is a schematic longitudinal sectional view of a travelling wave tube.
ICC
Referring now to the gure which shows a travelling wave tube 1 having a helix 2 for the concentration of the beam therein, there is provided around the magnetic coils an external mantle 5 of compressed powdered iron about 230 mm. long. The helix 2 is made of nickel manganese wire with 96% nickel and 4% manganese, 0.4 mm. in diameter of the wire, with the helix diameter of 2 mm. and a pitch of 1.7 turns per mm. The usual focusing coil is shown at 6.
The helix 2 partly extends into the hollow wave guides 3 and 4. The intensity of the magnetic focusing field amounts to `approximately 300 gauss in the axis of the helix. Compared with the non-magnetic helix, only a slight increase of liux is required. However, the susceptibility of the tube to orientation as to position with respect to the magnetic field is substantially decreased. With the beam current of 3 mm. a beam transmission of about 97% has been measured.
While we have shown the tube used with a mantle, it may be dispensed with. However, the combination of the slightly magnetic helix with the low permeability mantle together serve to produce a vastly improved operation.
One advantage produced by having the slightly magnetic helix extend partially into the hollow wave guide is that large wave guide cross sections may be employed while still obtaining good beam concentration.
While we have described above the principles of our invention in connection with specific apparatus, it is to be clearly understood that this description is made only by way of example and not as a limitation to the scope of our invention as set forth in the objects thereof and in the accompanying claims.
We claim:
1. In a travelling wave tube having means for producing an electron beam including means for focusing said beam, a wave transmission path extending substantially parallel to said beam for interaction between the wave and the beam comprising a helix of magnetic material consisting of a vnickel-manganese alloy of at least nickel.
2. In a travelling wave tube having means for producing an electron beam including means for focusing said beam, a wave transmission path extending substantially parallel to said beam for interaction between the wave and the beam comprising a helix of magnetic material consisting of a manganese-nickel alloy of at least 90% nickel, said means for focusing said beam comprising magnetic coils arranged around said tube and a shield 0f paramagnetic material interposed between said coils and said tube.
3. In a travelling wave tube according to claim l, a construction wherein said coil is of an alloy consisting of substantially 4% manganese and 96% nickel.
References Cited in the le of this patent UNITED STATES PATENTS 2,064,469 Haei Dec. 15, 1936 2,131,192 Schlesinger Sept. 27, 1938 2,233,194 Atlee et al Feb. 25, 1941 2,602,148 Pierce July 1, 1952

Claims (1)

1.IN A TRAVELLING WAVE TUBE HAVING MEANS FOR PRODUCING AN ELECTRON BEAM INCLUDING MEANS FOR FOCUSING SAID BEAM, A WAVE TRANSMISSION PATH EXENDING SUBSTANTIALLY PARALLEL TO SAID BEAM FOR INTERACTION BETWEEN THE WAVE AND THE BEAM COMRISING A HELIX OF MAGNETIC MATERIAL CONSISTING OF A NICKEL-MANGANESE ALLOY OF AT LEAST 90% NICKEL.
US390688A 1952-04-08 1953-11-06 Travelling wave tube arrangement Expired - Lifetime US2812469A (en)

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
US776923XA 1952-04-08 1952-04-08
DE316934X 1952-04-08
DE734963X 1952-07-05
US740852XA 1952-08-19 1952-08-19
US778846XA 1952-08-19 1952-08-19
US773393XA 1952-08-21 1952-08-21
US773783XA 1952-08-23 1952-08-23
US777224XA 1952-09-29 1952-09-29
US777225XA 1952-10-11 1952-10-11
US773394XA 1952-10-31 1952-10-31
DE745099X 1952-11-07
US756370XA 1952-11-19 1952-11-19
US754861XA 1953-04-01 1953-04-01
DE780806X 1953-04-18
DE771189X 1953-11-27
DE767078X 1954-04-03
US861229XA 1956-10-26 1956-10-26
US886318XA 1957-05-03 1957-05-03

