GB745099A - Arrangement for magnetic concentration of an electron beam in a travelling wave tube - Google Patents
Arrangement for magnetic concentration of an electron beam in a travelling wave tubeInfo
- Publication number
- GB745099A GB745099A GB26450/53A GB2645053A GB745099A GB 745099 A GB745099 A GB 745099A GB 26450/53 A GB26450/53 A GB 26450/53A GB 2645053 A GB2645053 A GB 2645053A GB 745099 A GB745099 A GB 745099A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electron beam
- magnetic
- wave tube
- arrangement
- travelling
- 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
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
- H01J23/08—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
Landscapes
- 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)
- Magnetic Resonance Imaging Apparatus (AREA)
- Communication Cables (AREA)
- Details Of Aerials (AREA)
- Particle Accelerators (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
745,099. Travelling-wave tubes. STANDARD TELEPHONES & CABLES, Ltd. Sept. 25, 1953 [Nov. 7, 1952], No. 26450/53. Addition to 734,963. Drawings to Specification. Class 39 (1). In a travelling-wave tube having the magnetic focusing arrangement of the parent Specification in which a cylinder of ferromagnetic material of low permeability surrounds concentrically the electron beam and is immediately surrounded by a magnetic coil to provide a homogeneous magnetic field, the helix is made of low permeability magnetic material in order to rectify residual misalignment of the field along the beam axis without substantially shielding the beam from the field. The cylinder may be of compressed powdered iron as in the parent Specification, and the helix may be composed of nickel-manganese wire.
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)
Publication Number | Publication Date |
---|---|
GB745099A true GB745099A (en) | 1956-02-22 |
Family
ID=31982865
Family Applications (20)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8525/53A Expired GB766790A (en) | 1952-04-08 | 1953-03-27 | Improvements in or relating to travelling wave apparatus |
GB8526/53A Expired GB734963A (en) | 1952-04-08 | 1953-03-27 | Arrangement for magnetic concentration of an electron beam in a travelling wave tube |
GB21854/53A Expired GB740852A (en) | 1952-04-08 | 1953-08-07 | Means and method of supporting helical conductors |
GB22494/53A Expired GB773783A (en) | 1952-04-08 | 1953-08-14 | Travelling wave electron discharge devices |
GB22491/53A Expired GB773393A (en) | 1952-04-08 | 1953-08-14 | R-f coupling arrangements for travelling wave tubes |
GB22493/53A Expired GB778846A (en) | 1952-04-08 | 1953-08-14 | Travelling wave tubes |
GB24540/53A Expired GB776923A (en) | 1952-04-08 | 1953-09-04 | Travelling wave electron discharge devices |
GB25817/53A Expired GB777224A (en) | 1952-04-08 | 1953-09-18 | Travelling wave electron discharge devices |
GB26447/53A Expired GB777225A (en) | 1952-04-08 | 1953-09-25 | Travelling wave electron discharge devices |
GB26450/53A Expired GB745099A (en) | 1952-04-08 | 1953-09-25 | Arrangement for magnetic concentration of an electron beam in a travelling wave tube |
GB27869/53A Expired GB756370A (en) | 1952-04-08 | 1953-10-09 | Travelling wave electron discharge devices |
GB29510/53A Expired GB773394A (en) | 1952-04-08 | 1953-10-26 | Magnet arrangements for travelling wave tubes |
GB8924/54A Expired GB754861A (en) | 1952-04-08 | 1954-03-26 | Arrangements for coupling a coaxial transmission line to a helix slow wave structure |