Publications (1)

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US2812469A true US2812469A (en) 1957-11-05

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Family Applications (4)

Application Number Title Priority Date Filing Date
US366288A Expired - Lifetime US2843789A (en) 1952-04-08 1953-07-06 Arrangement for magnetic beam concentration
US390688A Expired - Lifetime US2812469A (en) 1952-04-08 1953-11-06 Travelling wave tube arrangement
US423076A Expired - Lifetime US2911599A (en) 1952-04-08 1954-04-14 Attenuation for traveling-wave tubes
US499163A Expired - Lifetime US2857547A (en) 1952-04-08 1955-04-04 Traveling wave tube

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US366288A Expired - Lifetime US2843789A (en) 1952-04-08 1953-07-06 Arrangement for magnetic beam concentration

Family Applications After (2)

Application Number Title Priority Date Filing Date
US423076A Expired - Lifetime US2911599A (en) 1952-04-08 1954-04-14 Attenuation for traveling-wave tubes
US499163A Expired - Lifetime US2857547A (en) 1952-04-08 1955-04-04 Traveling wave tube

Country Status (7)

Country Link
US (4) US2843789A (en)
BE (15) BE527787A (en)
CH (8) CH316934A (en)
DE (2) DE963704C (en)
FR (18) FR65473E (en)
GB (20) GB766790A (en)
NL (3) NL95555C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3404306A (en) * 1966-04-06 1968-10-01 Alltronics Inc Traveling-wave tube focusing field straightener
US3509504A (en) * 1967-03-14 1970-04-28 Csf Magnetic focusing system
EP0701266A3 (en) * 1994-09-07 1998-04-01 Eev Limited Cavity arrangements
CN112692542A (en) * 2020-12-31 2021-04-23 山东微波电真空技术有限公司 Automatic assembly equipment for spiral line, clamping rod and pipe shell

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US3136964A (en) * 1954-05-12 1964-06-09 High Voltage Engineering Corp Radio frequency coupler and attenuator
NL105096C (en) * 1954-08-05
US2925508A (en) * 1955-07-28 1960-02-16 Sperry Rand Corp Electron beam focusing structure
US2991391A (en) * 1957-07-24 1961-07-04 Varian Associates Electron beam discharge apparatus
US2966609A (en) * 1957-11-22 1960-12-27 Gen Electric Magnetic structures for high frequency energy interchange apparatus
NL105112C (en) * 1958-05-15
US3133227A (en) * 1958-06-25 1964-05-12 Varian Associates Linear particle accelerator apparatus for high energy particle beams provided with pulsing means for the control electrode
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
US3250946A (en) * 1961-02-07 1966-05-10 Philips Corp Travelling wave tube, in which an electron beam interacts with a helical delay line, having spurious oscillation suppressing means
US3274429A (en) * 1963-03-18 1966-09-20 Varian Associates High frequency electron discharge device with heat dissipation means
US3269611A (en) * 1964-02-04 1966-08-30 Komarek Greaves And Company Feeding mechanism
DE1541040B1 (en) * 1966-05-16 1971-08-26 Siemens Ag WALKING FIELD TUBE WITH TWO HIGH FREQUENCY INPUT AND OUTSIDE WAVE GUIDES FORMING THE TUBE
US3466493A (en) * 1967-02-21 1969-09-09 Varian Associates Circuit sever for ppm focused traveling wave tubes
GB1189615A (en) * 1968-03-21 1970-04-29 English Electric Valve Co Ltd Improvements in or relating to Travelling Wave Tubes.
US3544832A (en) * 1968-07-18 1970-12-01 Rca Corp Traveling wave tube with evaporated nickel attenuator coating and method of manufacture thereof
FR2137311B1 (en) * 1971-05-18 1973-05-11 Thomson Csf
JPS5580851U (en) * 1978-11-29 1980-06-04
DE3763981D1 (en) * 1986-02-08 1990-08-30 Teldix Gmbh SEMICONDUCTOR SWITCH.
US4945320A (en) * 1986-02-18 1990-07-31 Teldix Gmbh Microwave switch having at least two switching positions
FR2711277B1 (en) * 1993-10-14 1995-11-10 Alcatel Mobile Comm France Antenna of the type for portable radio device, method of manufacturing such an antenna and portable radio device comprising such an antenna.
GB2296370B (en) * 1994-12-19 1998-07-29 Eev Ltd Travelling wave tubes
US5596797A (en) * 1995-04-03 1997-01-28 D & M Plastics Corporation Method and apparatus for making a molded cellular antenna coil
KR20190046029A (en) * 2017-10-25 2019-05-07 삼성전기주식회사 Antenna device and portable terminal including the same