GB10495/54A Expired GB780806A (en) | 1952-04-08 | 1954-04-09 | Improvements in or relating to the provision of localised attenuation in travelling wave tubes |
GB10496/54A Expired GB754563A (en) | 1952-04-08 | 1954-04-09 | Arrangement for magnetic concentration of an electron beam in a travelling wave tube |
GB33565/54A Expired GB771189A (en) | 1952-04-08 | 1954-11-19 | Travelling wave tube |
GB8858/55A Expired GB767078A (en) | 1952-04-08 | 1955-03-25 | Travelling wave tube |
GB5891/56A Expired GB810267A (en) | 1952-04-08 | 1956-02-24 | Focusing magnet for long electron beams |
GB33384/57A Expired GB861229A (en) | 1952-04-08 | 1957-10-25 | Radio frequency impedance matching section |
GB14052/58A Expired GB886318A (en) | 1952-04-08 | 1958-05-02 | Travelling wave electron discharge device |
Family Applications Before (9)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8525/53A Expired GB766790A (en) | 1952-04-08 | 1953-03-27 | Improvements in or relating to travelling wave apparatus |
GB8526/53A Expired GB734963A (en) | 1952-04-08 | 1953-03-27 | Arrangement for magnetic concentration of an electron beam in a travelling wave tube |
GB21854/53A Expired GB740852A (en) | 1952-04-08 | 1953-08-07 | Means and method of supporting helical conductors |
GB22494/53A Expired GB773783A (en) | 1952-04-08 | 1953-08-14 | Travelling wave electron discharge devices |
GB22491/53A Expired GB773393A (en) | 1952-04-08 | 1953-08-14 | R-f coupling arrangements for travelling wave tubes |
GB22493/53A Expired GB778846A (en) | 1952-04-08 | 1953-08-14 | Travelling wave tubes |
GB24540/53A Expired GB776923A (en) | 1952-04-08 | 1953-09-04 | Travelling wave electron discharge devices |
GB25817/53A Expired GB777224A (en) | 1952-04-08 | 1953-09-18 | Travelling wave electron discharge devices |
GB26447/53A Expired GB777225A (en) | 1952-04-08 | 1953-09-25 | Travelling wave electron discharge devices |
Family Applications After (10)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27869/53A Expired GB756370A (en) | 1952-04-08 | 1953-10-09 | Travelling wave electron discharge devices |
GB29510/53A Expired GB773394A (en) | 1952-04-08 | 1953-10-26 | Magnet arrangements for travelling wave tubes |
GB8924/54A Expired GB754861A (en) | 1952-04-08 | 1954-03-26 | Arrangements for coupling a coaxial transmission line to a helix slow wave structure |
GB10495/54A Expired GB780806A (en) | 1952-04-08 | 1954-04-09 | Improvements in or relating to the provision of localised attenuation in travelling wave tubes |
GB10496/54A Expired GB754563A (en) | 1952-04-08 | 1954-04-09 | Arrangement for magnetic concentration of an electron beam in a travelling wave tube |
GB33565/54A Expired GB771189A (en) | 1952-04-08 | 1954-11-19 | Travelling wave tube |
GB8858/55A Expired GB767078A (en) | 1952-04-08 | 1955-03-25 | Travelling wave tube |
GB5891/56A Expired GB810267A (en) | 1952-04-08 | 1956-02-24 | Focusing magnet for long electron beams |
GB33384/57A Expired GB861229A (en) | 1952-04-08 | 1957-10-25 | Radio frequency impedance matching section |
GB14052/58A Expired GB886318A (en) | 1952-04-08 | 1958-05-02 | Travelling wave electron discharge device |
Country Status (7)
Country | Link |
---|---|
US (4) | US2843789A (en) |
BE (15) | BE528213A (en) |
CH (8) | CH316934A (en) |
DE (2) | DE963704C (en) |
FR (18) | FR65473E (en) |
GB (20) | GB766790A (en) |
NL (3) | NL196187A (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
NL239266A (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 |