Citations (4)

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US3509504A (en) * 1967-03-14 1970-04-28 Csf Magnetic focusing system
EP0701266A3 (en) * 1994-09-07 1998-04-01 Eev Limited Cavity arrangements
CN112692542A (en) * 2020-12-31 2021-04-23 山东微波电真空技术有限公司 Automatic assembly equipment for spiral line, clamping rod and pipe shell

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BE528213A (en) 1900-01-01
GB767078A (en) 1957-01-30
FR65589E (en) 1956-02-28
FR69068E (en) 1958-09-22
FR66228E (en) 1956-06-05
BE523117A (en) 1900-01-01
FR68403E (en) 1958-04-30
BE534531A (en) 1900-01-01
FR66233E (en) 1956-06-05
GB754563A (en) 1956-08-08
GB740852A (en) 1955-11-23
CH322499A (en) 1957-06-15
US2843789A (en) 1958-07-15
FR69062E (en) 1958-09-22
GB778846A (en) 1957-07-10
CH317676A (en) 1956-11-30
CH333699A (en) 1958-10-31
BE519037A (en) 1900-01-01
FR65608E (en) 1956-02-29
GB745099A (en) 1956-02-22
FR68807E (en) 1958-06-10
FR68407E (en) 1958-04-30
BE523177A (en) 1900-01-01
GB861229A (en) 1961-02-15
CH330643A (en) 1958-06-15
BE524397A (en) 1900-01-01
FR65606E (en) 1956-02-29
FR65473E (en) 1956-02-21
GB766790A (en) 1957-01-23
NL196187A (en) 1900-01-01
FR65591E (en) 1956-02-28
FR68804E (en) 1958-06-10
CH334111A (en) 1958-11-15
DE963704C (en) 1957-05-09
GB777224A (en) 1957-06-19
GB773394A (en) 1957-04-24
GB773783A (en) 1957-05-01
GB886318A (en) 1962-01-03
BE523425A (en) 1900-01-01
FR65607E (en) 1956-02-29
BE527787A (en) 1900-01-01
GB754861A (en) 1956-08-15
BE545710A (en) 1900-01-01
US2911599A (en) 1959-11-03
NL98392C (en) 1900-01-01
US2857547A (en) 1958-10-21
GB777225A (en) 1957-06-19
FR65616E (en) 1956-02-29
GB810267A (en) 1959-03-11
BE522303A (en) 1900-01-01
FR66230E (en) 1956-06-05
CH335353A (en) 1958-12-31
BE522186A (en) 1900-01-01
CH329897A (en) 1958-05-15
BE524061A (en) 1900-01-01
GB773393A (en) 1957-04-24
CH316934A (en) 1956-10-31
GB771189A (en) 1957-03-27
GB756370A (en) 1956-09-05
BE523116A (en) 1900-01-01
FR68404E (en) 1958-04-30
GB780806A (en) 1957-08-07
NL95555C (en) 1900-01-01
GB734963A (en) 1955-08-10
DE1080702B (en) 1960-04-28
BE521167A (en) 1900-01-01
FR66421E (en) 1957-02-27
BE523897A (en) 1900-01-01
GB776923A (en) 1957-06-12

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