US3404306A (en) * | 1966-04-06 | 1968-10-01 | Alltronics Inc | Traveling-wave tube focusing field straightener |
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 |
FR1522411A (en) * | 1967-03-14 | 1968-04-26 | Csf | Compensation for the effects of temperature in magnetic focusers |
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 | ||
WO1987004864A1 (en) * | 1986-02-08 | 1987-08-13 | Teldix Gmbh | Waveguide 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. |
GB9418028D0 (en) * | 1994-09-07 | 1994-10-26 | Eev Ltd | Cavity arrangements |
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 |
CN112692542B (en) * | 2020-12-31 | 2023-03-17 | 山东微波电真空技术有限公司 | Automatic assembly equipment for spiral line, clamping rod and pipe shell |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2064469A (en) * | 1933-10-23 | 1936-12-15 | Rca Corp | Device for and method of controlling high frequency currents |
US2131192A (en) * | 1934-05-09 | 1938-09-27 | Loewe Opta Gmbh | High vacuum television tube |
GB515308A (en) * | 1938-05-25 | 1939-12-01 | Miller Harold | Improvements in or relating to magnetic electron lenses |
BE436805A (en) * | 1938-10-26 | |||
USRE22389E (en) * | 1940-07-13 | 1943-11-02 | Electron beam concentrating | |
US2413609A (en) * | 1945-03-12 | 1946-12-31 | Hazeltine Research Inc | Time-delay network |
NL187376B (en) * | 1946-01-11 | Northern Telecom Ltd | TELEPHONE VOICE NETWORK. | |
NL135247C (en) * | 1946-10-22 | |||
NL74575C (en) * | 1946-10-23 | |||
US2611101A (en) * | 1947-04-15 | 1952-09-16 | Wallauschek Richard | Traeling wave amplifier tube |
US2679019A (en) * | 1947-12-02 | 1954-05-18 | Rca Corp | High-frequency electron discharge device |
US2660690A (en) * | 1948-10-15 | 1953-11-24 | Sylvania Electric Prod | Traveling wave tube |
US2730647A (en) * | 1949-06-22 | 1956-01-10 | Bell Telephone Labor Inc | Microwave amplifier |
US2585582A (en) * | 1949-07-07 | 1952-02-12 | Bell Telephone Labor Inc | Electron gun |
GB696058A (en) * | 1949-07-15 | 1953-08-26 | Nat Res Dev | Improvements in electron discharge tubes |
FR1012374A (en) * | 1949-07-27 | 1952-07-09 | Improvements in the construction of traveling wave electron tubes | |
GB664663A (en) * | 1949-09-01 | 1952-01-09 | Mullard Radio Valve Co Ltd | Improvements in travelling wave tubes |
US2649578A (en) * | 1949-12-02 | 1953-08-18 | Bell Telephone Labor Inc | Wave-guide elbow |
US2749472A (en) * | 1952-01-02 | 1956-06-05 | Univ Leland Stanford Junior | Travelling wave tubes |
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0
- NL NL95555D patent/NL95555C/xx active
- BE BE523117D patent/BE523117A/xx unknown
- BE BE545710D patent/BE545710A/xx unknown
- BE BE523897D patent/BE523897A/xx unknown
- BE BE524061D patent/BE524061A/xx unknown
- BE BE523116D patent/BE523116A/xx unknown
- BE BE521167D patent/BE521167A/xx unknown
- BE BE527787D patent/BE527787A/xx unknown
- BE BE534531D patent/BE534531A/xx unknown
- BE BE522186D patent/BE522186A/xx unknown
- NL NL98392D patent/NL98392C/xx active
- BE BE523425D patent/BE523425A/xx unknown
- NL NL196187D patent/NL196187A/xx unknown
- BE BE522303D patent/BE522303A/xx unknown
- BE BE519037D patent/BE519037A/xx unknown
- BE BE524397D patent/BE524397A/xx unknown
- BE BE523177D patent/BE523177A/xx unknown
- BE BE528213D patent/BE528213A/xx unknown
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1953
- 1953-03-27 GB GB8525/53A patent/GB766790A/en not_active Expired
- 1953-03-27 GB GB8526/53A patent/GB734963A/en not_active Expired
- 1953-04-07 CH CH316934D patent/CH316934A/en unknown
- 1953-07-03 FR FR65473D patent/FR65473E/en not_active Expired
- 1953-07-06 US US366288A patent/US2843789A/en not_active Expired - Lifetime
- 1953-08-07 GB GB21854/53A patent/GB740852A/en not_active Expired
- 1953-08-14 GB GB22494/53A patent/GB773783A/en not_active Expired
- 1953-08-14 FR FR65589D patent/FR65589E/en not_active Expired
- 1953-08-14 GB GB22491/53A patent/GB773393A/en not_active Expired
- 1953-08-14 GB GB22493/53A patent/GB778846A/en not_active Expired
- 1953-08-14 FR FR65591D patent/FR65591E/en not_active Expired
- 1953-08-22 CH CH317676D patent/CH317676A/en unknown
- 1953-09-04 GB GB24540/53A patent/GB776923A/en not_active Expired
- 1953-09-18 GB GB25817/53A patent/GB777224A/en not_active Expired
- 1953-09-25 GB GB26447/53A patent/GB777225A/en not_active Expired
- 1953-09-25 GB GB26450/53A patent/GB745099A/en not_active Expired
- 1953-09-27 DE DEI7740A patent/DE963704C/en not_active Expired
- 1953-09-29 CH CH335353D patent/CH335353A/en unknown
- 1953-09-29 FR FR65607D patent/FR65607E/en not_active Expired
- 1953-09-29 FR FR65606D patent/FR65606E/en not_active Expired
- 1953-10-09 FR FR65608D patent/FR65608E/en not_active Expired
- 1953-10-09 GB GB27869/53A patent/GB756370A/en not_active Expired
- 1953-10-26 GB GB29510/53A patent/GB773394A/en not_active Expired
- 1953-10-28 FR FR65616D patent/FR65616E/en not_active Expired
- 1953-10-29 DE DEI7847A patent/DE1080702B/en active Pending
- 1953-10-31 CH CH330643D patent/CH330643A/en unknown
- 1953-11-06 US US390688A patent/US2812469A/en not_active Expired - Lifetime
- 1953-11-19 CH CH329897D patent/CH329897A/en unknown
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1954
- 1954-03-05 CH CH322499D patent/CH322499A/en unknown
- 1954-03-26 GB GB8924/54A patent/GB754861A/en not_active Expired
- 1954-03-31 FR FR66228D patent/FR66228E/en not_active Expired
- 1954-04-01 CH CH334111D patent/CH334111A/en unknown
- 1954-04-08 FR FR66230D patent/FR66230E/en not_active Expired
- 1954-04-09 GB GB10495/54A patent/GB780806A/en not_active Expired
- 1954-04-09 GB GB10496/54A patent/GB754563A/en not_active Expired
- 1954-04-14 US US423076A patent/US2911599A/en not_active Expired - Lifetime
- 1954-04-14 FR FR66233D patent/FR66233E/en not_active Expired
- 1954-04-16 FR FR66421D patent/FR66421E/en not_active Expired
- 1954-06-30 FR FR68403D patent/FR68403E/en not_active Expired
- 1954-07-13 FR FR68404D patent/FR68404E/en not_active Expired
- 1954-09-03 FR FR68407D patent/FR68407E/en not_active Expired
- 1954-11-19 GB GB33565/54A patent/GB771189A/en not_active Expired
- 1954-11-26 FR FR68804D patent/FR68804E/en not_active Expired
- 1954-12-10 CH CH333699D patent/CH333699A/en unknown
- 1954-12-30 FR FR68807D patent/FR68807E/en not_active Expired
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1955
- 1955-02-03 FR FR69062D patent/FR69062E/en not_active Expired
- 1955-03-25 GB GB8858/55A patent/GB767078A/en not_active Expired
- 1955-04-02 FR FR69068D patent/FR69068E/en not_active Expired
- 1955-04-04 US US499163A patent/US2857547A/en not_active Expired - Lifetime
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1956
- 1956-02-24 GB GB5891/56A patent/GB810267A/en not_active Expired
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1957
- 1957-10-25 GB GB33384/57A patent/GB861229A/en not_active Expired
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1958
- 1958-05-02 GB GB14052/58A patent/GB886318A/en not_active Expired
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